Python 3.6 invalid escape sequence deprecation fixes

8 files changed, 18 insertions, 12 deletions

diff --git a/CHANGES.rst b/CHANGES.rst
index c6d5556f..000705b7 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,9 @@
+v34.3.1
+-------
+
+* #983: Fixes to invalid escape sequence deprecations on
+  Python 3.6.
+
 v34.3.0
 -------
 
diff --git a/pkg_resources/tests/test_resources.py b/pkg_resources/tests/test_resources.py
index f28378b9..b997aaa3 100644
--- a/pkg_resources/tests/test_resources.py
+++ b/pkg_resources/tests/test_resources.py
@@ -593,7 +593,7 @@ class TestParsing:
             [Requirement('Twis-Ted>=1.2-1')]
         )
         assert (
-            list(parse_requirements('Twisted >=1.2, \ # more\n<2.0'))
+            list(parse_requirements('Twisted >=1.2, \\ # more\n<2.0'))
             ==
             [Requirement('Twisted>=1.2,<2.0')]
         )
diff --git a/setuptools/command/easy_install.py b/setuptools/command/easy_install.py
index d3eabfc3..f5ca0754 100755
--- a/setuptools/command/easy_install.py
+++ b/setuptools/command/easy_install.py
@@ -2013,7 +2013,7 @@ class ScriptWriter(object):
     gui apps.
     """
 
-    template = textwrap.dedent("""
+    template = textwrap.dedent(r"""
         # EASY-INSTALL-ENTRY-SCRIPT: %(spec)r,%(group)r,%(name)r
         __requires__ = %(spec)r
         import re
diff --git a/setuptools/msvc.py b/setuptools/msvc.py
index 97e27303..d41daec4 100644
--- a/setuptools/msvc.py
+++ b/setuptools/msvc.py
@@ -272,7 +272,7 @@ class PlatformInfo:
         )
 
     def target_dir(self, hidex86=False, x64=False):
-        """
+        r"""
         Target platform specific subfolder.
 
         Parameters
@@ -294,7 +294,7 @@ class PlatformInfo:
         )
 
     def cross_dir(self, forcex86=False):
-        """
+        r"""
         Cross platform specific subfolder.
 
         Parameters
diff --git a/setuptools/package_index.py b/setuptools/package_index.py
index 3544dd54..5d397b67 100755
--- a/setuptools/package_index.py
+++ b/setuptools/package_index.py
@@ -34,8 +34,8 @@ EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.+!]+)$')
 HREF = re.compile("""href\\s*=\\s*['"]?([^'"> ]+)""", re.I)
 # this is here to fix emacs' cruddy broken syntax highlighting
 PYPI_MD5 = re.compile(
-    '<a href="([^"#]+)">([^<]+)</a>\n\s+\\(<a (?:title="MD5 hash"\n\s+)'
-    'href="[^?]+\?:action=show_md5&amp;digest=([0-9a-f]{32})">md5</a>\\)'
+    '<a href="([^"#]+)">([^<]+)</a>\n\\s+\\(<a (?:title="MD5 hash"\n\\s+)'
+    'href="[^?]+\\?:action=show_md5&amp;digest=([0-9a-f]{32})">md5</a>\\)'
 )
 URL_SCHEME = re.compile('([-+.a-z0-9]{2,}):', re.I).match
 EXTENSIONS = ".tar.gz .tar.bz2 .tar .zip .tgz".split()
@@ -161,7 +161,7 @@ def interpret_distro_name(
     # versions in distribution archive names (sdist and bdist).
 
     parts = basename.split('-')
-    if not py_version and any(re.match('py\d\.\d$', p) for p in parts[2:]):
+    if not py_version and any(re.match(r'py\d\.\d$', p) for p in parts[2:]):
         # it is a bdist_dumb, not an sdist -- bail out
         return
 
@@ -205,7 +205,7 @@ def unique_values(func):
     return wrapper
 
 
-REL = re.compile("""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
+REL = re.compile(r"""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
 # this line is here to fix emacs' cruddy broken syntax highlighting
 
 
diff --git a/setuptools/sandbox.py b/setuptools/sandbox.py
index 0ddd2332..41c1c3b1 100755
--- a/setuptools/sandbox.py
+++ b/setuptools/sandbox.py
@@ -215,7 +215,7 @@ def _needs_hiding(mod_name):
     >>> _needs_hiding('Cython')
     True
     """
-    pattern = re.compile('(setuptools|pkg_resources|distutils|Cython)(\.|$)')
+    pattern = re.compile(r'(setuptools|pkg_resources|distutils|Cython)(\.|$)')
     return bool(pattern.match(mod_name))
 
 
@@ -391,7 +391,7 @@ class DirectorySandbox(AbstractSandbox):
 
     _exception_patterns = [
         # Allow lib2to3 to attempt to save a pickled grammar object (#121)
-        '.*lib2to3.*\.pickle$',
+        r'.*lib2to3.*\.pickle$',
     ]
     "exempt writing to paths that match the pattern"
 
diff --git a/setuptools/tests/test_bdist_egg.py b/setuptools/tests/test_bdist_egg.py
index 5aabf404..d24aa366 100644
--- a/setuptools/tests/test_bdist_egg.py
+++ b/setuptools/tests/test_bdist_egg.py
@@ -41,4 +41,4 @@ class Test:
 
         # let's see if we got our egg link at the right place
         [content] = os.listdir('dist')
-        assert re.match('foo-0.0.0-py[23].\d.egg$', content)
+        assert re.match(r'foo-0.0.0-py[23].\d.egg$', content)
diff --git a/setuptools/tests/test_easy_install.py b/setuptools/tests/test_easy_install.py
index b75e6ff2..fd8300a0 100644
--- a/setuptools/tests/test_easy_install.py
+++ b/setuptools/tests/test_easy_install.py
@@ -65,7 +65,7 @@ class TestEasyInstallTest:
 
     def test_get_script_args(self):
         header = ei.CommandSpec.best().from_environment().as_header()
-        expected = header + DALS("""
+        expected = header + DALS(r"""
             # EASY-INSTALL-ENTRY-SCRIPT: 'spec','console_scripts','name'
             __requires__ = 'spec'
             import re