remove all git branches except for the few you want

remove_most_branches.py

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


def main():
    branches_dict = branches()
    save_nums = input('type branch numbers to NOT delete, seperated by spaces\n')
    save_nums = map(int, re.findall(r'\d+', save_nums))
    for num in save_nums:
        branches_dict.pop(num)
    for k, v in branches_dict.items():
        print(k, v)
    input('will delete these, press ctrl-c to stop, otherwise return...')
    for branch in branches_dict.values():
        getoutput('git branch -D ' + branch)
    return branches_dict


def branches():
    branches = getoutput('git branch').split('\n')
    branches = [b for b in branches if 'master' not in b]
    return print_branches_return_dict(branches)


def print_branches_return_dict(branches):
    branch_dict = {}
    for i, b in enumerate(branches):
        if i < 10:
            print(i, '', b)
        else:
            print(i, b)
        branch_dict[i] = b
    return branch_dict


if __name__ == '__main__':
    main()