introduce the six module and reduce sphinx.util.pycompat implementation. refs #1350.

setup.py

@@ -45,7 +45,7 @@ if sys.version_info < (2, 6) or (3, 0) <= sys.version_info < (3, 2):
     print('ERROR: Sphinx requires at least Python 2.6 or 3.2 to run.')
     sys.exit(1)
 
-requires = ['Pygments>=1.2', 'docutils>=0.10', 'snowballstemmer>=1.1']
+requires = ['six', 'Pygments>=1.2', 'docutils>=0.10', 'snowballstemmer>=1.1']
 
 if (3, 0) <= sys.version_info < (3, 3):
     requires.append('Jinja2>=2.3,<2.7')

sphinx/application.py

@@ -18,8 +18,8 @@ import types
 import posixpath
 import traceback
 from os import path
-from cStringIO import StringIO
 
+import six
 from docutils import nodes
 from docutils.parsers.rst import convert_directive_function, \
      directives, roles
@@ -84,14 +84,14 @@ class Sphinx(object):
         self.parallel = parallel
 
         if status is None:
-            self._status = StringIO()
+            self._status = six.cStringIO()
             self.quiet = True
         else:
             self._status = status
             self.quiet = False
 
         if warning is None:
-            self._warning = StringIO()
+            self._warning = six.cStringIO()
         else:
             self._warning = warning
         self._warncount = 0

sphinx/cmdline.py

@@ -16,6 +16,7 @@ import getopt
 import traceback
 from os import path
 
+import six
 from docutils.utils import SystemMessage
 
 from sphinx import __version__
@@ -24,7 +25,7 @@ from sphinx.application import Sphinx
 from sphinx.util import Tee, format_exception_cut_frames, save_traceback
 from sphinx.util.console import red, nocolor, color_terminal
 from sphinx.util.osutil import abspath, fs_encoding
-from sphinx.util.pycompat import terminal_safe, bytes
+from sphinx.util.pycompat import terminal_safe
 
 
 def usage(argv, msg=None):
@@ -183,7 +184,7 @@ def main(argv):
                 print('Error: -D option argument must be in the form name=value.',
                       file=sys.stderr)
                 return 1
-            if likely_encoding and isinstance(val, bytes):
+            if likely_encoding and isinstance(val, six.binary_type):
                 try:
                     val = val.decode(likely_encoding)
                 except UnicodeError:
@@ -199,7 +200,7 @@ def main(argv):
             try:
                 val = int(val)
             except ValueError:
-                if likely_encoding and isinstance(val, bytes):
+                if likely_encoding and isinstance(val, six.binary_type):
                     try:
                         val = val.decode(likely_encoding)
                     except UnicodeError:

sphinx/config.py

@@ -11,18 +11,19 @@
 
 import os
 import re
-import sys
 from os import path
 
+import six
+
 from sphinx.errors import ConfigError
 from sphinx.locale import l_
 from sphinx.util.osutil import make_filename
-from sphinx.util.pycompat import bytes, b, execfile_
+from sphinx.util.pycompat import b, execfile_
 
 nonascii_re = re.compile(b(r'[\x80-\xff]'))
 
 CONFIG_SYNTAX_ERROR = "There is a syntax error in your configuration file: %s"
-if sys.version_info >= (3, 0):
+if six.PY3:
     CONFIG_SYNTAX_ERROR += "\nDid you change the syntax from 2.x to 3.x?"
 
 class Config(object):
@@ -243,7 +244,7 @@ class Config(object):
         # check all string values for non-ASCII characters in bytestrings,
         # since that can result in UnicodeErrors all over the place
         for name, value in self._raw_config.iteritems():
-            if isinstance(value, bytes) and nonascii_re.search(value):
+            if isinstance(value, six.binary_type) and nonascii_re.search(value):
                 warn('the config value %r is set to a string with non-ASCII '
                      'characters; this can lead to Unicode errors occurring. '
                      'Please use Unicode strings, e.g. %r.' % (name, u'Content')

sphinx/environment.py

@@ -23,6 +23,7 @@ from os import path
 from glob import glob
 from itertools import izip, groupby
 
