Python操作字符串-截取IP地址

    ip = "192.168.18.152"
    #截取IP段前两段
    ip1 = str(re.findall(r'(?<!\d)\d{1,3}\.\d{1,3}(?=\.\d)', ip)[0])
    print(ip1)
    #截取IP段中间两段
    ip2 = re.findall(r'(?<=\d\.)\d{1,3}\.\d{1,3}(?=\.\d)', ip)[0]
    print(ip2)
    #截取IP段后两段段
    ip3 = re.findall(r'(?<=\d\.)\d{1,3}\.\d{1,3}(?!\d|\.)', ip)[0]
    print(ip3)
    #截取IP段第三段
    ip4 = str(re.findall(r'(?<=\d\.)\d{1,3}\.\d{1,3}(?!\d|\.)', ip)[0]).split('.')[0]
    print(ip4)
    #截取IP段最后段
    ip5 = str(ip).split('.')[-1]
    print(ip5)