IPy.py 文件源码

def __getitem__(self, key):
        """Called to implement evaluation of self[key].

        >>> ip=IP('127.0.0.0/30')
        >>> for x in ip:
        ...  print hex(x.int())
        ...
        0x7F000000L
        0x7F000001L
        0x7F000002L
        0x7F000003L
        >>> hex(ip[2].int())
        '0x7F000002L'
        >>> hex(ip[-1].int())
        '0x7F000003L'
        """

        if not isinstance(key, types.IntType) and not isinstance(key, types.LongType):
            raise TypeError
        if abs(key) >= self.len():
            raise IndexError
        if key < 0:
            key = self.len() - abs(key)

        return self.ip + long(key)