git pull for all subdirectories

pull_all.py

from __future__ import print_function

import os
import subprocess

def main():
  cmd = 'git pull'
  dir = os.getcwd()
  for subdir in os.listdir(dir):
    if os.path.isdir(subdir) and os.path.exists(subdir):
      print('chdir', subdir)
      os.chdir(subdir)
      subprocess.check_output(cmd, shell=True)
      os.chdir(dir)

if __name__ == '__main__':
  main()