regex.py 文件源码

def __or__(self, other):
        """
        Public method of OR operator: a|b. It call or_() internal method.
        If or_() returns None: RegexOr object is used (and otherwise,
        use or_() result).
        """
        # Try to optimize (a|b)
        new_regex = self.or_(other)
        if new_regex:
            return new_regex

        # Else use (a|b)
        return RegexOr((self, other))