Usage Guide: How to set up pip mirror source

Guidelines for the use of pip mirror source

With the popularity of the Python language and the expansion of its application fields, pip has become a commonly used package management tool for Python developers. However, due to the particularity of the domestic network environment, direct use of the official pip source is often slow, and it may even be impossible to download and install the package normally. In order to solve this problem, we can use domestic pip mirror sources to improve download speed and stability. This article will introduce in detail how to use the pip mirror source and provide specific code examples.

1. Choose the appropriate pip image source

Currently, there are multiple pip image sources in China to choose from. Commonly used ones include Tsinghua University, Alibaba Cloud, Douban, etc. These mirror sources have good performance in terms of speed and stability. We can choose a suitable mirror source according to our own needs. The following are the addresses of several commonly used pip mirror sources:

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

2. Configure pip mirror source

Before using pip, we need to configure pip's mirror source. The configuration method is as follows:

1. Open the command line window (Windows users can press Win R, enter cmd and press Enter) to enter the command line interface.
2. Enter the following command to configure the pip mirror source:

pip config set global.index-url 镜像源地址

Among them, replace the mirror source address with the appropriate mirror source address mentioned above. Suppose we choose the mirror source of Tsinghua University, then the configuration command is as follows:

pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

3. Verify whether the configuration is successful. Enter the following command:

pip config list

If the configured mirror source address is displayed in the output, the configuration is successful.

3. Use the pip mirror source to install the package

After configuring the pip mirror source, we can use it to install the package. The following are several commonly used installation commands and examples of their use:

1. Installation package:

pip install 包名

For example, the command to install the requests package is as follows:

pip install requests

2. Specify the version installation package:

pip install 包名==版本号

For example, the command to install the 2.2 version of django is as follows:

pip install django==2.2

3. Install the package from the requirements file:

pip install -r 要求文件路径

For example, the command to install all required packages from the requirements.txt file is as follows:

pip install -r requirements.txt

It should be noted that when using pip mirror source to install packages, there may be errors due to the mirror source. The update speed is not timely, causing some packages to fail to download normally, or the downloaded packages are inconsistent with the official source. Therefore, before using pip to install the package, we should ensure that the selected image source is reliable and regularly updated.

4. Switch back to the official pip source

Sometimes, we may need to switch back to the official pip source, or use other mirror sources. The configuration method is as follows:

1. Open the command line window and enter the command line interface.
2. Enter the following command to configure the pip mirror source:

pip config unset global.index-url

3. Verify whether it is successful. Enter the following command:

pip config list

If the mirror source address is not displayed in the output, the configuration is successful.

Summary:

This article introduces the method of using pip mirror source and provides specific code examples. By using the pip mirror source, we can improve the download speed and stability of the package and improve development efficiency. However, when choosing a mirror source, we should choose a reliable source and update it regularly. I hope this article will be helpful to everyone in using pip mirror source.

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