Python函数嵌套
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) on win32Type "copyright", "credits" or "license()" for more information.
>>> count=5
>>> def myFun():
count=22
print(count)
>>> myFun()
22
>>> print(count)
5
>>> def myFun():
global count
count=22
print(count)
>>> myFun()
22
>>> print(count)
22
>>> def FunX(x):
def funY(y):
return x*y
return funY
>>> def funX(x):
def funY(y):
return x*y
return funY
>>> funX(2)
<function funX.<locals>.funY at 0x000000F39D8D9D90>
>>> funY(3)
Traceback (most recent call last):
File "<pyshell#19>", line 1, in <module>
funY(3)
NameError: name 'funY' is not defined
>>> funX(2)(3)
6
>>> def funX(x):
def funY(y):
return x*y
>>> funX(2)(3)
Traceback (most recent call last):
File "<pyshell#23>", line 1, in <module>
funX(2)(3)
TypeError: 'NoneType' object is not callable
>>>
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