我正在学习Python，并且试图查看函数的行为是否符合我的预期。但是，我遇到了一个问题：
import numpy as np
def test():
return np.array([1, 2, 3])
type(test())
I would expect the output to be numpy.ndarray. However, I get nothing when I run this script.
I have tried different things instead of the type function; for example, print(test()) worked as expected. But for some reason the type function doesn't seem to work. Could you please enlightment me as to why? Thanks!
有两件事：
首先会打印“类'功能'”的实际测试类型
第二个（您的情况）实际上会调用该函数（因为您将其写为wih（），所以是test（）），因此将对返回值进行求值，而type将返回结果的类型，此处为“ class'numpy .ndarray'”
You need to print the output of
testto be able to see it. Try this:编辑：在Python的交互式控制台中，您无需打印内容就可以查看其输出，因此可能会使您有点失望：|