Improve development efficiency: Python update pip tutorial!

Python update pip tutorial: quickly improve development efficiency!

As a Python developer, we all know that pip is a package manager for Python, which can help us install, upgrade and uninstall Python packages quickly and easily. However, since pip sometimes fails to install packages and is slow, development efficiency is affected. Therefore, this article will introduce in detail how to update pip to improve our development efficiency.

1. Check the pip version

Before upgrading pip, we need to check our current pip version. Enter the following command in the command line window:

pip --version

The output result is as follows:

pip 20.0.2 from c:usersxxxppdatalocalprogramspythonpython38libsite-packagespip (python 3.8)

The above result shows that my pip version is 20.0.2. We can confirm our current situation based on the actual situation. pip version number.

2. Upgrade pip

We can upgrade pip in the following two ways.

1. Use pip to upgrade

First, we can use pip itself to upgrade. Enter the following command in the command line window:

pip install --upgrade pip

After executing the above command, pip will start to upgrade. After the upgrade is completed, you can verify it with the following command:

pip --version

If pip has been successfully upgraded, The output should be the new version number.

2. Manually upgrade pip

Of course, if the above command cannot upgrade pip, we can upgrade it manually. The upgrade steps are as follows:

1) Download get-pip.py. get-pip.py is a Python script used to install pip. We can download the latest version of the get-pip.py file on the official website (https://bootstrap.pypa.io/get-pip.py). For example, in Windows systems, we can open the above link in the browser and then use the "Save As" command to save it locally.

2) Open the command line window. In Windows systems, we can use the Windows key R key to open the run window, enter "cmd" and press Enter to open the command line window.

3) Use the cd command to enter the directory where the get-pip.py file is located.

For example, if we save the get-pip.py file in the root directory of drive C, then we can use the following command to enter the root directory of drive C.

cd C:

4) Run the get-pip.py file to install.

Enter the following command in the command line window:

python get-pip.py

After executing the above command, the command line window will display the installation progress of the pip package. After waiting for the installation to complete, you can use the following command to verify:

pip --version

If pip has been successfully upgraded, the output result should be the new version number.

3. Uninstall pip

In some cases, we may need to uninstall pip. For example, we want to uninstall an old version of pip to prevent an upgrade from going wrong. Enter the following command in the command line window:

pip uninstall pip

After entering the above command, pip will prompt whether to uninstall pip. We can select "y" or "n" to determine whether to uninstall. After confirming the uninstallation, pip will be deleted.

4. Improve the download speed of pip

In the process of upgrading pip, we may encounter the problem of slow download speed. In this case, we can improve the download speed through the following methods.

1. Change the domestic mirror source

Since the original pip download speed may be affected by the wall, we can choose to use the domestic mirror source for downloading. Among domestic mirror sources, the more commonly used ones are those of Tsinghua University, Alibaba and the University of Science and Technology of China.

The following command can modify the default image source of pip:

• Tsinghua image:

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

• Alibaba image:

pip install pip -i https://mirrors.aliyun.com/pypi/simple/

• University of Science and Technology of China Mirror:

pip install pip -i https://pypi.mirrors.ustc.edu.cn/simple/

2. Use pip’s accelerator

In addition to changing domestic mirror sources, we can also use pip’s accelerator to increase download speed . Commonly used pip accelerators include pipenv and cnpm. Here we take pipenv as an example to introduce how to use pipenv to accelerate pip.

First, enter the following command in the command line window to install pipenv:

pip install pipenv

After the installation is completed, we can use the following command to configure pipenv acceleration:

pipenv --pypi-mirror https://pypi.tuna.tsinghua.edu.cn/simple

After the configuration is completed, We can use pipenv to install Python packages to increase download speed. For example:

pipenv install Django

The above command will automatically install the latest version of Django and download it using the configured accelerator, thereby increasing the download speed.

Summary:

Through the introduction of this article, we learned how to update, uninstall pip and improve the download speed of pip. In daily Python development, these skills can help us improve development efficiency and make Python programming more smooth and efficient.

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