# --*-- coding: utf-8 --*--
# create by xiaocaiji

while 1:
    str_ip = input("input a IP:")
    list_ip = str_ip.split('.')
    if len(list_ip) < 4:
        print("error IP")
    for i in list_ip:
        if int(i) > 256:
            print("error IP")
        elif int(i) < 0 :
            print("error IP")
    a = hex(int(list_ip[0]) * 256 + int(list_ip[1]))
    b = hex(int(list_ip[2]) * 256 + int(list_ip[3]))
    a_new = a.replace('0x','')
    b_new = b.replace('0x','')
    while len(a_new) < 4:
        a_new = '0' + a_new
        if len(a_new) == 4 :
            break
        # print(a_new)
    while len(b_new) < 4:
        b_new = '0' + b_new
        if len(b_new) == 4 :
            break
        # print(b_new)
    print("%s:%s"%(a_new.upper(),b_new.upper()))





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