remove error-causing type check

.github/workflows/codeql-analysis.yml

@@ -13,7 +13,10 @@ name: "CodeQL"
 
 on:
   push:
+    branches: [ master ]
   pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
   schedule:
     - cron: '30 2 * * 3'
 
@@ -30,6 +33,9 @@ jobs:
       fail-fast: false
       matrix:
         language: [ 'python' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
     - name: Checkout repository

.github/workflows/github-ci-legacy.yml

@@ -1,34 +0,0 @@
-name: Github CI Unit Testing for Legacy Environments
-
-on:
-  push:
-  pull_request:
-  workflow_dispatch:
-
-jobs:
-  build:
-    runs-on: ${{ matrix.os }}
-    continue-on-error: true
-    strategy:
-      matrix:
-        os: [ubuntu-18.04, macos-10.15, windows-2019]
-        python-version: [2.7, 3.5, 3.6]
-    steps:
-      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
-
-      # configure python
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      # install deps
-      - name: Install dependencies for ${{ matrix.os }} Python ${{ matrix.python-version }}
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install scipy
-
-      # find and run all unit tests
-      - name: Run unit tests
-        run: python -m unittest discover test

.github/workflows/github-ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2

.github/workflows/publish-on-pypi-test.yml

@@ -1,37 +0,0 @@
-name: Publish to TestPyPI
-
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  build-n-publish:
-    name: Build and publish to TestPyPI
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@master
-    - name: Set up Python 3
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3
-    - name: Install pypa/build
-      run: >-
-        python -m
-        pip install
-        build
-        --user
-    - name: Build a binary wheel and a source tarball
-      run: >-
-        python -m
-        build
-        --sdist
-        --wheel
-        --outdir dist/
-        .
-    - name: Publish to Test PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        skip_existing: true
-        password: ${{ secrets.TESTPYPI_API_TOKEN }}
-        repository_url: https://test.pypi.org/legacy/

.github/workflows/publish-on-pypi.yml

@@ -1,14 +1,12 @@
-name: Publish to PyPI if new version
+name: Publish to TestPyPI and if new version PyPI
 
 on:
   push:
-    tags:
-      - 'v*'
-
+    branches: [ master ]
 jobs:
   build-n-publish:
     name: Build and publish to TestPyPI and PyPI
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@master
     - name: Set up Python 3
@@ -30,13 +28,13 @@ jobs:
         --outdir dist/
         .
     - name: Publish to Test PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
+      uses: pypa/gh-action-pypi-publish@master
       with:
         skip_existing: true
         password: ${{ secrets.TESTPYPI_API_TOKEN }}
         repository_url: https://test.pypi.org/legacy/
     - name: Publish to PyPI
       if: startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@release/v1
+      uses: pypa/gh-action-pypi-publish@master
       with:
         password: ${{ secrets.PYPI_API_TOKEN }}

README.ipynb

@@ -4,10 +4,6 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "[![Donate](https://img.shields.io/badge/donate-paypal-brightgreen)](https://www.paypal.com/donate?business=4SKJ27AM4EYYA&no_recurring=0&item_name=Support+the+creator+of+svgpathtools?++He%27s+a+student+and+would+appreciate+it.&currency_code=USD)\n",
-    "![Python](https://img.shields.io/pypi/pyversions/svgpathtools.svg)\n",
-    "[![PyPI](https://img.shields.io/pypi/v/svgpathtools)](https://pypi.org/project/svgpathtools/)\n",
-    "[![PyPI - Downloads](https://img.shields.io/pypi/dm/svgpathtools?color=yellow)](https://pypistats.org/packages/svgpathtools)\n",
     "# svgpathtools\n",
     "\n",
     "svgpathtools is a collection of tools for manipulating and analyzing SVG Path objects and Bézier curves.\n",
@@ -40,15 +36,25 @@
     "## Prerequisites\n",
     "- **numpy**\n",
     "- **svgwrite**\n",
-    "- **scipy** (optional but recommended for performance)\n",
     "\n",
     "## Setup\n",
     "\n",
+    "If not already installed, you can **install the prerequisites** using  pip.\n",
+    "\n",
+    "```bash\n",
+    "$ pip install numpy\n",
+    "```\n",
+    "\n",
+    "```bash\n",
+    "$ pip install svgwrite\n",
+    "```\n",
+    "\n",
+    "Then **install svgpathtools**:\n",
     "```bash\n",
     "$ pip install svgpathtools\n",
     "```  \n",
     "  \n",
-    "### Alternative Setup\n",
+    "### Alternative Setup \n",
     "You can download the source from Github and install by using the command (from inside the folder containing setup.py):\n",
     "\n",
     "```bash\n",

README.md

@@ -1,6 +1,7 @@
 [![Donate](https://img.shields.io/badge/donate-paypal-brightgreen)](https://www.paypal.com/donate?business=4SKJ27AM4EYYA&no_recurring=0&item_name=Support+the+creator+of+svgpathtools?++He%27s+a+student+and+would+appreciate+it.&currency_code=USD)
 ![Python](https://img.shields.io/pypi/pyversions/svgpathtools.svg)
 [![PyPI](https://img.shields.io/pypi/v/svgpathtools)](https://pypi.org/project/svgpathtools/)
+![Build](https://img.shields.io/github/workflow/status/mathandy/svgpathtools/Github%20CI%20Unit%20Testing)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/svgpathtools?color=yellow)](https://pypistats.org/packages/svgpathtools)
 # svgpathtools
 
@@ -35,10 +36,20 @@ Some included tools:
 ## Prerequisites
 - **numpy**
 - **svgwrite**
-- **scipy** (optional, but recommended for performance)
 
 ## Setup
 
+If not already installed, you can **install the prerequisites** using  pip.
+
+```bash
+$ pip install numpy
+```
+
+```bash
+$ pip install svgwrite
+```
+
+Then **install svgpathtools**:
 ```bash
 $ pip install svgpathtools
 ```  

examples/compute-many-points-quickly-using-numpy-arrays.py

@@ -1,17 +1,23 @@
-"""The goal of this gist is to show how to compute many points on a path 
+""" An example of how to speed up point() calculations with vectorization.
+
+The goal of this gist is to show how to compute many points on a path
 quickly using NumPy arrays.  I.e. there's a much faster way than using, say
 [some_path.point(t) for t in many_tvals].  The example below assumes the 
 `Path` object is composed entirely of `CubicBezier` objects, but this can
 easily be generalized to paths containing `Line` and `QuadraticBezier` objects
 also.
+
 Note: The relevant matrix transformation for quadratics can be found in the
-svgpathtools.bezier module."""
+svgpathtools.bezier module.
+"""
+
 from __future__ import print_function
 import numpy as np
-from svgpathtools import bezier_point, Path, bpoints2bezier, polynomial2bezier
+from svgpathtools import bezier_point, bpoints2bezier, polynomial2bezier, Path
 
 
 class HigherOrderBezier:
+    """Bezier curve of arbitrary degree"""
     def __init__(self, bpoints):
         self.bpts = bpoints
 

examples/determine-if-svg-path-is-contained-in-other-path-example.py

@@ -7,8 +7,7 @@ Path.continuous_subpaths() method to split a paths into a list of its
 continuous subpaths.
 """
 
-from svgpathtools import Path, Line
-
+from svgpathtools import *
 
 def path1_is_contained_in_path2(path1, path2):
     assert path2.isclosed()  # This question isn't well-defined otherwise
@@ -17,11 +16,11 @@ def path1_is_contained_in_path2(path1, path2):
 
     # find a point that's definitely outside path2
     xmin, xmax, ymin, ymax = path2.bbox()
-    b = (xmin + 1) + 1j*(ymax + 1)
+    B = (xmin + 1) + 1j*(ymax + 1)
 
-    a = path1.start  # pick an arbitrary point in path1
-    ab_line = Path(Line(a, b))
-    number_of_intersections = len(ab_line.intersect(path2))
+    A = path1.start  # pick an arbitrary point in path1
+    AB_line = Path(Line(A, B))
+    number_of_intersections = len(AB_line.intersect(path2))
     if number_of_intersections % 2:  # if number of intersections is odd
         return True
     else:

examples/distance-between-two-svg-paths-example.py

@@ -1,16 +1,13 @@
-from svgpathtools import disvg, Line, CubicBezier
-from scipy.optimize import fminbound
+from svgpathtools import *
 
 # create some example paths
 path1 = CubicBezier(1,2+3j,3-5j,4+1j)
 path2 = path1.rotated(60).translated(3)
 
-
+# find minimizer
+from scipy.optimize import fminbound
 def dist(t):
 	return path1.radialrange(path2.point(t))[0][0]
-
-
-# find minimizer
 T2 = fminbound(dist, 0, 1)
 
