In-depth analysis: How to use pip to change the source

Get started quickly: Detailed explanation of pip source change method, specific code examples are required

Introduction:
In the Python development process, it is very important to use pip to install third-party libraries. Common operations. However, due to network reasons, sometimes we encounter the problem of slow pip installation. This is because pip uses the official source by default, and the official source is sometimes restricted by the network. In order to solve this problem, we can increase the installation speed by changing the pip source. This article will introduce in detail how to get started quickly, improve the installation speed by changing the pip source, and provide specific code examples.

1. Check and back up the original pip source:
Before changing the pip source, we need to check the source currently being used so that we can restore the original settings when needed. We can run the following command to view the source currently in use:

pip config get global.index-url

This command will output the address of the source currently in use. To back up the current source settings, we can copy this address to a text file.

2. Select a new pip source:
Before selecting a new pip source, we need to understand some alternative sources. The following are some commonly used pip sources:

1. Tsinghua University mirror source: https://pypi.tuna.tsinghua.edu.cn/simple
2. Alibaba Cloud mirror source: http: //mirrors.aliyun.com/pypi/simple/
3. Douban source: https://pypi.douban.com/simple/

Choose a suitable one according to your needs backup source.

3. Change the pip source:
There are two ways to change the pip source, one is through the command line parameters, the other is through the configuration file. Below we will introduce these two methods respectively.

1. Change the pip source through command line parameters:

To change the pip source through command line parameters, we can add -i# when running the pip command ## or --index-url parameter, followed by the address of the new source. For example, to replace the pip source with the Tsinghua University mirror source, you can run the following command:

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

where

package name is the name of the third-party library to be installed.

Change the pip source through the configuration file:

To change the pip source through the configuration file, we need to edit the pip configuration file. Generally speaking, this file is saved in the

.pip folder in the current user directory, and the file name is pip.conf or pip.ini.

We can open the file with any text editor and add the following content to the file:

[global]
index-url = 新源的地址

where

The address of the new source is our chosen alternative The address of the source.

4. Restore the original pip source:

Sometimes, we may need to restore the pip source to its original settings. In order to do this, we just need to rewrite the source address of the previous backup into the pip configuration file. If you are using the source of command line parameter replacement, we only need to re-run the pip command without adding any parameters.

Conclusion:

By changing the pip source, we can improve the speed of pip installing third-party libraries. In this article, we detail how to get started quickly and provide specific code examples. Hope this article is helpful to you!

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