comefrom: <doocs>0093.Restore IP Addresses_1.py
code: def check(s):
      if not (0 <= int(s) <= 255):
          return False
      if s[0] == '0' and len(s) > 1:
          return False
      return True
masked: def sample_funcname ( var_0 ) :
      if not ( 0 <= int ( var_0 ) <= 255 ) :
          return False
      if var_0 [ 0 ] == '0' and len ( var_0 ) > 1 :
          return False
      return True
  