# coding=utf-8
"""
函數(shù)的實質(zhì)與屬性
1.函數(shù)是一個對象
2.函數(shù)執(zhí)行完成后內(nèi)部變量回收
3.函數(shù)屬性
4.函數(shù)返回值
"""
passline = 60
def func(val):
? if val >= passline:
? ? ?print('pass')
? else:
? ? ?print('faled')
? def in_fun():
? ? ?print(val)
? in_fun()
? return in_fun()

f = func(89)
f()
print(f.__closure__)

錯誤提示：

C:\Python27\python.exe C:/Users/vn7/PycharmProjects/Zlib/utils/base/function.py

Traceback (most recent call last):

pass

? File "C:/Users/vn7/PycharmProjects/Zlib/utils/base/function.py", line 21, in <module>

89

? ? f()

89

TypeError: 'NoneType' object is not callable

Process finished with exit code 1