函数嵌套调用
函数嵌套调用
def testB():
print('...B start..')
print('...do something in the B..')
print('...B end..')
def tesA():
print('..A start...')
testB()
print('..A end..')
testA()
def testB():
print('...B start..')
print('...do something in the B..')
print('...B end..')
def tesA():
print('..A start...')
testB()
print('..A end..')
testA()