 # Let's do a visual check

requirements.txt

@@ -1,3 +1,3 @@
 numpy
 svgwrite
-scipy
+defusedxml

setup.py

@@ -3,7 +3,7 @@ import codecs
 import os
 
 
-VERSION = '1.6.1'
+VERSION = '1.4.2'
 AUTHOR_NAME = 'Andy Port'
 AUTHOR_EMAIL = 'AndyAPort@gmail.com'
 GITHUB = 'https://github.com/mathandy/svgpathtools'
@@ -30,8 +30,9 @@ setup(name='svgpathtools',
       download_url='{}/releases/download/{}/svgpathtools-{}-py2.py3-none-any.whl'
                    ''.format(GITHUB, VERSION, VERSION),
       license='MIT',
-      install_requires=['numpy', 'svgwrite', 'scipy'],
+      install_requires=['numpy', 'svgwrite', 'defusedxml'],
       platforms="OS Independent",
+      requires=['numpy', 'svgwrite', 'defusedxml'],
       keywords=['svg', 'svg path', 'svg.path', 'bezier', 'parse svg path', 'display svg'],
       classifiers=[
             "Development Status :: 4 - Beta",
@@ -46,8 +47,6 @@ setup(name='svgpathtools',
             "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
-            "Programming Language :: Python :: 3.10",
-            "Programming Language :: Python :: 3.11",
             "Topic :: Multimedia :: Graphics :: Editors :: Vector-Based",
             "Topic :: Scientific/Engineering",
             "Topic :: Scientific/Engineering :: Image Recognition",

svgpathtools/__init__.py

@@ -17,6 +17,6 @@ from .document import (Document, CONVERSIONS, CONVERT_ONLY_PATHS,
 from .svg_io_sax import SaxDocument
 
 try:
-    from .svg_to_paths import svg2paths, svg2paths2, svgstr2paths
+    from .svg_to_paths import svg2paths, svg2paths2
 except ImportError:
     pass

svgpathtools/bezier.py

@@ -31,13 +31,9 @@ def bezier_point(p, t):
     Warning:  Be concerned about numerical stability when using this function
     with high order curves."""
 
-    # begin arc support block ########################
-    try:
-        p.large_arc
+    # for Arc support
+    if hasattr(p, 'radius'):
         return p.point(t)
-    except:
-        pass
-    # end arc support block ##########################
 
     deg = len(p) - 1
     if deg == 3:
@@ -145,14 +141,11 @@ def split_bezier(bpoints, t):
 
 
 def halve_bezier(p):
+    """split path segment into two halves at t=0.5"""
 
-    # begin arc support block ########################
-    try:
-        p.large_arc
+    # for Arc support
+    if hasattr(p, 'radius'):
         return p.split(0.5)
-    except:
-        pass
-    # end arc support block ##########################
 
     if len(p) == 4:
         return ([p[0], (p[0] + p[1])/2, (p[0] + 2*p[1] + p[2])/4,
@@ -199,13 +192,9 @@ def bezier_bounding_box(bez):
     (xmin, xmax, ymin, ymax).
     Warning: For the non-cubic case this is not particularly efficient."""
 
-    # begin arc support block ########################
-    try:
-        bla = bez.large_arc
-        return bez.bbox()  # added to support Arc objects
-    except:
-        pass
-    # end arc support block ##########################
+    # for Arc support
+    if hasattr(bez, 'radius'):
+        return bez.bbox()
 
     if len(bez) == 4:
         xmin, xmax = bezier_real_minmax([p.real for p in bez])

svgpathtools/document.py

@@ -13,7 +13,7 @@ An Historic Note:
 Example:
     Typical usage looks something like the following.
 
-        >> from svgpathtools import Document
+        >> from svgpathtools import *
         >> doc = Document('my_file.html')
         >> for path in doc.paths():
         >>     # Do something with the transformed Path object.
@@ -36,15 +36,18 @@ A Big Problem:
 # External dependencies
 from __future__ import division, absolute_import, print_function
 import os
+import sys
 import collections
-import xml.etree.ElementTree as etree
-from xml.etree.ElementTree import Element, SubElement, register_namespace
-from xml.dom.minidom import parseString
+from defusedxml.cElementTree import parse, tostring
+from xml.etree.cElementTree import register_namespace
+if sys.version_info.major == 2:
+    from xml.etree.ElementTree import Element, SubElement, ElementTree
+else:
+    from xml.etree.cElementTree import Element, SubElement, ElementTree
+from defusedxml.minidom import parseString
 import warnings
-from io import StringIO
 from tempfile import gettempdir
 from time import time
-import numpy as np
 
 # Internal dependencies
 from .parser import parse_path
@@ -52,17 +55,13 @@ from .parser import parse_transform
 from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd,
                            polyline2pathd, polygon2pathd, rect2pathd)
 from .misctools import open_in_browser
-from .path import transform, Path, is_path_segment
+from .path import *
 
 # To maintain forward/backward compatibility
 try:
-    string = basestring
+    str = basestring
 except NameError:
-    string = str
-try:
-    from os import PathLike
-except ImportError:
-    PathLike = string
+    pass
 
 # Let xml.etree.ElementTree know about the SVG namespace
 SVG_NAMESPACE = {'svg': 'http://www.w3.org/2000/svg'}
@@ -103,9 +102,6 @@ def flattened_paths(group, group_filter=lambda x: True,
             only convert explicit path elements, pass in
             `path_conversions=CONVERT_ONLY_PATHS`.
     """
-    if not isinstance(group, Element):
-        raise TypeError('Must provide an xml.etree.Element object. '
-                        'Instead you provided {0}'.format(type(group)))
 
     # Stop right away if the group_selector rejects this group
     if not group_filter(group):
@@ -241,31 +237,22 @@ class Document:
         The output Path objects will be transformed based on their parent groups.
         
         Args:
-            filepath (str or file-like): The filepath of the
-                DOM-style object or a file-like object containing it.
+            filepath (str): The filepath of the DOM-style object.
         """
 
-        # strings are interpreted as file location everything else is treated as
-        # file-like object and passed to the xml parser directly
-        from_filepath = isinstance(filepath, string) or isinstance(filepath, PathLike)
-        self.original_filepath = os.path.abspath(filepath) if from_filepath else None
+        # remember location of original svg file
+        self.original_filepath = filepath
+        if filepath is not None and os.path.dirname(filepath) == '':
+            self.original_filepath = os.path.join(os.getcwd(), filepath)
 
         if filepath is None:
-            self.tree = etree.ElementTree(Element('svg'))
+            self.tree = ElementTree(Element('svg'))
         else:
             # parse svg to ElementTree object
-            self.tree = etree.parse(filepath)
+            self.tree = parse(filepath)
 
         self.root = self.tree.getroot()
 
-    @classmethod
-    def from_svg_string(cls, svg_string):
-        """Constructor for creating a Document object from a string."""
-        # wrap string into StringIO object
-        svg_file_obj = StringIO(svg_string)
-        # create document from file object
-        return Document(svg_file_obj)
-
     def paths(self, group_filter=lambda x: True,
               path_filter=lambda x: True, path_conversions=CONVERSIONS):
         """Returns a list of all paths in the document.
@@ -278,7 +265,7 @@ class Document:
 
     def paths_from_group(self, group, recursive=True, group_filter=lambda x: True,
                          path_filter=lambda x: True, path_conversions=CONVERSIONS):
-        if all(isinstance(s, string) for s in group):
+        if all(isinstance(s, str) for s in group):
             # If we're given a list of strings, assume it represents a
             # nested sequence
             group = self.get_group(group)
@@ -304,7 +291,7 @@ class Document:
 
         # If given a list of strings (one or more), assume it represents
         # a sequence of nested group names
-        elif len(group) > 0 and all(isinstance(elem, str) for elem in group):
+        elif all(isinstance(elem, str) for elem in group):
             group = self.get_or_add_group(group)
 
         elif not isinstance(group, Element):
@@ -323,7 +310,7 @@ class Document:
             path_svg = path.d()
         elif is_path_segment(path):
             path_svg = Path(path).d()
-        elif isinstance(path, string):
+        elif isinstance(path, str):
             # Assume this is a valid d-string.
             # TODO: Should we sanity check the input string?
             path_svg = path
@@ -431,7 +418,7 @@ class Document:
             SVG_NAMESPACE['svg']), group_attribs)
 
     def __repr__(self):
-        return etree.tostring(self.tree.getroot()).decode()
+        return tostring(self.tree.getroot()).decode()
 
     def pretty(self, **kwargs):
         return parseString(repr(self)).toprettyxml(**kwargs)

svgpathtools/path.py

@@ -43,8 +43,8 @@ except NameError:
 COMMANDS = set('MmZzLlHhVvCcSsQqTtAa')
 UPPERCASE = set('MZLHVCSQTA')
 
-COMMAND_RE = re.compile(r"([MmZzLlHhVvCcSsQqTtAa])")
-FLOAT_RE = re.compile(r"[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?")
+COMMAND_RE = re.compile("([MmZzLlHhVvCcSsQqTtAa])")
+FLOAT_RE = re.compile("[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?")
 
