Fix various whitespace issues reported by pyflakes

- E201 whitespace after '['
- E202 whitespace before '}'
- E221 multiple spaces before operator
- E222 multiple spaces after operator
- E225 missing whitespace around operator
- E226 missing whitespace around arithmetic operator
- E231 missing whitespace after ','
- E261 at least two spaces before inline comment
- E271 multiple spaces after keyword

Fixed automatically with autopep8:

  git ls-files | grep py$ | xargs autopep8 --in-place \
    --select E201,E202,E221,E222,E225,E226,E231,E261,E271

Change-Id: I367113eb8c847eb460532c7c2f8643f33040308c
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/254601
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: David Pursehouse <dpursehouse@collab.net>

subcmds/branches.py

@@ -23,7 +23,7 @@ class BranchColoring(Coloring):
   def __init__(self, config):
     Coloring.__init__(self, config, 'branch')
     self.current = self.printer('current', fg='green')
-    self.local   = self.printer('local')
+    self.local = self.printer('local')
     self.notinproject = self.printer('notinproject', fg='red')
 
 class BranchInfo(object):
@@ -170,11 +170,11 @@ is shown, then the branch appears in all projects.
           fmt = out.current if i.IsCurrent else out.write
           for p in paths:
             out.nl()
-            fmt(width*' ' + '          %s' % p)
+            fmt(width * ' ' + '          %s' % p)
           fmt = out.write
           for p in non_cur_paths:
             out.nl()
-            fmt(width*' ' + '          %s' % p)
+            fmt(width * ' ' + '          %s' % p)
       else:
         out.write(' in all projects')
       out.nl()