+import six
 from docutils import nodes
 from docutils.io import FileInput, NullOutput
 from docutils.core import Publisher
@@ -39,7 +40,6 @@ from sphinx.util import url_re, get_matching_docs, docname_join, split_into, \
 from sphinx.util.nodes import clean_astext, make_refnode, WarningStream
 from sphinx.util.osutil import SEP, fs_encoding, find_catalog_files
 from sphinx.util.matching import compile_matchers
-from sphinx.util.pycompat import class_types
 from sphinx.util.websupport import is_commentable
 from sphinx.errors import SphinxError, ExtensionError
 from sphinx.locale import _
@@ -140,7 +140,7 @@ class BuildEnvironment:
             if key.startswith('_') or \
                    isinstance(val, types.ModuleType) or \
                    isinstance(val, types.FunctionType) or \
-                   isinstance(val, class_types):
+                   isinstance(val, six.class_types):
                 del self.config[key]
         try:
             pickle.dump(self, picklefile, pickle.HIGHEST_PROTOCOL)

sphinx/ext/autodoc.py

@@ -17,6 +17,7 @@ import inspect
 import traceback
 from types import FunctionType, BuiltinFunctionType, MethodType
 
+import six
 from docutils import nodes
 from docutils.utils import assemble_option_dict
 from docutils.statemachine import ViewList
@@ -29,7 +30,6 @@ from sphinx.util.nodes import nested_parse_with_titles
 from sphinx.util.compat import Directive
 from sphinx.util.inspect import getargspec, isdescriptor, safe_getmembers, \
      safe_getattr, safe_repr, is_builtin_class_method
-from sphinx.util.pycompat import class_types
 from sphinx.util.docstrings import prepare_docstring
 
 
@@ -1028,7 +1028,7 @@ class ClassDocumenter(ModuleLevelDocumenter):
 
     @classmethod
     def can_document_member(cls, member, membername, isattr, parent):
-        return isinstance(member, class_types)
+        return isinstance(member, six.class_types)
 
     def import_object(self):
         ret = ModuleLevelDocumenter.import_object(self)
@@ -1162,7 +1162,7 @@ class ExceptionDocumenter(ClassDocumenter):
 
     @classmethod
     def can_document_member(cls, member, membername, isattr, parent):
-        return isinstance(member, class_types) and \
+        return isinstance(member, six.class_types) and \
                issubclass(member, BaseException)
 
 
@@ -1212,7 +1212,7 @@ class MethodDocumenter(DocstringSignatureMixin, ClassLevelDocumenter):
         return inspect.isroutine(member) and \
                not isinstance(parent, ModuleDocumenter)
 
-    if sys.version_info >= (3, 0):
+    if six.PY3:
         def import_object(self):
             ret = ClassLevelDocumenter.import_object(self)
             obj_from_parent = self.parent.__dict__.get(self.object_name)
@@ -1282,7 +1282,7 @@ class AttributeDocumenter(ClassLevelDocumenter):
                                                "instancemethod")
         return isdatadesc or (not isinstance(parent, ModuleDocumenter)
                               and not inspect.isroutine(member)
-                              and not isinstance(member, class_types))
+                              and not isinstance(member, six.class_types))
 
     def document_members(self, all_members=False):
         pass

sphinx/ext/doctest.py

@@ -14,11 +14,11 @@ import re
 import sys
 import time
 import codecs
-import StringIO
 from os import path
 # circumvent relative import
 doctest = __import__('doctest')
 
+import six
 from docutils import nodes
 from docutils.parsers.rst import directives
 
@@ -27,7 +27,6 @@ from sphinx.util import force_decode
 from sphinx.util.nodes import set_source_info
 from sphinx.util.compat import Directive
 from sphinx.util.console import bold
-from sphinx.util.pycompat import bytes
 
 blankline_re = re.compile(r'^\s*<BLANKLINE>', re.MULTILINE)
 doctestopt_re = re.compile(r'#\s*doctest:.+$', re.MULTILINE)
@@ -158,7 +157,7 @@ class TestCode(object):
 
 class SphinxDocTestRunner(doctest.DocTestRunner):
     def summarize(self, out, verbose=None):
-        string_io = StringIO.StringIO()
+        string_io = six.StringIO()
         old_stdout = sys.stdout
         sys.stdout = string_io
         try:
@@ -233,7 +232,7 @@ Results of doctest builder run on %s
         self.info(text, nonl=True)
         if self.app.quiet:
             self.warn(text)
-        if isinstance(text, bytes):
+        if isinstance(text, six.binary_type):
             text = force_decode(text, None)
         self.outfile.write(text)
 

sphinx/ext/napoleon/__init__.py

@@ -10,6 +10,9 @@
 """
 
 import sys
+
+import six
+
 from sphinx.ext.napoleon.docstring import GoogleDocstring, NumpyDocstring
 