 # Default Parameters ##########################################################
 
@@ -189,6 +189,7 @@ def bez2poly(bez, numpy_ordering=True, return_poly1d=False):
 def transform_segments_together(path, transformation):
     """Makes sure that, if joints were continuous, they're kept that way."""
     transformed_segs = [transformation(seg) for seg in path]
+    joint_was_continuous = [sa.end == sb.start for sa, sb in path.joints()]
 
     for i, (sa, sb) in enumerate(path.joints()):
         if sa.end == sb.start:
@@ -201,7 +202,7 @@ def rotate(curve, degs, origin=None):
     (a complex number).  By default origin is either `curve.point(0.5)`, or in
     the case that curve is an Arc object, `origin` defaults to `curve.center`.
     """
-    def rotate_point(z):
+    def transform(z):
         return exp(1j*radians(degs))*(z - origin) + origin
 
     if origin is None:
@@ -214,10 +215,10 @@ def rotate(curve, degs, origin=None):
         transformation = lambda seg: rotate(seg, degs, origin=origin)
         return transform_segments_together(curve, transformation)
     elif is_bezier_segment(curve):
-        return bpoints2bezier([rotate_point(bpt) for bpt in curve.bpoints()])
+        return bpoints2bezier([transform(bpt) for bpt in curve.bpoints()])
     elif isinstance(curve, Arc):
-        new_start = rotate_point(curve.start)
-        new_end = rotate_point(curve.end)
+        new_start = transform(curve.start)
+        new_end = transform(curve.end)
         new_rotation = curve.rotation + degs
         return Arc(new_start, radius=curve.radius, rotation=new_rotation,
                    large_arc=curve.large_arc, sweep=curve.sweep, end=new_end)
@@ -294,10 +295,6 @@ def scale(curve, sx, sy=None, origin=0j):
 
 def transform(curve, tf):
     """Transforms the curve by the homogeneous transformation matrix tf"""
-
-    if all((tf == np.eye(3)).ravel()):
-        return curve  # tf is identity, return curve as is
-
     def to_point(p):
         return np.array([[p.real], [p.imag], [1.0]])
 
@@ -318,7 +315,7 @@ def transform(curve, tf):
         new_start = to_complex(tf.dot(to_point(curve.start)))
         new_end = to_complex(tf.dot(to_point(curve.end)))
         
-        # Based on https://math.stackexchange.com/questions/2349726/
+        # Based on https://math.stackexchange.com/questions/2349726/compute-the-major-and-minor-axis-of-an-ellipse-after-linearly-transforming-it
         rx2 = curve.radius.real ** 2
         ry2 = curve.radius.imag ** 2
 
@@ -338,14 +335,10 @@ def transform(curve, tf):
 
         if new_radius.real == 0 or new_radius.imag == 0 :
             return Line(new_start, new_end)
-        else:
-            if tf[0][0] * tf[1][1] >= 0.0:
-                new_sweep = curve.sweep
-            else:
-                new_sweep = not curve.sweep
+        else : 
             return Arc(new_start, radius=new_radius, rotation=curve.rotation + rot,
-                       large_arc=curve.large_arc, sweep=new_sweep, end=new_end,
-                       autoscale_radius=True)
+                       large_arc=curve.large_arc, sweep=curve.sweep, end=new_end,
+                       autoscale_radius=False)
 
     else:
         raise TypeError("Input `curve` should be a Path, Line, "
@@ -715,19 +708,6 @@ class Line(object):
         Note: This will fail if the two segments coincide for more than a
         finite collection of points.
         tol is not used."""
-        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
-            ob = [e.real for e in other_seg.bpoints()]
-            sb = [e.real for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
-            ob = [e.imag for e in other_seg.bpoints()]
-            sb = [e.imag for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
         if isinstance(other_seg, Line):
             assert other_seg.end != other_seg.start and self.end != self.start
             assert self != other_seg
@@ -940,6 +920,7 @@ class QuadraticBezier(object):
         if t0 == 1 and t1 == 0:
             if self._length_info['bpoints'] == self.bpoints():
                 return self._length_info['length']
+
         a = self.start - 2*self.control + self.end
         b = 2*(self.control - self.start)
         a_dot_b = a.real*b.real + a.imag*b.imag
@@ -947,6 +928,8 @@ class QuadraticBezier(object):
         if abs(a) < 1e-12:
             s = abs(b)*(t1 - t0)
         else:
+            with np.testing.suppress_warnings() as sup:
+                sup.filter(RuntimeWarning)
                 c2 = 4 * (a.real ** 2 + a.imag ** 2)
                 c1 = 4 * a_dot_b
                 c0 = b.real ** 2 + b.imag ** 2
@@ -961,6 +944,7 @@ class QuadraticBezier(object):
                 s = (t1 + beta) * dq1_mag - (t0 + beta) * dq0_mag + \
                     gamma * sqrt(c2) * log(logarand)
                 s /= 2
+
             if isnan(s):
                 tstar = abs(b) / (2 * abs(a))
                 if t1 < tstar:
@@ -1055,19 +1039,6 @@ class QuadraticBezier(object):
         self.point(t1) == other_seg.point(t2).
         Note: This will fail if the two segments coincide for more than a
         finite collection of points."""
-        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
-            ob = [e.real for e in other_seg.bpoints()]
-            sb = [e.real for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
-            ob = [e.imag for e in other_seg.bpoints()]
-            sb = [e.imag for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
         if isinstance(other_seg, Line):
             return bezier_by_line_intersections(self, other_seg)
         elif isinstance(other_seg, QuadraticBezier):
@@ -1328,19 +1299,6 @@ class CubicBezier(object):
             This will fail if the two segments coincide for more than a
             finite collection of points.
         """
-        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
-            ob = [e.real for e in other_seg.bpoints()]
-            sb = [e.real for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
-            ob = [e.imag for e in other_seg.bpoints()]
-            sb = [e.imag for e in self.bpoints()]
-            if min(ob) > max(sb):
-                return []
-            if max(ob) < min(sb):
-                return []
         if isinstance(other_seg, Line):
             return bezier_by_line_intersections(self, other_seg)
         elif (isinstance(other_seg, QuadraticBezier) or
@@ -1398,7 +1356,7 @@ class CubicBezier(object):
 class Arc(object):
     def __init__(self, start, radius, rotation, large_arc, sweep, end,
                  autoscale_radius=True):
-        r"""
+        """
         This should be thought of as a part of an ellipse connecting two
         points on that ellipse, start and end.
         Parameters
@@ -2572,7 +2530,7 @@ class Path(MutableSequence):
 
         # Shortcuts
         if len(self._segments) == 0:
-            raise ValueError("This path contains no segments!")
+            return None
         if pos == 0.0:
             return self._segments[0].point(pos)
         if pos == 1.0:
@@ -2589,7 +2547,6 @@ class Path(MutableSequence):
                     segment_end - segment_start)
                 return segment.point(segment_pos)
             segment_start = segment_end
-        raise RuntimeError("Something has gone wrong.  Could not compute Path.point({}) for path {}".format(pos, self))
 
     def length(self, T0=0, T1=1, error=LENGTH_ERROR, min_depth=LENGTH_MIN_DEPTH):
         self._calc_lengths(error=error, min_depth=min_depth)

svgpathtools/paths2svg.py

@@ -8,7 +8,7 @@ from __future__ import division, absolute_import, print_function
 from math import ceil
 from os import path as os_path, makedirs
 from tempfile import gettempdir
-from xml.dom.minidom import parse as md_xml_parse
+from defusedxml.minidom import parse as md_xml_parse
 from svgwrite import Drawing, text as txt
 from time import time
 from warnings import warn
@@ -214,13 +214,10 @@ def disvg(paths=None, colors=None, filename=None, stroke_widths=None,
         timestamp = True if timestamp is None else timestamp
         filename = os_path.join(gettempdir(), 'disvg_output.svg')
 
-    dirname = os_path.abspath(os_path.dirname(filename))
-    if not os_path.exists(dirname):
-        makedirs(dirname)
-
     # append time stamp to filename
     if timestamp:
         fbname, fext = os_path.splitext(filename)
+        dirname = os_path.dirname(filename)
         tstamp = str(time()).replace('.', '')
         stfilename = os_path.split(fbname)[1] + '_' + tstamp + fext
         filename = os_path.join(dirname, stfilename)
@@ -410,6 +407,9 @@ def disvg(paths=None, colors=None, filename=None, stroke_widths=None,
     if paths2Drawing:
         return dwg
       
+    # save svg
+    if not os_path.exists(os_path.dirname(filename)):
+        makedirs(os_path.dirname(filename))
     dwg.save()
 
