pythonでごま塩ノイズを付与したい

Question

前提・実現したいこと

repl.itを使ってpythonで画像にごま塩ノイズを付与したいと考えていますがエラーが出てプログラムが止まってしまいます。解決方法を知りたいです。

追記
ここまでやってみたのですがここからやり方がわからないです。

発生している問題・エラーメッセージ

Matplotlib created a temporary config/cache directory at /tmp/matplotlib-efhx3r0k because the default path (/config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.

該当のソースコード

import numpy as np
import cv2
import matplotlib.pyplot as plt

img = cv2.imread("a.jpg", 1)
img = cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
plt.imshow(img)
plt.show()

row,col,ch = img.shape

pts_x = np.random.randint(0, col-1 , 1000)
pts_y = np.random.randint(0, row-1 , 1000)
img[(pts_y,pts_x)] = (255,255,255)

plt.imshow(img)
plt.show()

[[package]]
category = "main"
description = "Wrapper package for OpenCV python bindings."
name = "opencv-python"
optional = false
python-versions = ">=3.6"
version = "4.5.1.48"

[metadata]
content-hash = "7a4d72d9e48996e5272098c51f9d04ce746f1f573c80c0287106c13e16924551"
python-versions = "^3.8"

[metadata.files]
opencv-python = [
    {file = "opencv-python-4.5.1.48.tar.gz", hash = "sha256:78a6db8467639383caedf1d111da3510a4ee1a0aacf2117821cae2ee8f92ce37"},
    {file = "opencv_python-4.5.1.48-cp36-cp36m-macosx_10_13_x86_64.whl", hash = "sha256:bcb27773cfd5340b2b599b303d9f5499838ef4780c20c038f6030175408c64df"},
    {file = "opencv_python-4.5.1.48-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:9646875c501788b1b098f282d777b667d6da69801739504f1b2fd1268970d1da"},
    {file = "opencv_python-4.5.1.48-cp36-cp36m-manylinux2014_i686.whl", hash = "sha256:ebe83901971a6755512424c4fe9f63341cca501b7c497bf608dd38ee31ba3f4c"},
    {file = "opencv_python-4.5.1.48-cp36-cp36m-manylinux2014_x86_64.whl", hash = "sha256:d8aefcb30b71064dbbaa2b0ace161a36464c29375a83998fbda39a1d1740f942"},
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    {file = "opencv_python-4.5.1.48-cp37-cp37m-macosx_10_13_x86_64.whl", hash = "sha256:4982fa8ccc38310a2bd93e06334ba090b12b6aff2f6fcb8ff9613e3c9bc48f48"},
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]

[tool.poetry]
name = "severalfinishedarchives"
version = "0.1.0"
description = ""
authors = ["Your Name <[e-mail]>"]

[tool.poetry.dependencies]
python = "^3.8"
opencv-python = "^4.5.1"

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

Comments

[ppaul]

Matplotlib created a temporary ・・・
は警告でエラーではありません。
止まるとすると、他の原因があるはずですので、それを示してください。

Answer 1

google翻訳
デフォルトのパス（/ config / matplotlib）は書き込み可能なディレクトリではないため、Matplotlibは/ tmp / matplotlib-efhx3r0kに一時的なconfig / cacheディレクトリを作成しました。特にMatplotlibのインポートを高速化し、マルチプロセッシングをより適切にサポートするために、MPLCONFIGDIR環境変数を書き込み可能なディレクトリに設定することを強くお勧めします。