Add a warning if the current version of python is not 2.5

R=dpranke@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/6791018

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@80212 0039d316-1c4b-4281-b951-d872f2087c98

PRESUBMIT.py

@@ -11,6 +11,17 @@ details on the presubmit API built into depot_tools.
 
 def CommonChecks(input_api, output_api):
   results = []
+  import sys
+  if not sys.version.startswith('2.5'):
+    # Depot_tools has the particularity that it needs to be tested on python
+    # 2.5. But we don't want the presubmit check to fail if it is not installed.
+    results.append(output_api.PresubmitNotifyResult(
+        'You should install python 2.5 and run ln -s $(which python2.5) python.'
+        '\n'
+        'A great place to put this symlink is in depot_tools.\n'
+        'Otherwise, you break depot_tools on python 2.5, you get to keep the '
+        'pieces.'))
+
 
   results.extend(input_api.canned_checks.CheckOwners(input_api, output_api))
   black_list = list(input_api.DEFAULT_BLACK_LIST) + [

chrome-update.py

-#!/usr/bin/python
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 

drover.py

-#!/usr/bin/python
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 

fix_encoding.py

@@ -187,7 +187,8 @@ class WinUnicodeConsoleOutput(WinUnicodeOutputBase):
 
     # Loads the necessary function.
     from ctypes import byref, GetLastError, POINTER, windll, WINFUNCTYPE
-    from ctypes.wintypes import BOOL, DWORD, HANDLE, LPVOID, LPWSTR
+    from ctypes.wintypes import BOOL, DWORD, HANDLE, LPWSTR
+    from ctypes.wintypes import LPVOID  # pylint: disable=E0611
 
     self._DWORD = DWORD
     self._byref = byref

gcl.py

-#!/usr/bin/python
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -25,12 +25,8 @@ try:
   import simplejson as json  # pylint: disable=F0401
 except ImportError:
   try:
-    import json
-    # Some versions of python2.5 have an incomplete json module.  Check to make
-    # sure loads exists.
-    # pylint: disable=W0104
-    json.loads
-  except (ImportError, AttributeError):
+    import json  # pylint: disable=F0401
+  except ImportError:
     # Import the one included in depot_tools.
     sys.path.append(os.path.join(os.path.dirname(__file__), 'third_party'))
     import simplejson as json  # pylint: disable=F0401

gclient.py

-#!/usr/bin/python
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 

git_cl.py

-#!/usr/bin/python
-# git-cl -- a git-command for integrating reviews on Rietveld
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
+"""A git-command for integrating reviews on Rietveld."""
+
 import errno
 import logging
 import optparse
@@ -23,7 +28,7 @@ try:
   import simplejson as json  # pylint: disable=F0401
 except ImportError:
   try:
-    import json
+    import json  # pylint: disable=F0401
   except ImportError:
     # Fall back to the packaged version.
     sys.path.append(os.path.join(os.path.dirname(__file__), 'third_party'))

owners.py

@@ -18,6 +18,8 @@ BASIC_EMAIL_REGEXP = r'^[\w\-\+\%\.]+\@[\w\-\+\%\.]+$'
 
 def _assert_is_collection(obj):
   assert not isinstance(obj, basestring)
+  # Module 'collections' has no 'Iterable' member
+  # pylint: disable=E1101
   if hasattr(collections, 'Iterable') and hasattr(collections, 'Sized'):
     assert (isinstance(obj, collections.Iterable) and
             isinstance(obj, collections.Sized))

presubmit_canned_checks.py

@@ -598,6 +598,7 @@ def RunPylint(input_api, output_api, white_list=None, black_list=None):
       return [output_api.PresubmitError(
           'Please install pylint with "sudo apt-get install python-setuptools; '
           'sudo easy_install pylint"\n'
+          'or visit http://pypi.python.org/pypi/setuptools.\n'
           'Cannot do static analysis of python files.')]
     if result:
       if input_api.is_committing:

presubmit_support.py

-#!/usr/bin/python
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -38,13 +38,8 @@ try:
   import simplejson as json  # pylint: disable=F0401
 except ImportError:
   try:
-    import json
-    # Some versions of python2.5 have an incomplete json module.  Check to make
-    # sure loads exists.
-    # Statement seems to have no effect
-    # pylint: disable=W0104
-    json.loads
-  except (ImportError, AttributeError):
+    import json  # pylint: disable=F0401
+  except ImportError:
     # Import the one included in depot_tools.
     sys.path.append(os.path.join(os.path.dirname(__file__), 'third_party'))
     import simplejson as json  # pylint: disable=F0401

trychange.py

-#!/usr/bin/python
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -25,20 +25,15 @@ try:
   import simplejson as json  # pylint: disable=F0401
 except ImportError:
   try:
-    import json
+    import json  # pylint: disable=F0401
   except ImportError:
-    json = None
+    # Import the one included in depot_tools.
+    sys.path.append(os.path.join(os.path.dirname(__file__), 'third_party'))
+    import simplejson as json  # pylint: disable=F0401
 
-try:
-  import breakpad  # pylint: disable=W0611
-except ImportError:
-  pass
-
-try:
-  import gcl
-except ImportError:
-  gcl = None
+import breakpad  # pylint: disable=W0611
 
+import gcl
 import fix_encoding
 import gclient_utils
 import scm

watchlists.py

-#!/usr/bin/python
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.