     # re-open the svg, make the xml pretty, and save it again

svgpathtools/polytools.py

@@ -10,19 +10,26 @@ from .misctools import isclose
 
 
 def polyroots(p, realroots=False, condition=lambda r: True):
-    """
-    Returns the roots of a polynomial with coefficients given in p.
+    """Returns the roots of a polynomial with coefficients given in p.
+
         p[0] * x**n + p[1] * x**(n-1) + ... + p[n-1]*x + p[n]
-    INPUT:
-    p - Rank-1 array-like object of polynomial coefficients.
-    realroots - a boolean.  If true, only real roots will be returned  and the
-        condition function can be written assuming all roots are real.
-    condition - a boolean-valued function.  Only roots satisfying this will be
-        returned.  If realroots==True, these conditions should assume the roots
+
+    Args:
+        p: 1D array-like object of polynomial coefficients.
+        realroots: a boolean.  If true, only real roots will be returned
+            and the condition function can be written assuming all roots
             are real.
-    OUTPUT:
-    A list containing the roots of the polynomial.
-    NOTE:  This uses np.isclose and np.roots"""
+        condition: a boolean-valued function.  Only roots satisfying
+            this will be returned.  If realroots==True, these conditions
+            should assume the roots are real.
+
+    Returns:
+        (list) A list containing the roots of the polynomial.
+
+    Notes:
+        * This uses np.isclose and np.roots
+    """
+
     roots = np.roots(p)
     if realroots:
         roots = [r.real for r in roots if isclose(r.imag, 0)]
@@ -36,16 +43,18 @@ def polyroots(p, realroots=False, condition=lambda r: True):
 
 
 def polyroots01(p):
-    """Returns the real roots between 0 and 1 of the polynomial with
-    coefficients given in p,
+    """Returns the real roots 0 < x < 1 of the polynomial given by `p`.
+
         p[0] * x**n + p[1] * x**(n-1) + ... + p[n-1]*x + p[n]
-    p can also be a np.poly1d object.  See polyroots for more information."""
+
+    Notes:
+        p can also be a np.poly1d object.  See polyroots for more information.
+    """
     return polyroots(p, realroots=True, condition=lambda tval: 0 <= tval <= 1)
 
 
 def rational_limit(f, g, t0):
-    """Computes the limit of the rational function (f/g)(t)
-    as t approaches t0."""
+    """Computes the limit of the rational function (f/g)(t) as t approaches t0."""
     assert isinstance(f, np.poly1d) and isinstance(g, np.poly1d)
     assert g != np.poly1d([0])
     if g(t0) != 0:

svgpathtools/svg_io_sax.py

@@ -5,8 +5,8 @@
 # External dependencies
 from __future__ import division, absolute_import, print_function
 import os
-from xml.etree.ElementTree import iterparse, Element, ElementTree, SubElement
-import numpy as np
+from xml.etree.cElementTree import Element, ElementTree, SubElement
+from defusedxml.cElementTree import iterparse
 
 # Internal dependencies
 from .parser import parse_path
@@ -14,13 +14,13 @@ from .parser import parse_transform
 from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd,
                            polyline2pathd, polygon2pathd, rect2pathd)
 from .misctools import open_in_browser
-from .path import transform
+from .path import *
 
 # To maintain forward/backward compatibility
 try:
-    string = basestring
+    str = basestring
 except NameError:
-    string = str
+    pass
 
 NAME_SVG = "svg"
 ATTR_VERSION = "version"
@@ -165,17 +165,17 @@ class SaxDocument:
             if matrix is not None and not np.all(np.equal(matrix, identity)):
                 matrix_string = "matrix("
                 matrix_string += " "
-                matrix_string += string(matrix[0][0])
+                matrix_string += str(matrix[0][0])
                 matrix_string += " "
-                matrix_string += string(matrix[1][0])
+                matrix_string += str(matrix[1][0])
                 matrix_string += " "
-                matrix_string += string(matrix[0][1])
+                matrix_string += str(matrix[0][1])
                 matrix_string += " "
-                matrix_string += string(matrix[1][1])
+                matrix_string += str(matrix[1][1])
                 matrix_string += " "
-                matrix_string += string(matrix[0][2])
+                matrix_string += str(matrix[0][2])
                 matrix_string += " "
-                matrix_string += string(matrix[1][2])
+                matrix_string += str(matrix[1][2])
                 matrix_string += ")"
                 path.set(ATTR_TRANSFORM, matrix_string)
             if ATTR_DATA in values:

svgpathtools/svg_to_paths.py

@@ -3,14 +3,9 @@ The main tool being the svg2paths() function."""
 
 # External dependencies
 from __future__ import division, absolute_import, print_function
-from xml.dom.minidom import parse
-import os
-from io import StringIO
+from defusedxml.minidom import parse
+from os import path as os_path, getcwd
 import re
-try:
-    from os import PathLike as FilePathLike
-except ImportError:
-    FilePathLike = str
 
 # Internal dependencies
 from .parser import parse_path
@@ -51,7 +46,7 @@ def ellipse2pathd(ellipse):
     d += 'a' + str(rx) + ',' + str(ry) + ' 0 1,0 ' + str(2 * rx) + ',0'
     d += 'a' + str(rx) + ',' + str(ry) + ' 0 1,0 ' + str(-2 * rx) + ',0'
 
-    return d + 'z'
+    return d
 
 
 def polyline2pathd(polyline, is_polygon=False):
@@ -91,39 +86,14 @@ def rect2pathd(rect):
     
     The rectangle will start at the (x,y) coordinate specified by the 
     rectangle object and proceed counter-clockwise."""
-    x, y = float(rect.get('x', 0)), float(rect.get('y', 0))
+    x0, y0 = float(rect.get('x', 0)), float(rect.get('y', 0))
     w, h = float(rect.get('width', 0)), float(rect.get('height', 0))
-    if 'rx' in rect or 'ry' in rect:
-
-        # if only one, rx or ry, is present, use that value for both
-        # https://developer.mozilla.org/en-US/docs/Web/SVG/Element/rect
-        rx = rect.get('rx', None)
-        ry = rect.get('ry', None)
-        if rx is None:
-            rx = ry or 0.
-        if ry is None:
-            ry = rx or 0.
-        rx, ry = float(rx), float(ry)
-
-        d = "M {} {} ".format(x + rx, y)  # right of p0
-        d += "L {} {} ".format(x + w - rx, y)  # go to p1
-        d += "A {} {} 0 0 1 {} {} ".format(rx, ry, x+w, y+ry)  # arc for p1
-        d += "L {} {} ".format(x+w, y+h-ry)  # above p2
-        d += "A {} {} 0 0 1 {} {} ".format(rx, ry, x+w-rx, y+h)  # arc for p2
-        d += "L {} {} ".format(x+rx, y+h)  # right of p3
-        d += "A {} {} 0 0 1 {} {} ".format(rx, ry, x, y+h-ry)  # arc for p3
-        d += "L {} {} ".format(x, y+ry)  # below p0
-        d += "A {} {} 0 0 1 {} {} z".format(rx, ry, x+rx, y)  # arc for p0
-        return d
-
-    x0, y0 = x, y
-    x1, y1 = x + w, y
-    x2, y2 = x + w, y + h
-    x3, y3 = x, y + h
+    x1, y1 = x0 + w, y0
+    x2, y2 = x0 + w, y0 + h
+    x3, y3 = x0, y0 + h
 
     d = ("M{} {} L {} {} L {} {} L {} {} z"
          "".format(x0, y0, x1, y1, x2, y2, x3, y3))
-        
     return d
 
 
@@ -149,9 +119,7 @@ def svg2paths(svg_file_location,
     SVG Path, Line, Polyline, Polygon, Circle, and Ellipse elements.
 
     Args:
-        svg_file_location (string or file-like object): the location of the
-            svg file on disk or a file-like object containing the content of a
-            svg file
+        svg_file_location (string): the location of the svg file
         return_svg_attributes (bool): Set to True and a dictionary of
             svg-attributes will be extracted and returned.  See also the 
             `svg2paths2()` function.
@@ -175,10 +143,8 @@ def svg2paths(svg_file_location,
         list: The list of corresponding path attribute dictionaries.
         dict (optional): A dictionary of svg-attributes (see `svg2paths2()`).
     """
-    # strings are interpreted as file location everything else is treated as
-    # file-like object and passed to the xml parser directly
-    from_filepath = isinstance(svg_file_location, str) or isinstance(svg_file_location, FilePathLike)
-    svg_file_location = os.path.abspath(svg_file_location) if from_filepath else svg_file_location
+    if os_path.dirname(svg_file_location) == '':
+        svg_file_location = os_path.join(getcwd(), svg_file_location)
 
     doc = parse(svg_file_location)
 
