file_reformat

file_reformat.py

"""
file format
* abc
    * abcd
    * abcde
* pef
    * zxc
    * zxcv
"""
with open('song.txt', 'r', encoding='utf-8-sig') as f:
    content = f.readlines()
    author = {}
    song = []
    name = None
    for s in content:
        if s[0] == '\n': continue
        if s[0] != '*':
            author[name].append(s)
        else:
            name = s
            author[name] = list()

author = sorted(author.items(), key=lambda kv: kv[0])
with open('reformat_title.txt', 'w', encoding='utf-8-sig') as f:
    for name, song_list in author:
        song_list = sorted(song_list)
        f.write(name)
        for song in sorted(song_list):
            f.write(song)