Remove dates from jekyll post files using git mv

rename_git.py

#!/bin/python

"""
    Remove dates from jekyll post files
    
    This is a small script made to remove dates from jekyll files using 
    the 'git mv' command. 
    
    It expects files to be in the format YYYY-MM-DD-NAME.EXT.
    
    You can pass a different function to change() to remove or add 
    something different from filenames.
    
    Simply point it to a folder containing the markdown files and it 
    will run git mv on all of them for you. Don't forget to commit afterwards!
    
    Usage:
        ./rename_git.py path/to/files
"""

import os
import argparse
import subprocess


def get_command(src, dst): return 'git mv {0} {1}'.format(src, dst)

def remove_date(name, path):  return path + name[11::]

def change(filename, path, change_fn):
    new_name = change_fn(filename, path)
    subprocess.run(get_command(path + filename, new_name), shell = True)
    

if __name__ == '__main__':
    
    parser = argparse.ArgumentParser(description='Change filenames')
    parser.add_argument('path')
    args = parser.parse_args()
    
    filenames = next(os.walk(args.path))[2]
    
    [change(name, args.path, remove_date) for name in filenames]
    
    print('Filenames in {0} have been changed'.format(args.path))