@@ -258,26 +224,3 @@ def svg2paths2(svg_file_location,
                      convert_polylines_to_paths=convert_polylines_to_paths,
                      convert_polygons_to_paths=convert_polygons_to_paths,
                      convert_rectangles_to_paths=convert_rectangles_to_paths)
-
-
-def svgstr2paths(svg_string,
-               return_svg_attributes=False,
-               convert_circles_to_paths=True,
-               convert_ellipses_to_paths=True,
-               convert_lines_to_paths=True,
-               convert_polylines_to_paths=True,
-               convert_polygons_to_paths=True,
-               convert_rectangles_to_paths=True):
-    """Convenience function; identical to svg2paths() except that it takes the
-    svg object as string.  See svg2paths() docstring for more
-    info."""
-    # wrap string into StringIO object
-    svg_file_obj = StringIO(svg_string)
-    return svg2paths(svg_file_location=svg_file_obj,
-                     return_svg_attributes=return_svg_attributes,
-                     convert_circles_to_paths=convert_circles_to_paths,
-                     convert_ellipses_to_paths=convert_ellipses_to_paths,
-                     convert_lines_to_paths=convert_lines_to_paths,
-                     convert_polylines_to_paths=convert_polylines_to_paths,
-                     convert_polygons_to_paths=convert_polygons_to_paths,
-                     convert_rectangles_to_paths=convert_rectangles_to_paths)

test/negative-scale.svg

@@ -1,19 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg width="100mm" height="100mm" viewBox="-100 -200 500 500" xmlns="http://www.w3.org/2000/svg" version="1.1">
-    <g id="Sketch" transform="scale(1,-1)">
-        <path id="slot" d="
-            M 0 10
-            L 0 80
-            A 30 30 0 1 0 0 140
-            A 10 10 0 0 1 0 100
-            L 100 100
-            A 10 10 0 1 1 100 140
-            A 30 30 0 0 0 100 80
-            L 100 10
-            A 10 10 0 0 0 90 0
-            L 10 0
-            A 10 10 0 0 0 0 10
-        " stroke="#ff0000" stroke-width="0.35 px"/>
-    </g>
-</svg>

test/test_bezier.py

@@ -6,6 +6,7 @@ from svgpathtools.path import bpoints2bezier
 
 
 class HigherOrderBezier:
+    """To help test Bezier curves of arbitrary degree"""
     def __init__(self, bpoints):
         self.bpts = bpoints
 

test/test_document.py

@@ -1,54 +0,0 @@
-from __future__ import division, absolute_import, print_function
-import unittest
-from svgpathtools import Document
-from io import StringIO
-from io import open  # overrides build-in open for compatibility with python2
-from os.path import join, dirname
-from sys import version_info
-
-
-class TestDocument(unittest.TestCase):
-    def test_from_file_path_string(self):
-        """Test reading svg from file provided as path"""
-        doc = Document(join(dirname(__file__), 'polygons.svg'))
-
-        self.assertEqual(len(doc.paths()), 2)
-
-    def test_from_file_path(self):
-        """Test reading svg from file provided as path"""
-        if version_info >= (3, 6):
-            import pathlib
-            doc = Document(pathlib.Path(__file__).parent / 'polygons.svg')
-
-            self.assertEqual(len(doc.paths()), 2)
-
-    def test_from_file_object(self):
-        """Test reading svg from file object that has already been opened"""
-        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
-            doc = Document(file)
-
-            self.assertEqual(len(doc.paths()), 2)
-
-    def test_from_stringio(self):
-        """Test reading svg object contained in a StringIO object"""
-        with open(join(dirname(__file__), 'polygons.svg'),
-                  'r', encoding='utf-8') as file:
-            # read entire file into string
-            file_content = file.read()
-            # prepare stringio object
-            file_as_stringio = StringIO(file_content)
-
-            doc = Document(file_as_stringio)
-
-            self.assertEqual(len(doc.paths()), 2)
-
-    def test_from_string(self):
-        """Test reading svg object contained in a string"""
-        with open(join(dirname(__file__), 'polygons.svg'),
-                  'r', encoding='utf-8') as file:
-            # read entire file into string
-            file_content = file.read()
-
-            doc = Document.from_svg_string(file_content)
-
-            self.assertEqual(len(doc.paths()), 2)

test/test_generation.py

@@ -1,5 +1,4 @@
-# Note: This file was taken mostly as is from the svg.path module (v 2.0)
-#------------------------------------------------------------------------------
+"""credit: This was modified from a file in the svg.path module (v 2.0)"""
 from __future__ import division, absolute_import, print_function
 import unittest
 from svgpathtools import parse_path

test/test_groups.py

@@ -5,15 +5,11 @@ $ python -m unittest test.test_groups.TestGroups.test_group_flatten
 """
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import Document, SVG_NAMESPACE, parse_path, Line, Arc
+from svgpathtools import Document, SVG_NAMESPACE, parse_path
 from os.path import join, dirname
 import numpy as np
 
 
-# When an assert fails, show the full error message, don't truncate it.
-unittest.util._MAX_LENGTH = 999999999
-
-
 def get_desired_path(name, paths):
     return next(p for p in paths
                 if p.element.get('{some://testuri}name') == name)
@@ -46,22 +42,6 @@ class TestGroups(unittest.TestCase):
         self.check_values(tf.dot(v_s), actual.start)
         self.check_values(tf.dot(v_e), actual.end)
 
-    def test_group_transform(self):
-        # The input svg has a group transform of "scale(1,-1)", which
-        # can mess with Arc sweeps.
-        doc = Document(join(dirname(__file__), 'negative-scale.svg'))
-        path = doc.paths()[0]
-        self.assertEqual(path[0], Line(start=-10j, end=-80j))
-        self.assertEqual(path[1], Arc(start=-80j, radius=(30+30j), rotation=0.0, large_arc=True, sweep=True, end=-140j))
-        self.assertEqual(path[2], Arc(start=-140j, radius=(20+20j), rotation=0.0, large_arc=False, sweep=False, end=-100j))
-        self.assertEqual(path[3], Line(start=-100j, end=(100-100j)))
-        self.assertEqual(path[4], Arc(start=(100-100j), radius=(20+20j), rotation=0.0, large_arc=True, sweep=False, end=(100-140j)))
-        self.assertEqual(path[5], Arc(start=(100-140j), radius=(30+30j), rotation=0.0, large_arc=False, sweep=True, end=(100-80j)))
-        self.assertEqual(path[6], Line(start=(100-80j), end=(100-10j)))
-        self.assertEqual(path[7], Arc(start=(100-10j), radius=(10+10j), rotation=0.0, large_arc=False, sweep=True, end=(90+0j)))
-        self.assertEqual(path[8], Line(start=(90+0j), end=(10+0j)))
-        self.assertEqual(path[9], Arc(start=(10+0j), radius=(10+10j), rotation=0.0, large_arc=False, sweep=True, end=-10j))
-
     def test_group_flatten(self):
         # Test the Document.paths() function against the
         # groups.svg test file.
@@ -256,10 +236,3 @@ class TestGroups(unittest.TestCase):
         path = parse_path(path_d)
         svg_path = doc.add_path(path, group=new_leaf)
         self.assertEqual(path_d, svg_path.get('d'))
-
-        # Test that paths are added to the correct group
-        new_sibling = doc.get_or_add_group(
-            ['base_group', 'new_parent', 'new_sibling'])
-        doc.add_path(path, group=new_sibling)
-        self.assertEqual(len(new_sibling), 1)
-        self.assertEqual(path_d, new_sibling[0].get('d'))

test/test_parsing.py

@@ -1,9 +1,8 @@
 # Note: This file was taken mostly as is from the svg.path module (v 2.0)
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import Path, Line, QuadraticBezier, CubicBezier, Arc, parse_path
+from svgpathtools import parse_path, Path, Line, QuadraticBezier, CubicBezier, Arc
 import svgpathtools
-
 import numpy as np
 
 

test/test_path.py

@@ -1,9 +1,6 @@
 # External dependencies
 from __future__ import division, absolute_import, print_function
-import os
-import time
-from sys import version_info
-import unittest
+from unittest import TestCase
 from math import sqrt, pi
 from operator import itemgetter
 import numpy as np
@@ -12,10 +9,9 @@ import warnings
 
 # Internal dependencies
 from svgpathtools import (
-    Line, QuadraticBezier, CubicBezier, Arc, Path, poly2bez, path_encloses_pt,
-    bpoints2bezier, closest_point_in_path, farthest_point_in_path,
-    is_bezier_segment, is_bezier_path, parse_path
-)
+    Line, QuadraticBezier, CubicBezier, Arc, Path, parse_path,
+    is_bezier_segment, is_bezier_path, poly2bez, bpoints2bezier,
+    closest_point_in_path, farthest_point_in_path, path_encloses_pt)
 from svgpathtools.path import bezier_radialrange
 
 # An important note for those doing any debugging:
@@ -71,7 +67,25 @@ def assert_intersections(test_case, a_seg, b_seg, intersections, count, msg=None
         test_case.assertAlmostEqual(a_seg.point(i[0]), b_seg.point(i[1]), msg=msg, delta=tol)
 
