old_str=3
if type(old_str)==types.IntType:
  print("")

 
Traceback (most recent call last):
  File "C:/Users/Administrator/Desktop/111.py", line 2, in <module>
    if type(old_str)==types.IntType:
NameError: name 'types' is not defined


python 3.8.10下，书上程序中，intType也不行

‘types’没定义

types.IntType如何写  类型

# 需要导入模块: from schematics import types [as 别名]
# 或者: from schematics.types import IntType [as 别名]

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