 
@@ -346,12 +349,12 @@ def _skip_member(app, what, name, obj, skip, options):
     if name != '__weakref__' and name != '__init__' and has_doc and is_member:
         cls_is_owner = False
         if what == 'class' or what == 'exception':
-            if sys.version_info[0] < 3:
+            if six.PY2:
                 cls = getattr(obj, 'im_class', getattr(obj, '__objclass__',
                               None))
                 cls_is_owner = (cls and hasattr(cls, name) and
                                 name in cls.__dict__)
-            elif sys.version_info[1] >= 3:
+            elif sys.version_info >= (3, 3):
                 qualname = getattr(obj, '__qualname__', '')
                 cls_path, _, _ = qualname.rpartition('.')
                 if cls_path:

sphinx/ext/napoleon/docstring.py

@@ -14,11 +14,13 @@
 import collections
 import inspect
 import re
-import sys
+
+import six
+
 from sphinx.ext.napoleon.iterators import modify_iter
 
 
-if sys.version_info[0] >= 3:
+if six.PY3:
     basestring = str
     xrange = range
 
@@ -160,7 +162,7 @@ class GoogleDocstring(object):
             UTF-8 encoded version of the docstring.
 
         """
-        if sys.version_info[0] >= 3:
+        if six.PY3:
             return self.__unicode__()
         else:
             return self.__unicode__().encode('utf8')

sphinx/ext/napoleon/iterators.py

@@ -12,10 +12,11 @@
 """
 
 import collections
-import sys
+
+import six
 
 
-if sys.version_info[0] >= 3:
+if six.PY3:
     callable = lambda o: hasattr(o, '__call__')
 
 

sphinx/highlighting.py

@@ -9,7 +9,6 @@
     :license: BSD, see LICENSE for details.
 """
 
-import sys
 import re
 import textwrap
 
@@ -19,6 +18,8 @@ except ImportError:
     # parser is not available on Jython
     parser = None
 
+import six
+
 from sphinx.util.pycompat import htmlescape
 from sphinx.util.texescape import tex_hl_escape_map_new
 from sphinx.ext import doctest
@@ -131,7 +132,7 @@ class PygmentsBridge(object):
         # lines beginning with "..." are probably placeholders for suite
         src = re.sub(r"(?m)^(\s*)" + mark + "(.)", r"\1"+ mark + r"# \2", src)
 
-        if sys.version_info < (3, 0) and isinstance(src, unicode):
+        if six.PY2 and isinstance(src, unicode):
             # Non-ASCII chars will only occur in string literals
             # and comments.  If we wanted to give them to the parser
             # correctly, we'd have to find out the correct source

sphinx/locale/__init__.py

@@ -9,10 +9,11 @@
     :license: BSD, see LICENSE for details.
 """
 
-import sys
 import gettext
 import UserString
 
+import six
+
 
 class _TranslationProxy(UserString.UserString, object):
     """
@@ -183,7 +184,7 @@ pairindextypes = {
 
 translators = {}
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     def _(message):
         return translators['sphinx'].gettext(message)
 else:

sphinx/pycode/__init__.py

@@ -13,12 +13,14 @@ from __future__ import print_function
 import sys
 from os import path
 
+import six
+
 from sphinx import package_dir
 from sphinx.errors import PycodeError
 from sphinx.pycode import nodes
 from sphinx.pycode.pgen2 import driver, token, tokenize, parse, literals
 from sphinx.util import get_module_source, detect_encoding
-from sphinx.util.pycompat import StringIO, BytesIO, TextIOWrapper
+from sphinx.util.pycompat import TextIOWrapper
 from sphinx.util.docstrings import prepare_docstring, prepare_commentdoc
 
 
@@ -174,8 +176,8 @@ class ModuleAnalyzer(object):
     @classmethod
     def for_string(cls, string, modname, srcname='<string>'):
         if isinstance(string, bytes):
-            return cls(BytesIO(string), modname, srcname)
-        return cls(StringIO(string), modname, srcname, decoded=True)
+            return cls(six.BytesIO(string), modname, srcname)
+        return cls(six.StringIO(string), modname, srcname, decoded=True)
 
