Removes parentheses in filename. Very useful for files downloaded from course.pku.edu.cn

remove_parentheses.pyw

from sys import argv
import os
import re

pattern = re.compile(r'^(.*?)(\(\d+\))+\.(.*?)$')

if __name__ == "__main__":
    for file_to_rename in argv[1:]:
        if os.path.isfile(file_to_rename):
            match_result = re.match(pattern, file_to_rename)
            if match_result is not None:
                g = match_result.groups()
                os.rename(file_to_rename, f'{g[0]}.{g[2]}')