_getopts.py 文件源码

def breakopt(arg):
    m = re.match(r"^\-\-?([0-9a-zA-Z][0-9a-zA-Z\-]*)(?:\=(.+))?$", arg, re.ASCII)
    if m:
        opt_name = m.group(1)
        try:
            return opt_name, m.group(2)
        except IndexError:
            return opt_name, None
    return None, None