Merge 565686a6d5 into 0609c59676

README.md

@@ -20,7 +20,7 @@ The project moved to GitLab in 2013 an is now maintained by Tobias "oberstet" Ob
 
 ## Installation
 
-Scour requires [Python](https://www.python.org) 2.7 or 3.4+. Further, for installation, [pip](https://pip.pypa.io) should be used.
+Scour requires [Python](https://www.python.org) 3.4+. Further, for installation, [pip](https://pip.pypa.io) should be used.
 
 To install the [latest release](https://pypi.python.org/pypi/scour) of Scour from PyPI:
 

scour/__init__.py

@@ -16,4 +16,4 @@
 #
 ###############################################################################
 
-__version__ = u'0.38.2'
+__version__ = '0.38.2'

scour/scour.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 #  Scour
 #
@@ -45,23 +44,19 @@
 # - if a <g> has only one element in it, collapse the <g> (ensure transform, etc are carried down)
 
 
-from __future__ import division         # use "true" division instead of integer division in Python 2 (see PEP 238)
-from __future__ import print_function   # use print() as a function in Python 2 (see PEP 3105)
-from __future__ import absolute_import  # use absolute imports by default in Python 2 (see PEP 328)
-
 import math
 import optparse
 import os
 import re
 import sys
 import time
+import urllib.parse
+import urllib.request
 import xml.dom.minidom
 from xml.dom import Node, NotFoundErr
 from collections import namedtuple, defaultdict
 from decimal import Context, Decimal, InvalidOperation, getcontext
 
-import six
-from six.moves import range, urllib
 
 from scour.stats import ScourStats
 from scour.svg_regex import svg_parser
@@ -70,9 +65,9 @@ from scour.yocto_css import parseCssString
 from scour import __version__
 
 
-APP = u'scour'
+APP = 'scour'
 VER = __version__
-COPYRIGHT = u'Copyright Jeff Schiller, Louis Simard, 2010'
+COPYRIGHT = 'Copyright Jeff Schiller, Louis Simard, 2010'
 
 
 XML_ENTS_NO_QUOTES = {'<': '&lt;', '>': '&gt;', '&': '&amp;'}
@@ -425,7 +420,7 @@ sciExponent = re.compile(r"[eE]([-+]?\d+)")
 unit = re.compile("(em|ex|px|pt|pc|cm|mm|in|%){1,1}$")
 
 
-class Unit(object):
+class Unit:
     # Integer constants for units.
     INVALID = -1
     NONE = 0
@@ -487,7 +482,7 @@ class Unit(object):
     str = staticmethod(str)
 
 
-class SVGLength(object):
+class SVGLength:
 
     def __init__(self, str):
         try:  # simple unitless and no scientific notation
@@ -928,7 +923,7 @@ def protected_ids(seenIDs, options):
 
 
 def unprotected_ids(doc, options):
-    u"""Returns a list of unprotected IDs within the document doc."""
+    """Returns a list of unprotected IDs within the document doc."""
     identifiedElements = findElementsWithId(doc.documentElement)
     protectedIDs = protected_ids(identifiedElements, options)
     if protectedIDs:
@@ -1437,7 +1432,7 @@ def collapse_singly_referenced_gradients(doc, stats):
     identifiedElements = findElementsWithId(doc.documentElement)
 
     # make sure to reset the ref'ed ids for when we are running this in testscour
-    for rid, nodes in six.iteritems(findReferencedElements(doc.documentElement)):
+    for rid, nodes in findReferencedElements(doc.documentElement).items():
         # Make sure that there's actually a defining element for the current ID name.
         # (Cyn: I've seen documents with #id references but no element with that ID!)
         if len(nodes) == 1 and rid in identifiedElements:
@@ -1544,7 +1539,7 @@ def detect_duplicate_gradients(*grad_lists):
             key = computeGradientBucketKey(grad)
             grad_buckets[key].append(grad)
 
