python网络编程——将IPv4地址转换成不同的格式

1.将IPv4地址转换为32位二进制格式，用做底层网络函数。

import socket
from binascii import hexlify


def convert_IPv4_address():   # 定义convert_IPv4_address()函数
    for ip_addr in ['127.0.0.1', '192.168.0.1']:
        packed_ip_addr = socket.inet_aton(ip_addr)  # 将对应的IP地址转换为32—bit的封装包
        unpacked_ip_addr = socket.inet_ntoa(packed_ip_addr)   # 将对应的32-bit的封装包转换为IP地址的标准点号分隔字符串
        print("IP Address: %s => packed: %s, Unpacked: %s" % (ip_addr, hexlify(packed_ip_addr), unpacked_ip_addr))


if __name__ == '__main__':
    convert_IPv4_address()

2. .inet_aton()和inet_ntoa()及hexlify()解释

def inet_aton(string):  # real signature unknown; restored from __doc__
    """
    inet_aton(string) -> bytes giving packed 32-bit IP representation

    Convert an IP address in string format (123.45.67.89) to the 32-bit packed
    binary format used in low-level network functions.
    """
    return b""
    """将ip地址的4段地址分别进行2进制转化，输出用16进制表示
    >>> import socket
    >>> from binascii import hexlify
    >>> a = socket.inet_aton('192.168.1.1')
    >>> c=  hexlify(a)
    >>> c
    b'c0a80101'
    """



def inet_ntoa(packed_ip):  # real signature unknown; restored from __doc__
    """
    inet_ntoa(packed_ip) -> ip_address_string

    Convert an IP address from 32-bit packed binary format to string format
    """
    pass
    """转换32位打包的IPV4地址转换为IP地址的标准点号分隔字符串表示。"""

def hexlify(data):  # known case of binascii.hexlify
    """
    Hexadecimal representation of binary data.

    The return value is a bytes object.
    """
    return b""
    """用十六进制形式表示二进制"""