polyfit()获得了意外的关键字参数"w" [英] polyfit() got an unexpected keyword argument 'w'

问题描述

我正在尝试使用np.polyfit，但我不断收到错误消息:

I'm trying to use np.polyfit and I keep getting the error:

TypeError: polyfit() got an unexpected keyword argument 'w'

该功能的文档明确提到了这一点论据，所以我不确定发生了什么.我正在使用SciPy 0.12.0和NumPy 1.6.1.

The documentation on that function clearly mentions this argument so I'm not sure whats going on. I'm using SciPy 0.12.0 and NumPy 1.6.1.

这是一个返回该错误的MWE:

Here's a MWE that returns that error:

import numpy as np

x = np.array([0.0, 1.0, 2.0, 3.0,  4.0,  5.0])
y = np.array([0.0, 0.8, 0.9, 0.1, -0.8, -1.0])
weight = np.array([0.2, 0.8, 0.4, 0.6, 0.1, 0.3])

poli = np.polyfit(x, y, 3, w=weight)

推荐答案

这是

This is the reference for your numpy version, the argument 'w' was only introduced in a later version.

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