-        for bucket in six.itervalues(grad_buckets):
+        for bucket in grad_buckets.values():
             if len(bucket) < 2:
                 # The gradient must be unique if it is the only one in
                 # this bucket.
@@ -1649,7 +1644,7 @@ def removeDuplicateGradients(doc):
 
 
 def _getStyle(node):
-    u"""Returns the style attribute of a node as a dictionary."""
+    """Returns the style attribute of a node as a dictionary."""
     if node.nodeType != Node.ELEMENT_NODE:
         return {}
     style_attribute = node.getAttribute('style')
@@ -1666,7 +1661,7 @@ def _getStyle(node):
 
 
 def _setStyle(node, styleMap):
-    u"""Sets the style attribute of a node to the dictionary ``styleMap``."""
+    """Sets the style attribute of a node to the dictionary ``styleMap``."""
     fixedStyle = ';'.join(prop + ':' + styleMap[prop] for prop in styleMap)
     if fixedStyle != '':
         node.setAttribute('style', fixedStyle)
@@ -2094,12 +2089,12 @@ for default_attribute in default_attributes:
 
 
 def taint(taintedSet, taintedAttribute):
-    u"""Adds an attribute to a set of attributes.
+    """Adds an attribute to a set of attributes.
 
     Related attributes are also included."""
     taintedSet.add(taintedAttribute)
     if taintedAttribute == 'marker':
-        taintedSet |= set(['marker-start', 'marker-mid', 'marker-end'])
+        taintedSet |= {'marker-start', 'marker-mid', 'marker-end'}
     if taintedAttribute in ['marker-start', 'marker-mid', 'marker-end']:
         taintedSet.add('marker')
     return taintedSet
@@ -2135,7 +2130,7 @@ def removeDefaultAttributeValue(node, attribute):
 
 
 def removeDefaultAttributeValues(node, options, tainted=None):
-    u"""'tainted' keeps a set of attributes defined in parent nodes.
+    """'tainted' keeps a set of attributes defined in parent nodes.
 
     For such attributes, we don't delete attributes with default values."""
     num = 0
@@ -2203,14 +2198,14 @@ def convertColor(value):
         r = int(float(rgbpMatch.group(1)) * 255.0 / 100.0)
         g = int(float(rgbpMatch.group(2)) * 255.0 / 100.0)
         b = int(float(rgbpMatch.group(3)) * 255.0 / 100.0)
-        s = '#%02x%02x%02x' % (r, g, b)
+        s = '#{:02x}{:02x}{:02x}'.format(r, g, b)
     else:
         rgbMatch = rgb.match(s)
         if rgbMatch is not None:
             r = int(rgbMatch.group(1))
             g = int(rgbMatch.group(2))
             b = int(rgbMatch.group(3))
-            s = '#%02x%02x%02x' % (r, g, b)
+            s = '#{:02x}{:02x}{:02x}'.format(r, g, b)
 
     if s[0] == '#':
         s = s.lower()
@@ -2992,8 +2987,8 @@ def scourUnitlessLength(length, renderer_workaround=False, is_control_point=Fals
     # Gather the non-scientific notation version of the coordinate.
     # Re-quantize from the initial value to prevent unnecessary loss of precision
     # (e.g. 123.4 should become 123, not 120 or even 100)
-    nonsci = '{0:f}'.format(length)
+    nonsci = '{:f}'.format(length)
-    nonsci = '{0:f}'.format(initial_length.quantize(Decimal(nonsci)))
+    nonsci = '{:f}'.format(initial_length.quantize(Decimal(nonsci)))
     if not renderer_workaround:
         if len(nonsci) > 2 and nonsci[:2] == '0.':
             nonsci = nonsci[1:]  # remove the 0, leave the dot
@@ -3009,7 +3004,7 @@ def scourUnitlessLength(length, renderer_workaround=False, is_control_point=Fals
         exponent = length.adjusted()  # how far do we have to shift the dot?
         length = length.scaleb(-exponent).normalize()  # shift the dot and remove potential trailing zeroes
 
-        sci = six.text_type(length) + 'e' + six.text_type(exponent)
+        sci = str(length) + 'e' + str(exponent)
 
         if len(sci) < len(nonsci):
             return_value = sci
@@ -3410,7 +3405,7 @@ def properlySizeDoc(docElement, options):
             pass
 
     # at this point it's safe to set the viewBox and remove width/height
-    docElement.setAttribute('viewBox', '0 0 %s %s' % (w.value, h.value))
+    docElement.setAttribute('viewBox', '0 0 {} {}'.format(w.value, h.value))
     docElement.removeAttribute('width')
     docElement.removeAttribute('height')
 
@@ -3903,8 +3898,8 @@ class HeaderedFormatter(optparse.IndentedHelpFormatter):
     """
 
     def format_usage(self, usage):
-        return "%s %s\n%s\n%s" % (APP, VER, COPYRIGHT,
+        return "{} {}\n{}\n{}".format(APP, VER, COPYRIGHT,
-                                  optparse.IndentedHelpFormatter.format_usage(self, usage))
+                                      optparse.IndentedHelpFormatter.format_usage(self, usage))
 
