comefrom: <qiyuangong>751_IP_to_CIDR_2.py
code: def intToIP( x):
      return ".".join(str((x >> i) % 256)
                      for i in (24, 16, 8, 0))
masked: def sample_funcname ( var_0 ) :
      return ".".join ( str ( ( var_0 >> var_4 ) % 256 ) for var_4 in ( 24 , 16 , 8 , 0 ) )
  