Noissue - Adapt best practices for trailing commas (buildtools)

ensure_dependencies.py

 #!/usr/bin/env python
 
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import sys
 import os
 import posixpath
 import re
@@ skipping 23 matching lines @@
   buildtools = buildtools hg:016d16f7137b git:f3f8692f82e5
   # Clone the adblockplus repository into adblockplus directory, overwriting the
   # usual source URL for Git repository and specifying VCS specific revision IDs.
   adblockplus = adblockplus hg:893426c6a6ab git:git@github.com:user/adblockplus.git@b2ffd52b
   # Clone the adblockpluschrome repository into the adblockpluschrome directory,
   # from a specific Git repository, specifying the revision ID.
   adblockpluschrome = git:git@github.com:user/adblockpluschrome.git@1fad3a7
 '''
 
 SKIP_DEPENDENCY_UPDATES = os.environ.get(
-    'SKIP_DEPENDENCY_UPDATES', ''
+    'SKIP_DEPENDENCY_UPDATES', '',
 ).lower() not in ('', '0', 'false')
 
 NPM_LOCKFILE = '.npm_install_lock'
 
 
 class Mercurial:
     def istype(self, repodir):
         return os.path.exists(os.path.join(repodir, '.hg'))
 
     def clone(self, source, target):
@@ skipping 85 matching lines @@
 
 
 repo_types = OrderedDict((
     ('hg', Mercurial()),
     ('git', Git()),
 ))
 
 # [vcs:]value
 item_regexp = re.compile(
     '^(?:(' + '|'.join(map(re.escape, repo_types.keys())) + '):)?'
-    '(.+)$'
+    '(.+)$',
 )
 
 # [url@]rev
 source_regexp = re.compile(
     '^(?:(.*)@)?'
-    '(.+)$'
+    '(.+)$',
 )
 
 
 def merge_seqs(seq1, seq2):
     """Return a list of any truthy values from the suplied sequences
 
     (None, 2), (1,)      => [1, 2]
     None, (1, 2)         => [1, 2]
     (1, 2), (3, 4)       => [3, 4]
     """
@@ skipping 271 matching lines @@
     args = parser.parse_args()
 
     if args.quiet:
         logging.disable(logging.INFO)
 
     repos = args.repos
     if not len(repos):
         repos = [os.path.dirname(__file__)]
     for repo in repos:
         resolve_deps(repo)