git pre-commit hook that prevents user from comitting to master branch

pre-commit

#!/usr/bin/python

# Pre-commit hook to prevent commits in the master branch ('prod' in our case)
# Create a filed named 'pre-commit' in your local repository in the '.git/hooks' folder
# and make sure it is executable by using `chmod +x .git/hooks/pre-commit`

from subprocess import check_output

FORBIDDEN_BRANCH = 'prod'
CURRENT_BRANCH = str(
        check_output(
            'git symbolic-ref --short HEAD', shell=True)
    ).strip()

# print "Forbidden branch is: " + FORBIDDEN_BRANCH + "."
# print "Current branch is: " + CURRENT_BRANCH + "."

if FORBIDDEN_BRANCH == CURRENT_BRANCH:
    print 'HOLD UP!'
    print ''
    print 'You are trying to commit to *{0}*'.format(CURRENT_BRANCH) + ' branch!'
    print 'Are you sure you want to do this?'
    print 'If you are, you can force commiting by adding the --no-verify flag.'

    exit(1)