Git post-receive hook on python

post-receive

#!/usr/bin/env python                                                                    
# -*- coding: UTF-8 -*-                                                                  
#post-receive                                                                            
                                                                                         
import sys                                                                               
import subprocess                                                                        
                                                                                         
# 1. Read STDIN (Format: "from_commit to_commit branch_name")                            
(old, new, branch) = sys.stdin.read().split()                                            
                                                                                         
# 2. Only deploy if master branch was pushed                                             
if branch == 'refs/heads/master':                                                        
    subprocess.call('date >> ~/prod-deployment.log', shell=True)                         
    subprocess.call('GIT_WORK_TREE=/home/ft/app.prod git checkout master -f', shell=True)
    subprocess.call('cd ../../app.prod;bower update', shell=True)                        
                                                                                         
#3. Only deploy if develop branch was pushed                                             
if branch == 'refs/heads/develop':                                                       
    subprocess.call('date >> ~/dev-deployment.log', shell=True)                          
    subprocess.call('GIT_WORK_TREE=/home/ft/app.dev git checkout develop -f', shell=True)
    subprocess.call('cd ../../app.dev;bower update', shell=True)