pycharm A collection of common mistakes

（ If there are mistakes, thank you for your criticism and correction ）

1. Tips and types of operation

2.pycharm library

Anaconda+TensorFlow install （Windows）

3.pycharm Running environment

1） About the running environment and libraries

Points to understand ：
1. Python Running requires calling certain libraries
2. install anaconda,pycharm,Python, They usually bring their own Python, Load the warehouse in one of them , You have to reinstall it in the other one .（ I understand that different operating environments have different libraries Python）
therefore , stay pycharm Before running a file , You need to set its running environment （ That is, when there are different libraries Python Running inside , Select running environment , Is to select the collection of libraries , Select a collection of libraries that can run the target program ）.

Here are the differences Python The library in the library ：

I installed three software , These three software correspond to different Python

------（ among Python3.7 The library of ）

About the mismatch between the library and the library version

Some library pairs Python There are restrictions on the version , Running some libraries requires special Python edition . Of course as Python Version upgrade , Its original library may change .（ The in-depth content is still being explored ）

pycharm,anaconda Library installation failed

I am using pycharm, The interpreter uses anaconda, So the next method can be applied to both software problems .
Report errors ：（PackagesNotFoundError: The following packages are not available from current channels:）
terms of settlement ：

1. Search for open anaconda prompt,
2. python -m pip install Library name

Python Library downloads are slow or even stop

Link to the original text
Add a parameter after -i+ Mirror website , such as ：
The following address can be changed to domestic pip Mirror image ：

 Alibaba cloud  http://mirrors.aliyun.com/pypi/simple

 douban  http://pypi.douban.com/simple

 Tsinghua University   https://pypi.tuna.tsinghua.edu.cn/simple

 China University of science and technology   http://pypi.mirrors.ustc.edu.cn/simple

 Netease cloud   https://mirrors.163.com/pypi/simple
————————————————
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 Link to the original text ：https://blog.csdn.net/wjinjie/article/details/107225198

Example ：

pip install --user tensorflow 
pip install --user tensorflow -i https://pypi.tuna.tsinghua.edu.cn/simple

installation error Cannot determine archive format of

Error prone code ：

pip install opencv-python https://pypi.tuna.tsinghua.edu.cn/simple/

Error free code ：

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn opencv-python

cv2 Library installation method

original text

# When the download , This library is called  opencv-python, When quoting, it is called cv2
import cv2
pip install opencv-python