Use the configparser backport for Python 2

This fixes a problem we were having with comments inside values, which is fixed
in Python 3's configparser.
Close #828

Author: PCManticore

ChangeLog

@@ -10,6 +10,12 @@ ChangeLog for Pylint
 
       Close #852
 
+    * Use the configparser backport for Python 2
+
+      This fixes a problem we were having with comments inside values, which is fixed
+      in Python 3's configparser.
+      Close #828
+
     * A new error was added, 'invalid-length-returned', when the `__len__`
       special method returned something else than a non-negative number.
 

pylint/__pkginfo__.py

@@ -33,6 +33,8 @@
 
 if sys.platform == 'win32':
     install_requires.append('colorama')
+if sys.version_info[0] == 2:
+    install_requires.append('configparser')
 
 
 license = 'GPL'

pylint/checkers/typecheck.py

@@ -322,7 +322,7 @@ def open(self):
         # (surrounded by quote `"` and followed by a comma `,`)
         # REQUEST,aq_parent,"[a-zA-Z]+_set{1,2}"' =>
         # ('REQUEST', 'aq_parent', '[a-zA-Z]+_set{1,2}')
-        if isinstance(self.config.generated_members, str):
+        if isinstance(self.config.generated_members, six.string_types):
             gen = shlex.shlex(self.config.generated_members)
             gen.whitespace += ','
             gen.wordchars += '[]-+'

pylint/config.py

@@ -35,7 +35,10 @@
 import sys
 import time
 
-from six.moves import configparser
+try:
+    import configparser
+except ImportError:
+    from six.moves import configparser
 from six.moves import range
 
 from pylint import utils