webkitpy: Slightly adjusting pylintrc allow names.

third_party/WebKit/Tools/Scripts/webkitpy/pylintrc

 # Copyright (c) 2012 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 185 matching lines @@
 argument-rgx=[a-z_][a-z0-9_]{1,30}$
 
 # Regular expression which should only match correct variable names.
 variable-rgx=[a-z_][a-z0-9_]{1,30}$
 
 # Regular expression which should only match correct list comprehension or
 # generator expression variable names.
 inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
 
 # Good variable names which should always be accepted, separated by a comma.
-good-names=i,j,k,ex,Run,_,_log
+# These short names are acceptable in the following cases:
+#  _        - unused value
+#  i/j/k    - for XXX in range():
+#  k/v      - for k, v in x.items():
+#  x/y/z    - coordinates
+#  e        - except XXXError as e:
+#  f/fd     - with open('blah') as f:
+#  _log/Run - webkitpy functions
+good-names=_,i,j,k,v,x,y,z,e,f,fd,_log,Run
 
 # Bad variable names which should always be refused, separated by a comma.
 bad-names=foo,bar,baz,toto,tutu,tata
 
 # Regular expression which should only match functions or classes name which do
 # not require a docstring.
 no-docstring-rgx=__.*__
 
 
 [DESIGN]
@@ skipping 59 matching lines @@
 # Create a graph of internal dependencies in the given file (report RP0402 must
 # not be disabled).
 int-import-graph=
 
 
 [EXCEPTIONS]
 
 # Exceptions that will emit a warning when being caught. Defaults to
 # "Exception".
 overgeneral-exceptions=Exception