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def jiujiu(func):
def chengfa():
print('未执行九九乘法')
res = func()
print('九九乘法已打印完成')
return res
return chengfa()
@jiujiu
def jiujiuchengfa():
for i in range(1, 10):
for j in range(1, i + 1):
print("%s * %s = %s" % (j, i, j * i), end=" ")
print("")
if __name__ == '__main__':
jiujiuchengfa()
执行结果:Traceback (most recent call last):
File "D:\Project\git-test-lmf\p01\m_01.py", line 370, in <module>
jiujiuchengfa()
TypeError: 'NoneType' object is not callable
未执行九九乘法
1 * 1 = 1
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81
九九乘法已打印完成
求救,这里为什么会报错‘NoneType',明明已经执行完成了
本帖最后由 jackz007 于 2022-11-18 12:05 编辑 return chengfa # 这一句有错已经改正,这个是闭包,要去掉括号,目的为了把内嵌函数公开,让外边可以随便调用
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