     @classmethod
     def for_file(cls, filename, modname):

sphinx/quickstart.py

@@ -16,6 +16,8 @@ from io import open
 
 TERM_ENCODING = getattr(sys.stdin, 'encoding', None)
 
+import six
+
 #try to import readline, unix specific enhancement
 try:
     import readline
@@ -44,7 +46,7 @@ except NameError:
 
 PROMPT_PREFIX = '> '
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     # prevents that the file is checked for being written in Python 2.x syntax
     QUICKSTART_CONF = u'#!/usr/bin/env python3\n'
 else:
@@ -997,7 +999,7 @@ def do_prompt(d, key, text, default=None, validator=nonempty):
             prompt = PROMPT_PREFIX + '%s [%s]: ' % (text, default)
         else:
             prompt = PROMPT_PREFIX + text + ': '
-        if sys.version_info < (3, 0):
+        if six.PY2:
             # for Python 2.x, try to get a Unicode string out of it
             if prompt.encode('ascii', 'replace').decode('ascii', 'replace') \
                     != prompt:
@@ -1037,7 +1039,7 @@ def do_prompt(d, key, text, default=None, validator=nonempty):
     d[key] = x
 
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     # remove Unicode literal prefixes
     def _convert_python_source(source, rex=re.compile(r"[uU]('.*?')")):
         return rex.sub('\\1', source)

sphinx/setup_command.py

@@ -16,10 +16,11 @@ from __future__ import print_function
 import sys
 import os
 import types
-from StringIO import StringIO
 from distutils.cmd import Command
 from distutils.errors import DistutilsOptionError
 
+import six
+
 from sphinx.application import Sphinx
 from sphinx.util.console import darkred, nocolor, color_terminal
 from sphinx.util.osutil import abspath
@@ -141,7 +142,7 @@ class BuildDoc(Command):
             # Windows' poor cmd box doesn't understand ANSI sequences
             nocolor()
         if not self.verbose:
-            status_stream = StringIO()
+            status_stream = six.StringIO()
         else:
             status_stream = sys.stdout
         confoverrides = {}

sphinx/util/__init__.py

@@ -12,7 +12,6 @@
 import os
 import re
 import sys
-import shutil
 import fnmatch
 import tempfile
 import posixpath
@@ -22,6 +21,7 @@ from os import path
 from codecs import open, BOM_UTF8
 from collections import deque
 
+import six
 import docutils
 from docutils.utils import relative_path
 
@@ -29,7 +29,6 @@ import jinja2
 
 import sphinx
 from sphinx.errors import PycodeError
-from sphinx.util.pycompat import bytes
 
 # import other utilities; partly for backwards compatibility, so don't
 # prune unused ones indiscriminately
@@ -336,7 +335,7 @@ def parselinenos(spec, total):
 
 def force_decode(string, encoding):
     """Forcibly get a unicode string out of a bytestring."""
-    if isinstance(string, bytes):
+    if isinstance(string, six.binary_type):
         try:
             if encoding:
                 string = string.decode(encoding)

sphinx/util/inspect.py

@@ -9,17 +9,16 @@
     :license: BSD, see LICENSE for details.
 """
 
-import sys
-
 # this imports the standard library inspect module without resorting to
 # relatively import this module
 inspect = __import__('inspect')
 
+import six
+
 from sphinx.util import force_decode
-from sphinx.util.pycompat import bytes, builtins
 
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     from functools import partial
     def getargspec(func):
         """Like inspect.getargspec but supports functools.partial as well."""
@@ -129,7 +128,7 @@ def safe_repr(object):
         s = repr(object)
     except Exception:
         raise ValueError
-    if isinstance(s, bytes):
+    if isinstance(s, six.binary_type):
         return force_decode(s, None).replace('\n', ' ')
     return s.replace('\n', ' ')
 
@@ -146,6 +145,6 @@ def is_builtin_class_method(obj, attr_name):
     classes = [c for c in inspect.getmro(obj) if attr_name in c.__dict__]
     cls = classes[0] if classes else object
 
