custom_exception.py 文件源码

def __init__(self, re_pattern=None, source=None):
        # ?? ??? ??? re_pattern??? 
        # re._pattern_type? ????
        # (???? ????? ?? ??)
        # self.pattern_str??? re_pattern.pattern?? ??
        if isinstance(re_pattern, re._pattern_type):
            self.pattern_str = re_pattern.pattern

        # re_pattern??? str(???)?? ??
        # self.pattern_str??? ?? ?? ??? ??
        elif isinstance(re_pattern, str):
            self.pattern_str = re_pattern

        self.source = source