 
 # GZ: would prefer this to be in a function or class scope, but tests etc need
@@ -4076,7 +4071,7 @@ def generateDefaultOptions():
 
 # sanitizes options by updating attributes in a set of defaults options while discarding unknown attributes
 def sanitizeOptions(options=None):
-    optionsDict = dict((key, getattr(options, key)) for key in dir(options) if not key.startswith('__'))
+    optionsDict = {key: getattr(options, key) for key in dir(options) if not key.startswith('__')}
 
     sanitizedOptions = _options_parser.get_default_values()
     sanitizedOptions._update_careful(optionsDict)

scour/stats.py

@@ -1,4 +1,4 @@
-class ScourStats(object):
+class ScourStats:
 
     __slots__ = (
         'num_elements_removed',

scour/svg_regex.py

@@ -41,7 +41,6 @@ Out[4]: [('M', [(0.60509999999999997, 0.5)])]
 In [5]: svg_parser.parse('M 100-200')  # Another edge case
 Out[5]: [('M', [(100.0, -200.0)])]
 """
-from __future__ import absolute_import
 
 import re
 from decimal import Decimal, getcontext
@@ -51,7 +50,7 @@ from functools import partial
 # Sentinel.
 
 
-class _EOF(object):
+class _EOF:
 
     def __repr__(self):
         return 'EOF'
@@ -66,7 +65,7 @@ lexicon = [
 ]
 
 
-class Lexer(object):
+class Lexer:
     """ Break SVG path data into tokens.
 
     The SVG spec requires that tokens are greedy. This lexer relies on Python's
@@ -81,7 +80,7 @@ class Lexer(object):
         self.lexicon = lexicon
         parts = []
         for name, regex in lexicon:
-            parts.append('(?P<%s>%s)' % (name, regex))
+            parts.append('(?P<{}>{})'.format(name, regex))
         self.regex_string = '|'.join(parts)
         self.regex = re.compile(self.regex_string)
 
@@ -103,7 +102,7 @@ class Lexer(object):
 svg_lexer = Lexer(lexicon)
 
 
-class SVGPathParser(object):
+class SVGPathParser:
     """ Parse SVG <path> data into a list of commands.
 
     Each distinct command will take the form of a tuple (command, data). The
@@ -163,7 +162,7 @@ class SVGPathParser(object):
         commands = []
         while token[0] is not EOF:
             if token[0] != 'command':
-                raise SyntaxError("expecting a command; got %r" % (token,))
+                raise SyntaxError("expecting a command; got {!r}".format(token))
             rule = self.command_dispatch[token[1]]
             command_group, token = rule(next_val_fn, token)
             commands.append(command_group)
@@ -232,23 +231,23 @@ class SVGPathParser(object):
         while token[0] in self.number_tokens:
             rx = Decimal(token[1]) * 1
             if rx < Decimal("0.0"):
-                raise SyntaxError("expecting a nonnegative number; got %r" % (token,))
+                raise SyntaxError("expecting a nonnegative number; got {!r}".format(token))
 
             token = next_val_fn()
             if token[0] not in self.number_tokens:
-                raise SyntaxError("expecting a number; got %r" % (token,))
+                raise SyntaxError("expecting a number; got {!r}".format(token))
             ry = Decimal(token[1]) * 1
             if ry < Decimal("0.0"):
-                raise SyntaxError("expecting a nonnegative number; got %r" % (token,))
+                raise SyntaxError("expecting a nonnegative number; got {!r}".format(token))
 
             token = next_val_fn()
             if token[0] not in self.number_tokens:
-                raise SyntaxError("expecting a number; got %r" % (token,))
+                raise SyntaxError("expecting a number; got {!r}".format(token))
             axis_rotation = Decimal(token[1]) * 1
 
             token = next_val_fn()
             if token[1][0] not in ('0', '1'):
-                raise SyntaxError("expecting a boolean flag; got %r" % (token,))
+                raise SyntaxError("expecting a boolean flag; got {!r}".format(token))
             large_arc_flag = Decimal(token[1][0]) * 1
 
             if len(token[1]) > 1:
@@ -257,7 +256,7 @@ class SVGPathParser(object):
             else:
                 token = next_val_fn()
             if token[1][0] not in ('0', '1'):
-                raise SyntaxError("expecting a boolean flag; got %r" % (token,))
+                raise SyntaxError("expecting a boolean flag; got {!r}".format(token))
             sweep_flag = Decimal(token[1][0]) * 1
 
