Cleanup pylint errors

pylib/gyp/xcode_emulation.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import copy
@@ skipping 695 matching lines @@
     return install_name
 
   def _MapLinkerFlagFilename(self, ldflag, gyp_to_build_path):
     """Checks if ldflag contains a filename and if so remaps it from
     gyp-directory-relative to build-directory-relative."""
     # This list is expanded on demand.
     # They get matched as:
     #   -exported_symbols_list file
     #   -Wl,exported_symbols_list file
     #   -Wl,exported_symbols_list,file
-    LINKER_FILE = '(\S+)'
-    WORD = '\S+'
+    LINKER_FILE = r'(\S+)'
+    WORD = r'\S+'
     linker_flags = [
       ['-exported_symbols_list', LINKER_FILE],    # Needed for NaCl.
       ['-unexported_symbols_list', LINKER_FILE],
       ['-reexported_symbols_list', LINKER_FILE],
       ['-sectcreate', WORD, WORD, LINKER_FILE],   # Needed for remoting.
     ]
     for flag_pattern in linker_flags:
       regex = re.compile('(?:-Wl,)?' + '[ ,]'.join(flag_pattern))
       m = regex.match(ldflag)
       if m:
@@ skipping 478 matching lines @@
   if XCODE_VERSION_CACHE:
     return XCODE_VERSION_CACHE
   try:
     version_list = GetStdout(['xcodebuild', '-version']).splitlines()
     # In some circumstances xcodebuild exits 0 but doesn't return
     # the right results; for example, a user on 10.7 or 10.8 with
     # a bogus path set via xcode-select
     # In that case this may be a CLT-only install so fall back to
     # checking that version.
     if len(version_list) < 2:
-      raise GypError, "xcodebuild returned unexpected results"
+      raise GypError("xcodebuild returned unexpected results")
   except:
     version = CLTVersion()
     if version:
-      version = re.match('(\d\.\d\.?\d*)', version).groups()[0]
+      version = re.match(r'(\d\.\d\.?\d*)', version).groups()[0]
     else:
-      raise GypError, "No Xcode or CLT version detected!"
+      raise GypError("No Xcode or CLT version detected!")
     # The CLT has no build information, so we return an empty string.
     version_list = [version, '']
   version = version_list[0]
   build = version_list[-1]
   # Be careful to convert "4.2" to "0420":
   version = version.split()[-1].replace('.', '')
   version = (version + '0' * (3 - len(version))).zfill(4)
   if build:
     build = build.split()[-1]
   XCODE_VERSION_CACHE = (version, build)
@@ skipping 339 matching lines @@
       if toolset == 'target':
         iphoneos_config_dict['xcode_settings']['SDKROOT'] = 'iphoneos'
   return targets
 
 def CloneConfigurationForDeviceAndEmulator(target_dicts):
   """If |target_dicts| contains any iOS targets, automatically create -iphoneos
   targets for iOS device builds."""
   if _HasIOSTarget(target_dicts):
     return _AddIOSDeviceConfigurations(target_dicts)
   return target_dicts