类型错误:use() 在导入 matplotlib 时得到了意外的关键字参数“警告" [英] TypeError: use() got an unexpected keyword argument 'warn' when importing matplotlib

问题描述

我正在尝试学习 R markdown/notebook 来实现 R 和 Python 的代码块.我可以使用R达到合理的标准，但是我是Python的新手.我已经将 R markdown 下载到 R studio 并按照提示下载 miniconda 并这样做了.

I am attempting to learn R markdown / notebook to implement chunks of code which are R and Python. I can use R to a reasonable standard, but I am new to Python. I have downloaded R markdown to R studio and followed the prompts to download miniconda and did so.

我想作一个基本图，看看它是否有效.

I wanted to make a basic plot to see if it is working.

我点击插入一个新的Python块"

I click 'insert a new Python chunk'

然后将以下代码复制并粘贴到"Python块"中，该代码在使用Spyder环境的Python中可以正常工作.

Then copy and paste the following code into a 'Python chunk', which worked fine in Python using the Spyder environment.

import matplotlib.pyplot as plt 
x = [2, 4, 6, 8, 10, 12]
y = [1, 3, 5, 6, 9, 15] 
plt.plot(x, y)
plt.show()

返回以下错误:

Error in py_call_impl(callable, dots$args, dots$keywords) : 
  TypeError: use() got an unexpected keyword argument 'warn'

我在 r 块中使用以下内容安装了 matplotlib:

I had installed matplotlib using the following in an r chunk:

library(reticulate)
py_install("matplotlib")

我尝试使用以下方法将此块粘贴到Python块和R块中:

I have tried pasting this chunk into a Python chunk and an R chunk with:

{r,engine='python'}

但无济于事.我看不到有人有相同的错误，也看不到指定如何从Python导入的指南，这似乎都表明这些块是开箱即用的.如果我缺少明显的东西，我深表歉意.我确保已卸载所有其他版本的Python.任何建议都将不胜感激，因为我有一天希望能够在此东西中集成Python，R和bash脚本！

But to no avail. I can't see anyone having the same error or a guide specifying how to be able to import from Python, it all seems to show these chunks working straight out of the box. Apologies if I am missing something glaringly obvious. I have made sure all other versions of Python are uninstalled. Any advice would be greatly appreciated, as I one day hope to be able to integrate Python, R and bash scripts in this thing!

会话信息:

Windows 10, R version 3.6.3 (2020-02-29), R Studio Version 1.2.5001. R version 3.6.3 (2020-02-29)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18362)

Matrix products: default

locale:
[1] LC_COLLATE=English_United Kingdom.1252 
[2] LC_CTYPE=English_United Kingdom.1252   
[3] LC_MONETARY=English_United Kingdom.1252
[4] LC_NUMERIC=C                           
[5] LC_TIME=English_United Kingdom.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] knitr_1.28      reticulate_1.16

loaded via a namespace (and not attached):
[1] compiler_3.6.3  Matrix_1.2-18   tools_3.6.3     rappdirs_0.3.1 
[5] Rcpp_1.0.4.6    grid_3.6.3      jsonlite_1.6.1  xfun_0.9       
[9] lattice_0.20-38

推荐答案

使用网状纹理和matplotlib时，我遇到了完全相同的错误.

I had the exact same error when using reticulate and matplotlib.

我通过降级matplotlib版本来修复它，例如:

I fixed it by downgrading my matplotlib version, e.g.:

pip install matplotlib==3.2  

您可以通过运行 pip freeze 并找到 matplotlib 条目来验证 matplotlib 是否已降级.它应该看起来像 matplotlib==3.2.0.(也许可以尝试从r中执行此操作，因此可以确保您使用的是正确的python安装).

You can verify that matplotlib has been downgraded by running pip freeze and finding the matplotlib entry. It should look like matplotlib==3.2.0. (maybe try doing this from r, so you can be sure that you're working with the correct python installation).

我认为这个问题是由于在最新版本的 matplotlib 中从 matplotlib 函数中删除了warn"参数引起的，而 R/reticulate 假定该函数的行为较旧.

I think this issue is caused by the 'warn' parameter being removed from a matplotlib function in recent versions of matplotlib, and R/reticulate assumes the older behaviour of the function.

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