List the most-used commands from your Bash history file

gistfile1.txt

#!/usr/bin/env python

import operator, re, os.path

# http://stackoverflow.com/questions/613183/python-sort-a-dictionary-by-value
# http://stackoverflow.com/questions/4510709/python-find-index-of-first-digit-in-string
# http://docs.python.org/tutorial/inputoutput.html

# TODO:
# - account for commands piped in
# - account for sudo
# - switch to sort accending
# - argument to look at another user's top commands instead of just the current user

def top_commands():
  commands = {}
  f = open(os.path.expanduser('~') + '/.bash_history')
  for line in f.readlines():
    m = re.search(' ', line)
    if m != None:
      command = line[:m.start()]
      if command not in commands:
        commands[command] = 1
      else:
        commands[command] += 1
  sorted_commands = sorted(commands.iteritems(), key=operator.itemgetter(1), reverse=True)
  return sorted_commands

if __name__ == '__main__':
  for top_command in top_commands():
    print top_command[0], top_command[1]