“OverflowError: Python int too large to convert to C long&q

问题描述

我在 windows 和 mac 上运行完全相同的代码，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，这段代码在我的 mac 上运行良好.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

一旦你的数字大于 sys.maxsize，你就会得到这个错误:

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

您可以通过检查来确认:

You can confirm this by checking:

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

要获取更高精度的数字，请不要传递在后台使用有界 C 整数的 int 类型.使用默认浮点数:

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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