 
-class LineTest(unittest.TestCase):
+class AssertWarns(warnings.catch_warnings):
+    """A python 2 compatible version of assertWarns."""
+    def __init__(self, test_case, warning):
+        self.test_case = test_case
+        self.warning_type = warning
+        self.log = None
+        super(AssertWarns, self).__init__(record=True, module=None)
+
+    def __enter__(self):
+        self.log = super(AssertWarns, self).__enter__()
+        return self.log
+
+    def __exit__(self, *exc_info):
+        super(AssertWarns, self).__exit__(*exc_info)
+        self.test_case.assertEqual(type(self.log[0]), self.warning_type)
+
+
+# noinspection PyTypeChecker
+class LineTest(TestCase):
 
     def test_lines(self):
         # These points are calculated, and not just regression tests.
@@ -165,9 +179,9 @@ class LineTest(unittest.TestCase):
         self.assertIsNone(l.point_to_t(-0.001-0j))
 
         random.seed()
-        for line_index in range(100):
+        for _ in range(100):
             l = random_line()
-            for t_index in range(100):
+            for __ in range(100):
                 orig_t = random.random()
                 p = l.point(orig_t)
                 computed_t = l.point_to_t(p)
@@ -188,7 +202,8 @@ class LineTest(unittest.TestCase):
             self.assertAlmostEqual(max_ta, max_tb, delta=TOL)
 
 
-class CubicBezierTest(unittest.TestCase):
+# noinspection PyTypeChecker
+class CubicBezierTest(TestCase):
     def test_approx_circle(self):
         """This is a approximate circle drawn in Inkscape"""
 
@@ -424,14 +439,13 @@ class CubicBezierTest(unittest.TestCase):
         segment = CubicBezier(complex(600, 500), complex(600, 350),
                               complex(900, 650), complex(900, 500))
 
-        self.assertTrue(segment ==
-                CubicBezier(600 + 500j, 600 + 350j, 900 + 650j, 900 + 500j))
-        self.assertTrue(segment !=
-                CubicBezier(600 + 501j, 600 + 350j, 900 + 650j, 900 + 500j))
+        self.assertTrue(segment == CubicBezier(600 + 500j, 600 + 350j, 900 + 650j, 900 + 500j))
+        self.assertTrue(segment != CubicBezier(600 + 501j, 600 + 350j, 900 + 650j, 900 + 500j))
         self.assertTrue(segment != Line(0, 400))
 
 
-class QuadraticBezierTest(unittest.TestCase):
+# noinspection PyTypeChecker
+class QuadraticBezierTest(TestCase):
 
     def test_svg_examples(self):
         """These is the path in the SVG specs"""
@@ -500,20 +514,19 @@ class QuadraticBezierTest(unittest.TestCase):
         # This is to test the __eq__ and __ne__ methods, so we can't use
         # assertEqual and assertNotEqual
         segment = QuadraticBezier(200 + 300j, 400 + 50j, 600 + 300j)
-        self.assertTrue(segment ==
-            QuadraticBezier(200 + 300j, 400 + 50j, 600 + 300j))
-        self.assertTrue(segment !=
-            QuadraticBezier(200 + 301j, 400 + 50j, 600 + 300j))
+        self.assertTrue(segment == QuadraticBezier(200 + 300j, 400 + 50j, 600 + 300j))
+        self.assertTrue(segment != QuadraticBezier(200 + 301j, 400 + 50j, 600 + 300j))
         self.assertFalse(segment == Arc(0j, 100 + 50j, 0, 0, 0, 100 + 50j))
         self.assertTrue(Arc(0j, 100 + 50j, 0, 0, 0, 100 + 50j) != segment)
 
 
-class ArcTest(unittest.TestCase):
+# noinspection PyTypeChecker
+class ArcTest(TestCase):
 
     def test_trusting_acos(self):
         """`u1.real` is > 1 in this arc due to numerical error."""
         try:
-            a1 = Arc(start=(160.197+102.925j),
+            _ = Arc(start=(160.197+102.925j),
                     radius=(0.025+0.025j),
                     rotation=0.0,
                     large_arc=False,
@@ -685,9 +698,9 @@ class ArcTest(unittest.TestCase):
         self.assertIsNone(a.point_to_t(730.5212132777968+171j))
 
         random.seed()
-        for arc_index in range(100):
+        for _ in range(100):
             a = random_arc()
-            for t_index in np.linspace(0, 1, 100):
+            for __ in np.linspace(0, 1, 100):
                 orig_t = random.random()
                 p = a.point(orig_t)
                 computed_t = a.point_to_t(p)
@@ -697,7 +710,7 @@ class ArcTest(unittest.TestCase):
 
     def test_approx_quad(self):
         n = 100
-        for i in range(n):
+        for _ in range(n):
             arc = random_arc()
             if arc.radius.real > 2000 or arc.radius.imag > 2000:
                 continue  # Random Arc too large, by autoscale.
@@ -710,7 +723,7 @@ class ArcTest(unittest.TestCase):
 
     def test_approx_cubic(self):
         n = 100
-        for i in range(n):
+        for _ in range(n):
             arc = random_arc()
             if arc.radius.real > 2000 or arc.radius.imag > 2000:
                 continue  # Random Arc too large, by autoscale.
@@ -722,66 +735,62 @@ class ArcTest(unittest.TestCase):
             self.assertAlmostEqual(d, 0.0, delta=2)
 
 
-class TestPath(unittest.TestCase):
+# noinspection PyTypeChecker
+class TestPath(TestCase):
 
-    def test_hash(self):
-        line1 = Line(600.5 + 350.5j, 650.5 + 325.5j)
-        arc1 = Arc(650 + 325j, 25 + 25j, -30, 0, 1, 700 + 300j)
-        arc2 = Arc(650 + 325j, 30 + 25j, -30, 0, 0, 700 + 300j)
-        cub1 = CubicBezier(650 + 325j, 25 + 25j, -30, 700 + 300j)
-        cub2 = CubicBezier(700 + 300j, 800 + 400j, 750 + 200j, 600 + 100j)
-        quad3 = QuadraticBezier(600 + 100j, 600, 600 + 300j)
-        linez = Line(600 + 300j, 600 + 350j)
-
-        bezpath = Path(line1, cub1, cub2, quad3)
-        bezpathz = Path(line1, cub1, cub2, quad3, linez)
-        path = Path(line1, arc1, cub2, quad3)
-        pathz = Path(line1, arc1, cub2, quad3, linez)
-        lpath = Path(linez)
-        qpath = Path(quad3)
-        cpath = Path(cub1)
-        apath = Path(arc1, arc2)
-
-        test_curves = [bezpath, bezpathz, path, pathz, lpath, qpath, cpath,
-                       apath, line1, arc1, arc2, cub1, cub2, quad3, linez]
-
-        # this is necessary due to changes to the builtin `hash` function
-        user_hash_seed = os.environ.get("PYTHONHASHSEED", "")
-        os.environ["PYTHONHASHSEED"] = "314"
-        if version_info >= (3, 8):
-            expected_hashes = [
-                -6073024107272494569, -2519772625496438197, 8726412907710383506,
-                2132930052750006195, 3112548573593977871, 991446120749438306,
-                -5589397644574569777, -4438808571483114580, -3125333407400456536,
-                -4418099728831808951, 702646573139378041, -6331016786776229094,
-                5053050772929443013, 6102272282813527681, -5385294438006156225
-            ]
-        elif (3, 2) <= version_info < (3, 8):
-            expected_hashes = [
-                -5662973462929734898, 5166874115671195563, 5223434942701471389,
-                -7224979960884350294, -5178990533869800243, -4003140762934044601,
-                8575549467429100514, -6692132994808317852, 1594848578230132678,
-                -6374833902132909499, 4188352014604112779, -5090374009174854814,
-                -7093907105533857815, 2036243740727202243, -8108488067585685407
-            ]
-        else:
-
-            expected_hashes = [
-                -5762846476463470127, -138736730317965290, -2005041722222729058,
-                8448700906794235291, -5178990533869800243, -4003140762934044601,
-                8575549467429100514, 5166859065265868968, 1373103287265872323,
-                -1022491904150314631, 4188352014604112779, -5090374009174854814,
-                -7093907105533857815, 2036243740727202243, -8108488067585685407
-            ]
-
-        if version_info.major == 2 and os.name == 'nt':
-            # the expected hash values for 2.7 apparently differed on Windows
-            # if you work in Windows and want to fix this test, please do
-            return
-
-        for c, h in zip(test_curves, expected_hashes):
-            self.assertTrue(hash(c) == h, msg="hash {} was expected for curve = {}".format(h, c))
-        os.environ["PYTHONHASHSEED"] = user_hash_seed  # restore user's hash seed
+    # def test_hash(self):
+    #     line1 = Line(600.5 + 350.5j, 650.5 + 325.5j)
+    #     arc1 = Arc(650 + 325j, 25 + 25j, -30, 0, 1, 700 + 300j)
+    #     arc2 = Arc(650 + 325j, 30 + 25j, -30, 0, 0, 700 + 300j)
+    #     cub1 = CubicBezier(650 + 325j, 25 + 25j, -30, 700 + 300j)
+    #     cub2 = CubicBezier(700 + 300j, 800 + 400j, 750 + 200j, 600 + 100j)
+    #     quad3 = QuadraticBezier(600 + 100j, 600, 600 + 300j)
+    #     linez = Line(600 + 300j, 600 + 350j)
+    #
+    #     bezpath = Path(line1, cub1, cub2, quad3)
+    #     bezpathz = Path(line1, cub1, cub2, quad3, linez)
+    #     path = Path(line1, arc1, cub2, quad3)
+    #     pathz = Path(line1, arc1, cub2, quad3, linez)
+    #     lpath = Path(linez)
+    #     qpath = Path(quad3)
+    #     cpath = Path(cub1)
+    #     apath = Path(arc1, arc2)
+    #
+    #     test_curves = [bezpath, bezpathz, path, pathz, lpath, qpath, cpath,
+    #                    apath, line1, arc1, arc2, cub1, cub2, quad3, linez]
+    #
+    #     # this is necessary due to changes to the builtin `hash` function
+    #     python_version = sys.version_info.major + 0.1*sys.version_info.minor
+    #     user_hash_seed = os.environ.get("PYTHONHASHSEED", "")
+    #     os.environ["PYTHONHASHSEED"] = "314"
+    #     if 3.8 <= python_version:
+    #         expected_hashes = [
+    #             -6073024107272494569, -2519772625496438197, 8726412907710383506,
+    #             2132930052750006195, 3112548573593977871, 991446120749438306,
+    #             -5589397644574569777, -4438808571483114580, -3125333407400456536,
+    #             -4418099728831808951, 702646573139378041, -6331016786776229094,
+    #             5053050772929443013, 6102272282813527681, -5385294438006156225
+    #         ]
+    #     elif 3.2 <= python_version < 3.8:
+    #         expected_hashes = [
+    #             -5662973462929734898, 5166874115671195563, 5223434942701471389,
+    #             -7224979960884350294, -5178990533869800243, -4003140762934044601,
+    #             8575549467429100514, -6692132994808317852, 1594848578230132678,
+    #             -6374833902132909499, 4188352014604112779, -5090374009174854814,
+    #             -7093907105533857815, 2036243740727202243, -8108488067585685407
+    #         ]
+    #     else:
+    #         expected_hashes = [
+    #             -5762846476463470127, -138736730317965290, -2005041722222729058,
+    #             8448700906794235291, -5178990533869800243, -4003140762934044601,
+    #             8575549467429100514, 5166859065265868968, 1373103287265872323,
+    #             -1022491904150314631, 4188352014604112779, -5090374009174854814,
+    #             -7093907105533857815, 2036243740727202243, -8108488067585685407
+    #         ]
+    #
+    #     for c, h in zip(test_curves, expected_hashes):
+    #         self.assertTrue(hash(c) == h, msg="hash {} was expected for curve = {}".format(h, c))
+    #     os.environ["PYTHONHASHSEED"] = user_hash_seed  # restore user's hash seed
 
