comefrom: <qiyuangong>093_Restore_IP_Addresses_2.py
code: def isValid( add):
      if len(add) == 1:
          return True
      if add[0] == '0':
          return False
      if int(add) <= 255:
          return True
      return False
masked: def sample_funcname ( var_0 ) :
      if len ( var_0 ) == 1 :
          return True
      if var_0 [ 0 ] == '0' :
          return False
      if int ( var_0 ) <= 255 :
          return True
      return False
  