             if len(token[1]) > 1:
@@ -266,12 +265,12 @@ class SVGPathParser(object):
             else:
                 token = next_val_fn()
             if token[0] not in self.number_tokens:
-                raise SyntaxError("expecting a number; got %r" % (token,))
+                raise SyntaxError("expecting a number; got {!r}".format(token))
             x = Decimal(token[1]) * 1
 
             token = next_val_fn()
             if token[0] not in self.number_tokens:
-                raise SyntaxError("expecting a number; got %r" % (token,))
+                raise SyntaxError("expecting a number; got {!r}".format(token))
             y = Decimal(token[1]) * 1
 
             token = next_val_fn()
@@ -281,7 +280,7 @@ class SVGPathParser(object):
 
     def rule_coordinate(self, next_val_fn, token):
         if token[0] not in self.number_tokens:
-            raise SyntaxError("expecting a number; got %r" % (token,))
+            raise SyntaxError("expecting a number; got {!r}".format(token))
         x = getcontext().create_decimal(token[1])
         token = next_val_fn()
         return x, token
@@ -289,11 +288,11 @@ class SVGPathParser(object):
     def rule_coordinate_pair(self, next_val_fn, token):
         # Inline these since this rule is so common.
         if token[0] not in self.number_tokens:
-            raise SyntaxError("expecting a number; got %r" % (token,))
+            raise SyntaxError("expecting a number; got {!r}".format(token))
         x = getcontext().create_decimal(token[1])
         token = next_val_fn()
         if token[0] not in self.number_tokens:
-            raise SyntaxError("expecting a number; got %r" % (token,))
+            raise SyntaxError("expecting a number; got {!r}".format(token))
         y = getcontext().create_decimal(token[1])
         token = next_val_fn()
         return [x, y], token

scour/svg_transform.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 #  SVG transformation list parser
 #
@@ -56,17 +55,14 @@ Multiple transformations are supported:
 In [12]: svg_transform_parser.parse('translate(30 -30) rotate(36)')
 Out[12]: [('translate', [30.0, -30.0]), ('rotate', [36.0])]
 """
-from __future__ import absolute_import
 
 import re
 from decimal import Decimal
 from functools import partial
 
-from six.moves import range
-
 
 # Sentinel.
-class _EOF(object):
+class _EOF:
 
     def __repr__(self):
         return 'EOF'
@@ -83,7 +79,7 @@ lexicon = [
 ]
 
 
-class Lexer(object):
+class Lexer:
     """ Break SVG path data into tokens.
 
     The SVG spec requires that tokens are greedy. This lexer relies on Python's
@@ -98,7 +94,7 @@ class Lexer(object):
         self.lexicon = lexicon
         parts = []
         for name, regex in lexicon:
-            parts.append('(?P<%s>%s)' % (name, regex))
+            parts.append('(?P<{}>{})'.format(name, regex))
         self.regex_string = '|'.join(parts)
         self.regex = re.compile(self.regex_string)
 
@@ -120,7 +116,7 @@ class Lexer(object):
 svg_lexer = Lexer(lexicon)
 
 
-class SVGTransformationParser(object):
+class SVGTransformationParser:
     """ Parse SVG transform="" data into a list of commands.
 
     Each distinct command will take the form of a tuple (type, data). The
@@ -166,15 +162,15 @@ class SVGTransformationParser(object):
 
     def rule_svg_transform(self, next_val_fn, token):
         if token[0] != 'command':
-            raise SyntaxError("expecting a transformation type; got %r" % (token,))
+            raise SyntaxError("expecting a transformation type; got {!r}".format(token))
         command = token[1]
         rule = self.command_dispatch[command]
         token = next_val_fn()
         if token[0] != 'coordstart':
-            raise SyntaxError("expecting '('; got %r" % (token,))
+            raise SyntaxError("expecting '('; got {!r}".format(token))
         numbers, token = rule(next_val_fn, token)
         if token[0] != 'coordend':
-            raise SyntaxError("expecting ')'; got %r" % (token,))
+            raise SyntaxError("expecting ')'; got {!r}".format(token))
         token = next_val_fn()
         return (command, numbers), token
 
@@ -227,7 +223,7 @@ class SVGTransformationParser(object):
 
     def rule_number(self, next_val_fn, token):
         if token[0] not in self.number_tokens:
-            raise SyntaxError("expecting a number; got %r" % (token,))
+            raise SyntaxError("expecting a number; got {!r}".format(token))
         x = Decimal(token[1]) * 1
         token = next_val_fn()
         return x, token

scour/yocto_css.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 #  yocto-css, an extremely bare minimum CSS parser
 #

setup.py

@@ -44,13 +44,13 @@ Authors:
 """
 
 VERSIONFILE = os.path.join(os.path.dirname(os.path.realpath(__file__)), "scour", "__init__.py")
-verstrline = open(VERSIONFILE, "rt").read()
+verstrline = open(VERSIONFILE).read()
-VSRE = r"^__version__ = u['\"]([^'\"]*)['\"]"
+VSRE = r"^__version__ = ['\"]([^'\"]*)['\"]"
 mo = re.search(VSRE, verstrline, re.M)
 if mo:
     verstr = mo.group(1)
 else:
-    raise RuntimeError("Unable to find version string in %s." % (VERSIONFILE,))
+    raise RuntimeError("Unable to find version string in {}.".format(VERSIONFILE))
 
 
 setup(
@@ -64,7 +64,7 @@ setup(
     author_email='codedread@gmail.com',
     url='https://github.com/scour-project/scour',
     platforms=('Any'),
-    install_requires=['six>=1.9.0'],
+    install_requires=[],
     packages=find_packages(),
     zip_safe=True,
     entry_points={

test_css.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 #  Test Harness for Scour
 #
@@ -19,7 +18,6 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
-from __future__ import absolute_import
 
 import unittest
 

test_scour.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 #  Test Harness for Scour
 #
@@ -20,16 +19,12 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
-from __future__ import print_function   # use print() as a function in Python 2 (see PEP 3105)
-from __future__ import absolute_import  # use absolute imports by default in Python 2 (see PEP 328)
 
+import io
 import os
 import sys
 import unittest
 
-import six
-from six.moves import map, range
-
 from scour.scour import (make_well_formed, parse_args, scourString, scourXmlFile, start, run,
                          XML_ENTS_ESCAPE_APOS, XML_ENTS_ESCAPE_QUOT)
 from scour.svg_regex import svg_parser
@@ -1149,30 +1144,30 @@ class HandleEncodingUTF8(unittest.TestCase):
 
     def runTest(self):
         doc = scourXmlFile('unittests/encoding-utf8.svg')
-        text = u'Hello in many languages:\n' \
+        text = 'Hello in many languages:\n' \
-               u'ar: أهلا\n' \
+               'ar: أهلا\n' \
-               u'bn: হ্যালো\n' \
+               'bn: হ্যালো\n' \
-               u'el: Χαίρετε\n' \
+               'el: Χαίρετε\n' \
-               u'en: Hello\n' \
+               'en: Hello\n' \
-               u'hi: नमस्ते\n' \
+               'hi: नमस्ते\n' \
-               u'iw: שלום\n' \
+               'iw: שלום\n' \
-               u'ja: こんにちは\n' \
+               'ja: こんにちは\n' \
-               u'km: ជំរាបសួរ\n' \
+               'km: ជំរាបសួរ\n' \
-               u'ml: ഹലോ\n' \
+               'ml: ഹലോ\n' \
-               u'ru: Здравствуйте\n' \
+               'ru: Здравствуйте\n' \
-               u'ur: ہیلو\n' \
+               'ur: ہیلو\n' \
-               u'zh: 您好'
+               'zh: 您好'
-        desc = six.text_type(doc.getElementsByTagNameNS(SVGNS, 'desc')[0].firstChild.wholeText).strip()
+        desc = str(doc.getElementsByTagNameNS(SVGNS, 'desc')[0].firstChild.wholeText).strip()
         self.assertEqual(desc, text,
                          'Did not handle international UTF8 characters')
-        desc = six.text_type(doc.getElementsByTagNameNS(SVGNS, 'desc')[1].firstChild.wholeText).strip()
+        desc = str(doc.getElementsByTagNameNS(SVGNS, 'desc')[1].firstChild.wholeText).strip()
-        self.assertEqual(desc, u'“”‘’–—…‐‒°©®™•½¼¾⅓⅔†‡µ¢£€«»♠♣♥♦¿<EFBFBD>',
+        self.assertEqual(desc, '“”‘’–—…‐‒°©®™•½¼¾⅓⅔†‡µ¢£€«»♠♣♥♦¿<EFBFBD>',
                          'Did not handle common UTF8 characters')
-        desc = six.text_type(doc.getElementsByTagNameNS(SVGNS, 'desc')[2].firstChild.wholeText).strip()
+        desc = str(doc.getElementsByTagNameNS(SVGNS, 'desc')[2].firstChild.wholeText).strip()
-        self.assertEqual(desc, u':-×÷±∞π∅≤≥≠≈∧∨∩∪∈∀∃∄∑∏←↑→↓↔↕↖↗↘↙↺↻⇒⇔',
+        self.assertEqual(desc, ':-×÷±∞π∅≤≥≠≈∧∨∩∪∈∀∃∄∑∏←↑→↓↔↕↖↗↘↙↺↻⇒⇔',
                          'Did not handle mathematical UTF8 characters')
-        desc = six.text_type(doc.getElementsByTagNameNS(SVGNS, 'desc')[3].firstChild.wholeText).strip()
+        desc = str(doc.getElementsByTagNameNS(SVGNS, 'desc')[3].firstChild.wholeText).strip()
-        self.assertEqual(desc, u'⁰¹²³⁴⁵⁶⁷⁸⁹⁺⁻⁽⁾ⁿⁱ₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎',
+        self.assertEqual(desc, '⁰¹²³⁴⁵⁶⁷⁸⁹⁺⁻⁽⁾ⁿⁱ₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎',
                          'Did not handle superscript/subscript UTF8 characters')
 
 
@@ -1180,8 +1175,8 @@ class HandleEncodingISO_8859_15(unittest.TestCase):
 
     def runTest(self):
         doc = scourXmlFile('unittests/encoding-iso-8859-15.svg')
-        desc = six.text_type(doc.getElementsByTagNameNS(SVGNS, 'desc')[0].firstChild.wholeText).strip()
+        desc = str(doc.getElementsByTagNameNS(SVGNS, 'desc')[0].firstChild.wholeText).strip()
-        self.assertEqual(desc, u'áèîäöü߀ŠšŽžŒœŸ', 'Did not handle ISO 8859-15 encoded characters')
+        self.assertEqual(desc, 'áèîäöü߀ŠšŽžŒœŸ', 'Did not handle ISO 8859-15 encoded characters')
 
 
 class HandleSciNoInPathData(unittest.TestCase):
@@ -2231,7 +2226,7 @@ class PathCommandRewrites(unittest.TestCase):
             expected_path, message = expected_paths[i]
             self.assertEqual(actual_path,
                              expected_path,
-                             '%s: "%s" != "%s"' % (message, actual_path, expected_path))
+                             '{}: "{}" != "{}"'.format(message, actual_path, expected_path))
 
 
 class DefaultsRemovalToplevel(unittest.TestCase):
@@ -2553,7 +2548,7 @@ class CommandLineUsage(unittest.TestCase):
     #     stdout: a string representing the combined output to 'stdout'
     #     stderr: a string representing the combined output to 'stderr'
     def _run_scour(self):
-        class Result(object):
+        class Result:
             pass
 
         result = Result()
@@ -2581,12 +2576,12 @@ class CommandLineUsage(unittest.TestCase):
         # TODO: can we create file objects that behave *exactly* like the original?
         #       this is a mess since we have to ensure compatibility across Python 2 and 3 and it seems impossible
         #       to replicate all the details of 'stdin', 'stdout' and 'stderr'
-        class InOutBuffer(six.StringIO, object):
+        class InOutBuffer(io.StringIO):
             def write(self, string):
                 try:
-                    return super(InOutBuffer, self).write(string)
+                    return super().write(string)
                 except TypeError:
-                    return super(InOutBuffer, self).write(string.decode())
+                    return super().write(string.decode())
 
         sys.stdin = self.temp_stdin = InOutBuffer()
         sys.stdout = self.temp_stdout = InOutBuffer()
@@ -2740,7 +2735,7 @@ class EmbedRasters(unittest.TestCase):
                             "Raster image from local path '" + href + "' not embedded.")
 
     def test_raster_paths_local_absolute(self):
-        with open('unittests/raster-formats.svg', 'r') as f:
+        with open('unittests/raster-formats.svg') as f:
             svg = f.read()
 
         # create a reference string by scouring the original file with relative links

tox.ini

@@ -1,7 +1,6 @@
 [tox]
 envlist =
     pypy
-    py27
     py34
     py35
     py36
@@ -15,7 +14,6 @@ envlist =
 
 [testenv]
 deps =
-    six
     coverage
 
 commands =