"OverflowError:Python int太大，无法转换为C long"在Windows而非Mac上

问题描述

我正在Windows和Mac上运行完全相同的代码，并使用python 3.5 64位.

I am running the exact same code on both windows and mac, with python 3.5 64 bit.

在Windows上，它看起来像这样:

On windows, it looks like this:

>>> import numpy as np
>>> preds = np.zeros((1, 3), dtype=int)
>>> p = [6802256107, 5017549029, 3745804973]
>>> preds[0] = p
Traceback (most recent call last):
  File "<pyshell#13>", line 1, in <module>
    preds[0] = p
OverflowError: Python int too large to convert to C long

但是，此代码在我的Mac上正常工作.任何人都可以帮助解释原因或为Windows上的代码提供解决方案吗?非常感谢！

However, this code works fine on my mac. Could anyone help explain why or give a solution for the code on windows? Thanks so much!

推荐答案

一旦您的数字大于sys.maxsize，就会收到该错误:

You'll get that error once your numbers are greater than sys.maxsize:

>>> p = [sys.maxsize]
>>> preds[0] = p
>>> p = [sys.maxsize+1]
>>> preds[0] = p
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OverflowError: Python int too large to convert to C long

您可以通过以下方法确认这一点:

You can confirm this by checking:

>>> import sys
>>> sys.maxsize
2147483647

要更精确地获取数字，请不要在后台传递使用有界C整数的int类型.使用默认的float:

To take numbers with larger precision, don't pass an int type which uses a bounded C integer behind the scenes. Use the default float:

>>> preds = np.zeros((1, 3))

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