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  • IPy的使用

    IPy - class and tools for handling of IPv4 and IPv6 addresses and networks.
    
    Website: https://github.com/autocracy/python-ipy/
    
    Presentation of the API
    =======================
    
    The IP class allows a comfortable parsing and handling for most
    notations in use for IPv4 and IPv6 addresses and networks. It was
    greatly inspired by RIPE's Perl module NET::IP's interface but
    doesn't share the implementation. It doesn't share non-CIDR netmasks,
    so funky stuff like a netmask of 0xffffff0f can't be done here.
    
        >>> from IPy import IP
        >>> ip = IP('127.0.0.0/30')
        >>> for x in ip:
        ...  print(x)
        ...
        127.0.0.0
        127.0.0.1
        127.0.0.2
        127.0.0.3
        >>> ip2 = IP('0x7f000000/30')
        >>> ip == ip2
        1
        >>> ip.reverseNames()
        ['0.0.0.127.in-addr.arpa.', '1.0.0.127.in-addr.arpa.', '2.0.0.127.in-addr.arpa.', '3.0.0.127.in-addr.arpa.']
        >>> ip.reverseName()
        '0-3.0.0.127.in-addr.arpa.'
        >>> ip.iptype()
        'PRIVATE'
    
    
    Supports most IP address formats
    ================================
    
    It can detect about a dozen different ways of expressing IP addresses
    and networks, parse them and distinguish between IPv4 and IPv6 addresses:
    
        >>> IP('10.0.0.0/8').version()
        4
        >>> IP('::1').version()
        6
    
    IPv4 addresses
    --------------
    
        >>> print(IP(0x7f000001))
        127.0.0.1
        >>> print(IP('0x7f000001'))
        127.0.0.1
        >>> print(IP('127.0.0.1'))
        127.0.0.1
        >>> print(IP('10'))
        10.0.0.0
    
    IPv6 addresses
    --------------
    
        >>> print(IP('1080:0:0:0:8:800:200C:417A'))
        1080::8:800:200c:417a
        >>> print(IP('1080::8:800:200C:417A'))
        1080::8:800:200c:417a
        >>> print(IP('::1'))
        ::1
        >>> print(IP('::13.1.68.3'))
        ::d01:4403
    
    Network mask and prefixes
    -------------------------
    
        >>> print(IP('127.0.0.0/8'))
        127.0.0.0/8
        >>> print(IP('127.0.0.0/255.0.0.0'))
        127.0.0.0/8
        >>> print(IP('127.0.0.0-127.255.255.255'))
        127.0.0.0/8
    
    
    Derive network address
    ===========================
    
    IPy can transform an IP address into a network address by applying the given
    netmask:
    >>> print(IP('127.0.0.1/255.0.0.0', make_net=True))
    127.0.0.0/8
    
    This can also be done for existing IP instances:
    >>> print(IP('127.0.0.1').make_net('255.0.0.0'))
    127.0.0.0/8
    
    
    Convert address to string
    =========================
    
    Nearly all class methods which return a string have an optional
    parameter 'wantprefixlen' which controls if the prefixlen or netmask
    is printed. Per default the prefilen is always shown if the network
    contains more than one address::
    
        wantprefixlen == 0 / None     don't return anything   1.2.3.0
        wantprefixlen == 1            /prefix                 1.2.3.0/24
        wantprefixlen == 2            /netmask                1.2.3.0/255.255.255.0
        wantprefixlen == 3            -lastip                 1.2.3.0-1.2.3.255
    
    You can also change the defaults on an per-object basis by fiddling with
    the class members:
    
     * NoPrefixForSingleIp
     * WantPrefixLen
    
    Examples of string conversions:
    
        >>> IP('10.0.0.0/32').strNormal()
        '10.0.0.0'
        >>> IP('10.0.0.0/24').strNormal()
        '10.0.0.0/24'
        >>> IP('10.0.0.0/24').strNormal(0)
        '10.0.0.0'
        >>> IP('10.0.0.0/24').strNormal(1)
        '10.0.0.0/24'
        >>> IP('10.0.0.0/24').strNormal(2)
        '10.0.0.0/255.255.255.0'
        >>> IP('10.0.0.0/24').strNormal(3)
        '10.0.0.0-10.0.0.255'
        >>> ip = IP('10.0.0.0')
        >>> print(ip)
        10.0.0.0
        >>> ip.NoPrefixForSingleIp = None
        >>> print(ip)
        10.0.0.0/32
        >>> ip.WantPrefixLen = 3
        >>> print(ip)
        10.0.0.0-10.0.0.0
    
    Work with multiple networks
    ===========================
    
    Simple addition of neighboring netblocks that can be aggregated will yield
    a parent network of both, but more complex range mapping and aggregation
    requires is available with the IPSet class which will hold any number of
    unique address ranges and will aggregate overlapping ranges.
    
        >>> from IPy import IP, IPSet
        >>> IP('10.0.0.0/22') - IP('10.0.2.0/24')
        IPSet([IP('10.0.0.0/23'), IP('10.0.3.0/24')])
        >>> IPSet([IP('10.0.0.0/23'), IP('10.0.3.0/24'), IP('10.0.2.0/24')])
        IPSet([IP('10.0.0.0/22')])
        >>> s = IPSet([IP('10.0.0.0/22')])
        >>> s.add(IP('192.168.1.0/29'))
        >>> s
        IPSet([IP('10.0.0.0/22'), IP('192.168.1.0/29')])
        >>> s.discard(IP('192.168.1.2'))
        >>> s
        IPSet([IP('10.0.0.0/22'), IP('192.168.1.0/31'), IP('192.168.1.3'), IP('192.168.1.4/30')])
    
    IPSet supports the `set` method `isdisjoint`:
    
        >>> s.isdisjoint(IPSet([IP('192.168.0.0/16')]))
        False
        >>> s.isdisjoint(IPSet([IP('172.16.0.0/12')]))
        True
    
    IPSet supports intersection:
    
        >>> s & IPSet([IP('10.0.0.0/8')])
        IPSet([IP('10.0.0.0/22')])
    
    Compatibility and links
    =======================
    
    IPy 0.83 works on Python version 2.6 - 3.4.
    
    The IP module should work in Python 2.5 as long as the subtraction operation
    is not used. IPSet requires features of the collecitons class which appear
    in Python 2.6, though they can be backported.
    
    Eratta
    ======
    
    When using IPv6 addresses, it is best to compare using IP().len() instead of
    len(IP). Addresses with an integer value > 64 bits can break the 2nd method.
    See http://stackoverflow.com/questions/15650878 for more info.
    
    Fuzz testing for IPSet will throw spurious errors when the IPSet module
    combines two smaller prefixes into a larger prefix that matches the random
    prefix tested against.
    
    This Python module is under BSD license: see COPYING file.
    
    Further Information might be available at:
    https://github.com/autocracy/python-ipy
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  • 原文地址:https://www.cnblogs.com/yuyue2014/p/4844004.html
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