-    if not hasattr(builtins, safe_getattr(cls, '__name__', '')):
+    if not hasattr(six.moves.builtins, safe_getattr(cls, '__name__', '')):
         return False
-    return getattr(builtins, safe_getattr(cls, '__name__', '')) is cls
+    return getattr(six.moves.builtins, safe_getattr(cls, '__name__', '')) is cls

sphinx/util/osutil.py

@@ -20,6 +20,8 @@ import shutil
 import gettext
 from os import path
 
+import six
+
 # Errnos that we need.
 EEXIST = getattr(errno, 'EEXIST', 0)
 ENOENT = getattr(errno, 'ENOENT', 0)
@@ -147,7 +149,7 @@ no_fn_re = re.compile(r'[^a-zA-Z0-9_-]')
 def make_filename(string):
     return no_fn_re.sub('', string) or 'sphinx'
 
-if sys.version_info < (3, 0):
+if six.PY2:
     # strftime for unicode strings
     def ustrftime(format, *args):
         # if a locale is set, the time strings are encoded in the encoding
@@ -187,7 +189,7 @@ def find_catalog_files(docname, srcdir, locale_dirs, lang, compaction):
 fs_encoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
 
 
-if sys.version_info < (3, 0):
+if six.PY2:
     bytes = str
 else:
     bytes = bytes

sphinx/util/pycompat.py

@@ -12,20 +12,19 @@
 import sys
 import codecs
 
+import six
+
 # ------------------------------------------------------------------------------
 # Python 2/3 compatibility
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     # Python 3
-    class_types = (type,)
     # the ubiquitous "bytes" helper functions
     def b(s):
         return s.encode('utf-8')
-    bytes = bytes
     # prefix for Unicode strings
     u = ''
-    # StringIO/BytesIO classes
-    from io import StringIO, BytesIO, TextIOWrapper
+    from io import TextIOWrapper
     # safely encode a string for printing to the terminal
     def terminal_safe(s):
         return s.encode('ascii', 'backslashreplace').decode('ascii')
@@ -47,18 +46,12 @@ if sys.version_info >= (3, 0):
             # try to match ParseError details with SyntaxError details
             raise SyntaxError(err.msg, (filepath, lineno, offset, err.value))
         return unicode(tree)
-    from itertools import zip_longest  # Python 3 name
-    import builtins
+    from html import escape as htmlescape  # >= Python 3.2
 
 else:
     # Python 2
-    from types import ClassType
-    class_types = (type, ClassType)
     b = str
-    bytes = str
     u = 'u'
-    from StringIO import StringIO
-    BytesIO = StringIO
     # no need to refactor on 2.x versions
     convert_with_2to3 = None
     def TextIOWrapper(stream, encoding):
@@ -68,11 +61,9 @@ else:
         return s.encode('ascii', 'backslashreplace')
     # some kind of default system encoding; should be used with a lenient
     # error handler
-    import locale
-    sys_encoding = locale.getpreferredencoding()
+    sys_encoding = __import__('locale').getpreferredencoding()
     # use Python 3 name
-    from itertools import izip_longest as zip_longest
-    import __builtin__ as builtins
+    from cgi import escape as htmlescape  # 2.6, 2.7
 
 
 def execfile_(filepath, _globals):
@@ -101,10 +92,4 @@ def execfile_(filepath, _globals):
             code = compile(source, filepath_enc, 'exec')
         else:
             raise
-    exec code in _globals
-
-
-if sys.version_info >= (3, 2):
-    from html import escape as htmlescape  # >= Python 3.2
-else:  # 2.6, 2.7, 3.1
-    from cgi import escape as htmlescape
+    six.exec_(code, _globals)

sphinx/versioning.py

@@ -13,7 +13,7 @@ from uuid import uuid4
 from operator import itemgetter
 from itertools import product
 
-from sphinx.util.pycompat import zip_longest
+import six
 
 
 # anything below that ratio is considered equal/changed
@@ -52,7 +52,7 @@ def merge_doctrees(old, new, condition):
     ratios = {}
     seen = set()
     # compare the nodes each doctree in order
-    for old_node, new_node in zip_longest(old_iter, new_iter):
+    for old_node, new_node in six.moves.zip_longest(old_iter, new_iter):
         if old_node is None:
             new_nodes.append(new_node)
             continue

tests/path.py

@@ -12,6 +12,8 @@ import sys
 import shutil
 from codecs import open
 
+import six
+
 
 FILESYSTEMENCODING = sys.getfilesystemencoding() or sys.getdefaultencoding()
 
