python正则表达式验证ipv6地址

概述python正则表达式验证ipv6地址

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def ipv6_addr(addr):    '''    Returns True if the IPv6 address (and optional subnet) are valID,otherwise    returns False.    '''    # From http://stackoverflow.com/questions/6276115/ipv6-regexp-python    ip6_regex = (r'(\A([0-9a-f]{1,4}:){1,1}(:[0-9a-f]{1,4}){1,6}\Z)|'                 r'(\A([0-9a-f]{1,2}(:[0-9a-f]{1,5}\Z)|'                 r'(\A([0-9a-f]{1,3}(:[0-9a-f]{1,4}\Z)|'                 r'(\A([0-9a-f]{1,4}(:[0-9a-f]{1,3}\Z)|'                 r'(\A([0-9a-f]{1,5}(:[0-9a-f]{1,2}\Z)|'                 r'(\A([0-9a-f]{1,6}(:[0-9a-f]{1,1}\Z)|'                 r'(\A(([0-9a-f]{1,7}|:):\Z)|(\A:(:[0-9a-f]{1,4})'                 r'{1,7}\Z)|(\A((([0-9a-f]{1,4}:){6})(25[0-5]|2[0-4]\d|[0-1]'                 r'?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})\Z)|'                 r'(\A(([0-9a-f]{1,4}:){5}[0-9a-f]{1,4}:(25[0-5]|2[0-4]\d|'                 r'[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})\Z)|'                 r'(\A([0-9a-f]{1,4}:){5}:[0-9a-f]{1,4}:(25[0-5]|2[0-4]\d|'                 r'[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}\Z)|'                 r'(\A([0-9a-f]{1,4}:(25[0-5]|'                 r'2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d))'                 r'{3}\Z)|(\A([0-9a-f]{1,3}:'                 r'(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?'                 r'\d?\d)){3}\Z)|(\A([0-9a-f]{1,2}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|'                 r'[0-1]?\d?\d)){3}\Z)|(\A([0-9a-f]{1,4}(:[0-9a-f]'                 r'{1,1}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|'                 r'2[0-4]\d|[0-1]?\d?\d)){3}\Z)|(\A(([0-9a-f]{1,5}|:):'                 r'(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?'                 r'\d?\d)){3}\Z)|(\A:(:[0-9a-f]{1,5}:(25[0-5]|2[0-4]\d|'                 r'[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}\Z)')    return bool(re.match(ip6_regex,addr))

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