python 十进制 和 IP 地址互转

 #! /bin/python

 def ip2decimalism(ip):
     dec_value = 0
     v_list = ip.split('.')
     v_list.reverse()
     t = 1
     for v in v_list:
         dec_value += int(v) * t
         t = t * (2 ** 8)
     return dec_value

 def decimalism2ip(dec_value):
     ip = ''
     t = 2 ** 8
     for _ in range(4):
         v = dec_value % t
         ip = '.' + str(v) + ip
         dec_value = dec_value // t
     ip = ip[1:]
     return ip

 if __name__ == '__main__':
     dec_value = ip2decimalism('0.0.0.10')
     print(dec_value)

     ip = decimalism2ip(10)
     print(ip)