@@ -20,7 +22,7 @@ class path(unicode):
     """
     Represents a path which behaves like a string.
     """
-    if sys.version_info < (3, 0):
+    if six.PY2:
         def __new__(cls, s, encoding=FILESYSTEMENCODING, errors='strict'):
             if isinstance(s, str):
                 s = s.decode(encoding, errors)

tests/roots/test-autosummary/contents.rst

@@ -1,6 +1,6 @@
-
-.. autosummary::
-   :nosignatures:
-   :toctree:
-
-   dummy_module
+
+.. autosummary::
+   :nosignatures:
+   :toctree:
+   
+   dummy_module

tests/run.py

@@ -15,6 +15,9 @@ import sys
 from os import path, chdir, listdir, environ
 import shutil
 
+import six
+
+
 testroot = path.dirname(__file__) or '.'
 if 'BUILD_TEST_PATH' in environ:
     # for tox testing
@@ -26,7 +29,7 @@ else:
 
 shutil.rmtree(newroot, ignore_errors=True)
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     print('Copying and converting sources to build/lib/tests...')
     from distutils.util import copydir_run_2to3
     copydir_run_2to3(testroot, newroot)

tests/test_application.py

@@ -9,9 +9,9 @@
     :license: BSD, see LICENSE for details.
 """
 
-from StringIO import StringIO
-
+import six
 from docutils import nodes
+
 from sphinx.application import ExtensionError
 from sphinx.domains import Domain
 
@@ -49,7 +49,7 @@ def test_emit_with_nonascii_name_node(app):
 
 
 def test_output():
-    status, warnings = StringIO(), StringIO()
+    status, warnings = six.StringIO(), six.StringIO()
     app = TestApp(status=status, warning=warnings)
     try:
         status.truncate(0) # __init__ writes to status
@@ -70,7 +70,7 @@ def test_output():
 
 
 def test_extensions():
-    status, warnings = StringIO(), StringIO()
+    status, warnings = six.StringIO(), six.StringIO()
     app = TestApp(status=status, warning=warnings)
     try:
         app.setup_extension('shutil')
@@ -85,7 +85,7 @@ def test_domain_override():
         name = 'foo'
     class C(Domain):
         name = 'foo'
-    status, warnings = StringIO(), StringIO()
+    status, warnings = six.StringIO(), six.StringIO()
     app = TestApp(status=status, warning=warnings)
     try:
         # No domain know named foo.

tests/test_autodoc.py

@@ -10,13 +10,11 @@
     :license: BSD, see LICENSE for details.
 """
 
-import sys
-from StringIO import StringIO
-
 # "raises" imported for usage by autodoc
 from util import TestApp, Struct, raises
 from nose.tools import with_setup
 
+import six
 from docutils.statemachine import ViewList
 
 from sphinx.ext.autodoc import AutoDirective, add_documenter, \
@@ -811,7 +809,7 @@ class Class(Base):
     u"""should be documented as well - süß"""
 
     # initialized to any class imported from another module
-    mdocattr = StringIO()
+    mdocattr = six.StringIO()
     """should be documented as well - süß"""
 
     roger = _funky_classmethod("roger", 2, 3, 4)

tests/test_build_html.py

@@ -11,9 +11,9 @@
 
 import os
 import re
-import sys
 import htmlentitydefs
-from StringIO import StringIO
+
+import six
 
 try:
     import pygments
@@ -29,7 +29,7 @@ def teardown_module():
     (test_root / '_build').rmtree(True)
 
 
-html_warnfile = StringIO()
+html_warnfile = six.StringIO()
 
 ENV_WARNINGS = """\
 %(root)s/autodoc_fodder.py:docstring of autodoc_fodder\\.MarkupError:2: \
@@ -54,7 +54,7 @@ None:\\d+: WARNING: citation not found: missing
 %(root)s/markup.txt:: WARNING: invalid pair index entry u'keyword; '
 """
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     ENV_WARNINGS = remove_unicode_literals(ENV_WARNINGS)
     HTML_WARNINGS = remove_unicode_literals(HTML_WARNINGS)
 

tests/test_build_latex.py

@@ -12,10 +12,10 @@ from __future__ import print_function
 
 import os
 import re
-import sys
-from StringIO import StringIO
 from subprocess import Popen, PIPE
 
