如何将 python int 转换为 numpy.int64？
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How to convert python int into numpy.int64?
提问by ShanZhengYang
Given a variable in python of type int, e.g.
给定一个 python 类型的变量int，例如
z = 50
type(z)
## outputs <class 'int'>
is there a straightforward way to convert this variable into numpy.int64?
有没有一种直接的方法可以将此变量转换为numpy.int64？
It appears one would have to convert this variable into a numpy array, and then convert this into int64. That feels quite convoluted.
似乎必须将此变量转换为 numpy 数组，然后将其转换为 int64。感觉挺纠结的。
https://docs.scipy.org/doc/numpy-1.13.0/user/basics.types.html
https://docs.scipy.org/doc/numpy-1.13.0/user/basics.types.html
回答by user2357112 supports Monica
numpy.int64(z)
It's that simple. Make sure you have a good reason, though - there area few good reasons to do this, but most of the time, you can just use a regular intdirectly.
就这么简单。不过，请确保您有充分的理由 - 这样做有几个充分的理由，但大多数情况下，您可以直接使用常规int。
回答by sascha
import numpy as np
z = 3
z = np.dtype('int64').type(z)
print(type(z))
outputs:
输出：
<class 'numpy.int64'>
But i support Juliens question in his comment.
但我在他的评论中支持 Juliens 的问题。