     def test_circle(self):
         arc1 = Arc(0j, 100 + 100j, 0, 0, 0, 200 + 0j)
@@ -820,8 +829,7 @@ class TestPath(unittest.TestCase):
         # regression tests.
         self.assertAlmostEqual(path.point(0.0), (275 + 175j), delta=TOL)
         self.assertAlmostEqual(path.point(0.2800495767557787), (275 + 25j), delta=TOL)
-        self.assertAlmostEqual(path.point(0.5),
-                               (168.93398282201787 + 68.93398282201787j))
+        self.assertAlmostEqual(path.point(0.5), (168.93398282201787 + 68.93398282201787j))
         self.assertAlmostEqual(path.point(1 - 0.2800495767557787), (125 + 175j), delta=TOL)
         self.assertAlmostEqual(path.point(1.0), (275 + 175j), delta=TOL)
         # The errors seem to accumulate. Still 6 decimal places is more
@@ -1051,17 +1059,17 @@ class TestPath(unittest.TestCase):
         test_curves = [bezpath, bezpathz, path, pathz, lpath, qpath, cpath,
                        apath, line1, arc1, arc2, cub1, cub2, quad3, linez]
 
-        def scale_a_point(pt, sx, sy=None, origin=0j):
+        def scale_a_point(pt_, sx_, sy_=None, origin_=0j):
 
-            if sy is None:
-                sy = sx
+            if sy_ is None:
+                sy_ = sx_
 
-            zeta = pt - origin
+            zeta = pt_ - origin_
             pt_vec = [[zeta.real],
                       [zeta.imag],
                       [1]]
-            transform = [[sx, 0, origin.real],
-                         [0, sy, origin.imag]]
+            transform = [[sx_, 0, origin_.real],
+                         [0, sy_, origin_.imag]]
 
             return complex(*np.dot(transform, pt_vec).ravel())
 
@@ -1085,6 +1093,8 @@ class TestPath(unittest.TestCase):
 
             # find seg which t lands on for failure reporting
             seg = curve
+            seg_idx = None
+            seg_t = None
             if isinstance(curve, Path):
                 seg_idx, seg_t = curve.T2t(t)
                 seg = curve[seg_idx]
@@ -1123,7 +1133,7 @@ class TestPath(unittest.TestCase):
                     curve.scaled(sx, sy).point(t)
             else:
                 curve_scaled = curve.scaled(sx, sy)
-                seg_scaled = seg.scaled(sx, sy)
+                _ = seg.scaled(sx, sy)
                 if isinstance(curve, Path):
                     res = curve_scaled[seg_idx].point(seg_t)
                 else:
@@ -1197,14 +1207,15 @@ class TestPath(unittest.TestCase):
         self.assertEqual(path2.d(use_closed_attrib=True, rel=True), rel_s)
 
 
-class Test_ilength(unittest.TestCase):
+# noinspection PyTypeChecker
+class Test_ilength(TestCase):
     # See svgpathtools.notes.inv_arclength.py for information on how these
     # test values were generated (using the .length() method).
     ##############################################################
 
     def test_ilength_lines(self):
         l = Line(1, 3-1j)
-        nodall = Line(1+1j, 1+1j)
+        # nodall = Line(1+1j, 1+1j)
 
         tests = [(l, 0.01, 0.022360679774997897),
                  (l, 0.1, 0.223606797749979),
@@ -1220,7 +1231,7 @@ class Test_ilength(unittest.TestCase):
         q2 = QuadraticBezier(200 + 300j, 400 + 50j, 500 + 200j)
         closedq = QuadraticBezier(6 + 2j, 5 - 1j, 6 + 2j)
         linq = QuadraticBezier(1+3j, 2+5j, -9 - 17j)
-        nodalq = QuadraticBezier(1, 1, 1)
+        # nodalq = QuadraticBezier(1, 1, 1)
 
         tests = [(q1, 0.01, 6.364183310105577),
                  (q1, 0.1, 60.23857499635088),
@@ -1244,13 +1255,7 @@ class Test_ilength(unittest.TestCase):
                  (linq, 0.99, 22.24410609777091)]
 
         for q, t, s in tests:
-            try:
             self.assertAlmostEqual(q.ilength(s), t, delta=TOL)
-            except:
-                print(q)
-                print(s)
-                print(t)
-                raise
 
     def test_ilength_cubics(self):
         c1 = CubicBezier(200 + 300j, 400 + 50j, 600+100j, -200)
@@ -1425,7 +1430,7 @@ class Test_ilength(unittest.TestCase):
         for (c, t, s) in tests:
             try:
                 self.assertAlmostEqual(c.ilength(s), t, msg=str((c, t, s)), delta=TOL)
-            except:
+            except ValueError:
                 # These test case values were generated using a system
                 # with scipy installed -- if scipy is not installed,
                 # then in cases where `t == 1`, `s` may be slightly
@@ -1448,7 +1453,8 @@ class Test_ilength(unittest.TestCase):
             lin.ilength(1)
 
 
-class Test_intersect(unittest.TestCase):
+# noinspection PyTypeChecker
+class Test_intersect(TestCase):
     def test_intersect(self):
 
         ###################################################################
@@ -1496,50 +1502,6 @@ class Test_intersect(unittest.TestCase):
             self.assertTrue(len(yix) == 1)
         ###################################################################
 
-    def test_random_intersections(self):
-        from random import Random
-        r = Random()
-        distance = 100
-        distribution = 10000
-        count = 500
-
-        def random_complex(offset_x=0.0, offset_y=0.0):
-            return complex(r.random() * distance + offset_x, r.random() * distance + offset_y)
-
-        def random_line():
-            offset_x = r.random() * distribution
-            offset_y = r.random() * distribution
-            return Line(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
-
-        def random_quad():
-            offset_x = r.random() * distribution
-            offset_y = r.random() * distribution
-            return QuadraticBezier(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
-
-        def random_cubic():
-            offset_x = r.random() * distribution
-            offset_y = r.random() * distribution
-            return CubicBezier(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
-
-        def random_path():
-            path = Path()
-            for i in range(count):
-                type_segment = random.randint(0, 3)
-                if type_segment == 0:
-                    path.append(random_line())
-                if type_segment == 1:
-                    path.append(random_quad())
-                if type_segment == 2:
-                    path.append(random_cubic())
-            return path
-
-        path1 = random_path()
-        path2 = random_path()
-        t = time.time()
-        intersections = path1.intersect(path2)
-        print("\nFound {} intersections in {} seconds.\n"
-              "".format(len(intersections), time.time() - t))
-
     def test_line_line_0(self):
         l0 = Line(start=(25.389999999999997+99.989999999999995j),
                   end=(25.389999999999997+90.484999999999999j))
@@ -1633,9 +1595,9 @@ class Test_intersect(unittest.TestCase):
         assert_intersections(self, a, l, intersections, 0)
 
         random.seed()
-        for arc_index in range(50):
+        for _ in range(50):
             a = random_arc()
-            for line_index in range(100):
+            for __ in range(100):
                 l = random_line()
                 intersections = a.intersect(l)
                 msg = 'Generated: arc = {}, line = {}'.format(a, l)
@@ -1792,7 +1754,8 @@ class Test_intersect(unittest.TestCase):
         assert_intersections(self, a0, a1, intersections, 0)
 
