Python实现ipv6简写转为全写

之前在网上查找ipv6简写转为全写的python方法，全是C语言和java的方法，所以参考java的方法写了Python的实现方法。

函数代码如下：

def tran_ipv6(sim_ip):
    if  sim_ip == "::":
        return "0000:0000:0000:0000:0000:0000:0000:0000"
    ip_list=["0000","0000","0000","0000","0000","0000","0000","0000"]
    if sim_ip.startswith("::"):
        tmplist = sim_ip.split(":")
        for i in range(0, len(tmplist)):
            ip_list[i+8-len(tmplist)] = ("0000"+tmplist[i])[-4:]
    elif sim_ip.endswith("::"):
        tmplist = sim_ip.split(":")
        for i in range(0, len(tmplist)):
            ip_list[i] = ("0000"+tmplist[i])[-4:]
    elif "::" not in sim_ip:
        tmplist = sim_ip.split(":")
        for i in range(0,len(tmplist)):
            ip_list[i] = ("0000" + tmplist[i])[-4:]
    # elif sim_ip.index("::") > 0:
    else:
        tmplist = sim_ip.split("::")
        tmplist0 = tmplist[0].split(":")
        #print(tmplist0)
        for i in range(0, len(tmplist0)):
            ip_list[i] = ("0000" + tmplist0[i])[-4:]
        tmplist1 = tmplist[1].split(":")
        #print(tmplist1)
        for i in range(0, len(tmplist1)):
            ip_list[i + 8 - len(tmplist1)] = ("0000" + tmplist1[i])[-4:]
    # else:
    #     tmplist = sim_ip.split(":")
    #     for i in range(0,tmplist):
    #         ip_list[i] = ("0000" + tmplist[i])[-4:]
    #print(ip_list)
    return ":".join(ip_list)