open some changed files on branch, compared to master

open_git_changed_files.py

#!/usr/bin/env python3
from subprocess import getoutput
import os
import re


def main():
    files = get_files()
    if not files[0]: return error()
    nums = file_nums_to_open(files)
    file_dict = get_file_dict(files)
    for num in nums:
        os.system('gvim ' + file_dict[num])


def error():
    print('no files changed on this branch')


def get_files():
    return getoutput('git diff master --name-only').split('\n')


def file_nums_to_open(files):
    print_files(files)
    nums = input('\ntype file numbers to open\n')
    return map(int, re.findall(r'\d+', nums))


def print_files(files):
    for i, f in enumerate(files):
        if i < 10:
            print(i, '', f)
        else:
            print(i, f)


def get_file_dict(files):
    return { i: f for i, f in enumerate(files) }


if __name__ == '__main__':
    main()