 
-class TestPathTools(unittest.TestCase):
+# noinspection PyTypeChecker
+class TestPathTools(TestCase):
     # moved from test_pathtools.py
 
     def setUp(self):
@@ -2027,7 +1990,7 @@ class TestPathTools(unittest.TestCase):
 
     def test_path_area(self):
         if not RUN_SLOW_TESTS:
-            warnings.warn("Skipping `test_path_area` as RUN_SLOW_TESTS is false.")
+            # warnings.warn("Skipping `test_path_area` as RUN_SLOW_TESTS is false.")
             return
         cw_square = Path()
         cw_square.append(Line((0+0j), (0+100j)))
@@ -2083,7 +2046,8 @@ class TestPathTools(unittest.TestCase):
         self.assertTrue(enclosing_shape.is_contained_by(larger_shape))
 
 
-class TestPathBugs(unittest.TestCase):
+# noinspection PyTypeChecker
+class TestPathBugs(TestCase):
 
     def test_issue_113(self):
         """
@@ -2107,9 +2071,21 @@ class TestPathBugs(unittest.TestCase):
         self.assertAlmostEqual(p.length(), 236.70287281737836, delta=TOL)
 
     def test_issue_71(self):
-        p = Path("M327 468z")
-        m = p.closed
-        q = p.d()  # Failing to Crash is good.
+        """Test that degenerate (point-like) paths behave properly."""
+        # degenerate (point-like) closed path
+        d_string = "M327 468z"
+        path = Path(d_string)
+
+        warning_type = warnings.WarningMessage
+        with AssertWarns(self, warning_type):
+            self.assertTrue(path.closed)
+
+        # test the Path.d() method reproduces an empty d-string
+        # note that ideally this would reproduce the original, but
+        # as a Path is a sequence of Bezier segments and arcs, and this
+        # d-string contains no Bezier segments or arcs, this output seems
+        # like an acceptable compromise
+        self.assertEqual(path.d(), '')
 
     def test_issue_95(self):
         """
@@ -2128,4 +2104,5 @@ class TestPathBugs(unittest.TestCase):
 
 
 if __name__ == '__main__':
-    unittest.main()
+    from unittest import main
+    main()

test/test_svg2paths.py

@@ -1,15 +1,7 @@
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import Path, Line, Arc, svg2paths, svgstr2paths
-from io import StringIO
-from io import open  # overrides build-in open for compatibility with python2
-import os
+from svgpathtools import svg2paths, Path, Line, Arc
 from os.path import join, dirname
-from sys import version_info
-import tempfile
-import shutil
-
-from svgpathtools.svg_to_paths import rect2pathd
 
 
 class TestSVG2Paths(unittest.TestCase):
@@ -24,8 +16,8 @@ class TestSVG2Paths(unittest.TestCase):
                             Line(105.5+50j, 55.5+0j)
                             )
         self.assertTrue(path.isclosed())
-        self.assertTrue(len(path)==3)
-        self.assertTrue(path==path_correct)
+        self.assertEqual(len(path), 3)
+        self.assertEqual(path, path_correct)
 
         # triangular quadrilateral (with a redundant 4th "closure" point)
         path = paths[1]
@@ -35,8 +27,8 @@ class TestSVG2Paths(unittest.TestCase):
                             Line(0+0j, 0+0j)  # result of redundant point
                             )
         self.assertTrue(path.isclosed())
-        self.assertTrue(len(path)==4)
-        self.assertTrue(path==path_correct)
+        self.assertEqual(len(path), 4)
+        self.assertEqual(path, path_correct)
 
     def test_svg2paths_ellipses(self):
 
@@ -46,8 +38,8 @@ class TestSVG2Paths(unittest.TestCase):
         path_ellipse = paths[0]
         path_ellipse_correct = Path(Arc(50+100j, 50+50j, 0.0, True, False, 150+100j),
                                     Arc(150+100j, 50+50j, 0.0, True, False, 50+100j))
-        self.assertTrue(len(path_ellipse)==2)
-        self.assertTrue(path_ellipse==path_ellipse_correct)
+        self.assertEqual(len(path_ellipse), 2)
+        self.assertEqual(path_ellipse, path_ellipse_correct)
         self.assertTrue(path_ellipse.isclosed())
 
         # circle tests
@@ -56,81 +48,6 @@ class TestSVG2Paths(unittest.TestCase):
         path_circle = paths[0]
         path_circle_correct = Path(Arc(50+100j, 50+50j, 0.0, True, False, 150+100j),
                                    Arc(150+100j, 50+50j, 0.0, True, False, 50+100j))
-        self.assertTrue(len(path_circle)==2)
-        self.assertTrue(path_circle==path_circle_correct)
+        self.assertEqual(len(path_circle), 2)
+        self.assertEqual(path_circle, path_circle_correct)
         self.assertTrue(path_circle.isclosed())
-
-        # test for issue #198 (circles not being closed)
-        svg = u"""<?xml version="1.0" encoding="UTF-8"?>
-        <svg xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" width="40mm" height="40mm" 
-          viewBox="0 0 40 40" version="1.1">
-            
-          <g id="layer">
-            <circle id="c1" cx="20.000" cy="20.000" r="11.000" />
-            <circle id="c2" cx="20.000" cy="20.000" r="5.15" />
-          </g>
-        </svg>"""
-        tmpdir = tempfile.mkdtemp()
-        svgfile = os.path.join(tmpdir, 'test.svg')
-        with open(svgfile, 'w') as f:
-            f.write(svg)
-        paths, _ = svg2paths(svgfile)
-        self.assertEqual(len(paths), 2)
-        self.assertTrue(paths[0].isclosed())
-        self.assertTrue(paths[1].isclosed())
-        shutil.rmtree(tmpdir)
-
-    def test_rect2pathd(self):
-        non_rounded = {"x":"10", "y":"10", "width":"100","height":"100"}
-        self.assertEqual(rect2pathd(non_rounded), 'M10.0 10.0 L 110.0 10.0 L 110.0 110.0 L 10.0 110.0 z')
-        rounded = {"x":"10", "y":"10", "width":"100","height":"100", "rx":"15", "ry": "12"}
-        self.assertEqual(rect2pathd(rounded), "M 25.0 10.0 L 95.0 10.0 A 15.0 12.0 0 0 1 110.0 22.0 L 110.0 98.0 A 15.0 12.0 0 0 1 95.0 110.0 L 25.0 110.0 A 15.0 12.0 0 0 1 10.0 98.0 L 10.0 22.0 A 15.0 12.0 0 0 1 25.0 10.0 z")
-
-    def test_from_file_path_string(self):
-        """Test reading svg from file provided as path"""
-        paths, _ = svg2paths(join(dirname(__file__), 'polygons.svg'))
-
-        self.assertEqual(len(paths), 2)
-
-    def test_from_file_path(self):
-        """Test reading svg from file provided as pathlib POSIXPath"""
-        if version_info >= (3, 6):
-            import pathlib
-            paths, _ = svg2paths(pathlib.Path(__file__).parent / 'polygons.svg')
-
-            self.assertEqual(len(paths), 2)
-
-    def test_from_file_object(self):
-        """Test reading svg from file object that has already been opened"""
-        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
-            paths, _ = svg2paths(file)
-
-            self.assertEqual(len(paths), 2)
-
-    def test_from_stringio(self):
-        """Test reading svg object contained in a StringIO object"""
-        with open(join(dirname(__file__), 'polygons.svg'),
-                  'r', encoding='utf-8') as file:
-            # read entire file into string
-            file_content = file.read()
-            # prepare stringio object
-            file_as_stringio = StringIO(file_content)
-
-            paths, _ = svg2paths(file_as_stringio)
-
-            self.assertEqual(len(paths), 2)
-
-    def test_from_string(self):
-        """Test reading svg object contained in a string"""
-        with open(join(dirname(__file__), 'polygons.svg'),
-                  'r', encoding='utf-8') as file:
-            # read entire file into string
-            file_content = file.read()
-
-            paths, _ = svgstr2paths(file_content)
-
-            self.assertEqual(len(paths), 2)
-
-
-if __name__ == '__main__':
-    unittest.main()