+import six
+
 from sphinx.writers.latex import LaTeXTranslator
 
 from util import test_root, SkipTest, remove_unicode_literals, with_app
@@ -26,7 +26,7 @@ def teardown_module():
     (test_root / '_build').rmtree(True)
 
 
-latex_warnfile = StringIO()
+latex_warnfile = six.StringIO()
 
 LATEX_WARNINGS = ENV_WARNINGS + """\
 None:None: WARNING: citation not found: missing
@@ -35,7 +35,7 @@ WARNING: invalid pair index entry u''
 WARNING: invalid pair index entry u'keyword; '
 """
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     LATEX_WARNINGS = remove_unicode_literals(LATEX_WARNINGS)
 
 

tests/test_build_texinfo.py

@@ -12,10 +12,10 @@ from __future__ import print_function
 
 import os
 import re
-import sys
-from StringIO import StringIO
 from subprocess import Popen, PIPE
 
+import six
+
 from sphinx.writers.texinfo import TexinfoTranslator
 
 from util import test_root, SkipTest, remove_unicode_literals, with_app
@@ -26,7 +26,7 @@ def teardown_module():
     (test_root / '_build').rmtree(True)
 
 
-texinfo_warnfile = StringIO()
+texinfo_warnfile = six.StringIO()
 
 TEXINFO_WARNINGS = ENV_WARNINGS + """\
 None:None: WARNING: citation not found: missing
@@ -34,7 +34,7 @@ None:None: WARNING: no matching candidate for image URI u'foo.\\*'
 None:None: WARNING: no matching candidate for image URI u'svgimg.\\*'
 """
 
-if sys.version_info >= (3, 0):
+if six.PY3:
     TEXINFO_WARNINGS = remove_unicode_literals(TEXINFO_WARNINGS)
 
 

tests/test_config.py

@@ -9,7 +9,7 @@
     :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
-import sys
+import six
 
 from util import TestApp, with_app, with_tempdir, raises, raises_msg
 
@@ -101,7 +101,7 @@ def test_errors_warnings(dir):
     # test the warning for bytestrings with non-ascii content
     # bytestrings with non-ascii content are a syntax error in python3 so we
     # skip the test there
-    if sys.version_info >= (3, 0):
+    if six.PY3:
         return
     (dir / 'conf.py').write_text(
         u'# -*- coding: latin-1\nproject = "fooä"\n', encoding='latin-1')

tests/test_doctest.py

@@ -11,12 +11,13 @@
 from __future__ import print_function
 
 import sys
-import StringIO
+
+import six
 
 from util import with_app
 
 
-status = StringIO.StringIO()
+status = six.StringIO()
 cleanup_called = 0
 
 @with_app(buildername='doctest', status=status)

tests/test_docutilsconf.py

@@ -11,13 +11,14 @@
 
 import os
 import re
-from StringIO import StringIO
 from functools import wraps
 
+import six
+
 from util import test_roots, TestApp
 
 
-html_warnfile = StringIO()
+html_warnfile = six.StringIO()
 root = test_roots / 'test-docutilsconf'
 
 

tests/test_env.py

@@ -8,7 +8,7 @@
     :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
-import sys
+import six
 
 from util import TestApp, remove_unicode_literals, path
 
@@ -57,7 +57,7 @@ def test_images():
     htmlbuilder.imgpath = 'dummy'
     htmlbuilder.post_process_images(tree)
     image_uri_message = "no matching candidate for image URI u'foo.*'"
-    if sys.version_info >= (3, 0):
+    if six.PY3:
         image_uri_message = remove_unicode_literals(image_uri_message)
     assert image_uri_message in app._warning.content[-1]
     assert set(htmlbuilder.images.keys()) == \

tests/test_intersphinx.py

@@ -11,11 +11,8 @@
 
 import zlib
 import posixpath
-try:
-    from io import BytesIO
-except ImportError:
-    from cStringIO import StringIO as BytesIO
 
