- updated pre-commit hook to work with other distros (eg. python 2 and 3 installed)

doc/sources/contribute.rst

@@ -88,9 +88,10 @@ but the fork you create with the following steps:
        the git remote name 'origin' and you will be on branch 'master'.
     #. Compile and set up PYTHONPATH or install (see :ref:`dev-install`).
     #. Install our pre-commit hook that ensures your code doesn't violate our
-       styleguide by executing 'make hook' in your clone. This will run our
-       styleguide check whenever you do a commit, and if there are violations in
-       the parts that you changed, your commit will be aborted. Fix & retry.
+       styleguide by executing `make hook` from the root directory of your
+       clone. This will run our styleguide check whenever you do a commit, 
+       and if there are violations in the parts that you changed, your commit 
+       will be aborted. Fix & retry.
 
 Now, whenever you want to create a patch, you follow the following steps:
 

kivy/tools/pep8checker/pep8kivy.py

@@ -18,7 +18,7 @@ class KivyStyleChecker(pep8.Checker):
                 line_number, offset, text, check)
 
         # html generation
-        print '<tr><td>%d</td><td>%s</td></tr>' % (line_number, text)
+        print '<tr><td>{0}</td><td>{1}</td></tr>'.format(line_number, text)
 
 
 if __name__ == '__main__':

kivy/tools/pep8checker/pre-commit.githook

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 '''
     Kivy Git Pre-Commit Hook to Enforce Styleguide
@@ -32,7 +32,7 @@ proc = Popen(['git', 'diff', '--cached', '--name-only', 'HEAD'], stdout=PIPE)
 proc.wait()
 targets = [join(kivydir, target) for target in proc.stdout]
 call(['git', 'stash', 'save', '--keep-index', '--quiet'])
-retval = call(['python', script, srcdir] + targets)
+retval = call(['python2', script, srcdir] + targets)
 call(['git', 'stash', 'pop', '--quiet'])
 
 if retval: