convert a list of flat nested items to markdown bullet points

nested_list_to_md_bullets.py

# The ideal usage is to create an index of all the files
# from the current dir for describing in some .md file:
# find . | grep -v .git | python nested_list_to_md_bullets.py

import sys
import argparse
import pprint

parser = argparse.ArgumentParser(description='')
parser.add_argument('--file', default='-')
parser.add_argument('--separator', default='/')

args = parser.parse_args()

if args.file == "-":
    c = sys.stdin.readlines()
else:
    c = open(args.file, "r").readlines()

res = {}

for line in c:
    parts = line.strip().split(args.separator)
    curr = res
    for part in parts:
        if part in curr:
            pass
        else:
            curr[part] = {}
        curr = curr[part]

def helper(curr, key, fullpath, level=0):
    new_level = level
    if key is not None:
        print(f"{' ' * level * 2} * [`{key}`]({args.separator.join(fullpath)}) - ")
        new_level = level + 1
    for k, v in curr.items():
        helper(v, k, fullpath + [k], new_level)


helper(res, None, [])