+import six
 from docutils import nodes
 
 from sphinx import addnodes
@@ -48,7 +45,7 @@ a term std:term -1 glossary.html#term-a-term -
 
 
 def test_read_inventory_v1():
-    f = BytesIO(inventory_v1)
+    f = six.BytesIO(inventory_v1)
     f.readline()
     invdata = read_inventory_v1(f, '/util', posixpath.join)
     assert invdata['py:module']['module'] == \
@@ -58,12 +55,12 @@ def test_read_inventory_v1():
 
 
 def test_read_inventory_v2():
-    f = BytesIO(inventory_v2)
+    f = six.BytesIO(inventory_v2)
     f.readline()
     invdata1 = read_inventory_v2(f, '/util', posixpath.join)
 
     # try again with a small buffer size to test the chunking algorithm
-    f = BytesIO(inventory_v2)
+    f = six.BytesIO(inventory_v2)
     f.readline()
     invdata2 = read_inventory_v2(f, '/util', posixpath.join, bufsize=5)
 

tests/test_intl.py

@@ -13,14 +13,15 @@ from __future__ import print_function
 
 import os
 import re
-from StringIO import StringIO
 from subprocess import Popen, PIPE
 from xml.etree import ElementTree
 
+import six
+
 from util import test_roots, path, with_app, SkipTest
 
 
-warnfile = StringIO()
+warnfile = six.StringIO()
 root = test_roots / 'test-intl'
 doctreedir = root / '_build' / 'doctree'
 

tests/test_quickstart.py

@@ -11,8 +11,8 @@
 
 import sys
 import time
-from StringIO import StringIO
-import tempfile
+
+import six
 
 from util import raises, with_tempdir, with_app, SkipTest
 
@@ -22,7 +22,7 @@ from sphinx.util.console import nocolor, coloron
 from sphinx.util.pycompat import execfile_
 
 
-warnfile = StringIO()
+warnfile = six.StringIO()
 
 
 def setup_module():
@@ -35,7 +35,7 @@ def mock_raw_input(answers, needanswer=False):
             raise AssertionError('answer for %r missing and no default '
                                  'present' % prompt)
         called.add(prompt)
-        if sys.version_info < (3, 0):
+        if six.PY2:
             prompt = str(prompt)  # Python2.x raw_input emulation
             # `raw_input` encode `prompt` by default encoding to print.
         else:
@@ -264,7 +264,7 @@ def test_quickstart_and_build(tempdir):
             (tempdir / '_build' / 'html'),  #outdir
             (tempdir / '_build' / '.doctree'),  #doctreedir
             'html',  #buildername
-            status=StringIO(),
+            status=six.StringIO(),
             warning=warnfile)
     app.builder.build_all()
     warnings = warnfile.getvalue()

tests/test_searchadapters.py

@@ -10,7 +10,8 @@
 """
 
 import os
-from StringIO import StringIO
+
+import six
 
 from sphinx.websupport import WebSupport
 
@@ -31,8 +32,8 @@ def search_adapter_helper(adapter):
     clear_builddir()
 
     settings = {'builddir': os.path.join(test_root, 'websupport'),
-                'status': StringIO(),
-                'warning': StringIO()}
+                'status': six.StringIO(),
+                'warning': six.StringIO()}
     settings.update({'srcdir': test_root,
                      'search': adapter})
     support = WebSupport(**settings)

tests/test_websupport.py

@@ -10,9 +10,10 @@
 """
 
 import os
-from StringIO import StringIO
 from functools import wraps
 
+import six
+
 from sphinx.websupport import WebSupport
 from sphinx.websupport.errors import DocumentNotFoundError, \
      CommentNotAllowedError, UserNotAuthorizedError
@@ -30,8 +31,8 @@ from util import test_root, raises, skip_if
 
 
 default_settings = {'builddir': os.path.join(test_root, 'websupport'),
-                    'status': StringIO(),
-                    'warning': StringIO()}
+                    'status': six.StringIO(),
+                    'warning': six.StringIO()}
 
 def teardown_module():
     (test_root / 'generated').rmtree(True)

tests/util.py

@@ -8,12 +8,13 @@
 """
 
 import sys
-import StringIO
 import tempfile
 import shutil
 import re
 from functools import wraps
 
+import six
+
 from sphinx import application
 from sphinx.theming import Theme
 from sphinx.ext.autodoc import AutoDirective
@@ -162,7 +163,7 @@ class TestApp(application.Sphinx):
         if confoverrides is None:
             confoverrides = {}
         if status is None:
-            status = StringIO.StringIO()
+            status = six.StringIO()
         if warning is None:
             warning = ListOutput('stderr')
         if freshenv is None: