按照他提示的代码输出整数5，为啥不走下面了，结果输出了param type error和None
def my_abs(x):
if not isinstance(x, int) or not isinstance(x, float):
print('param type error.')
return None
if x >= 0:
return x
else:
return -x
print(my_abs(5))
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def my_abs(x):
if not isinstance(x, int) or not isinstance(x, float):
print('param type error.')
return None
if x >= 0:
return x
else:
return -x
print(my_abs(5))
2021-05-25
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