Python 2 installs pip step by step, easy to learn!

Complete guide to installing pip for Python2, easy to master!

When developing in Python, various third-party libraries are often used to provide more functions and tools. As a package management tool for Python, pip greatly simplifies the installation process of third-party libraries. This article will introduce how to install pip in Python2, and demonstrate it through specific code examples to help you easily master the use of pip.

1. Preparation
Before starting to install pip, you need to make sure that Python2 has been installed. You can check the Python version by opening a terminal and entering the following command:

python --version

If the command line displays the Python version information, Python has been installed successfully.

2. Download the pip installation script
The installation process of pip is very simple. We can install it by downloading and running the pip installation script. You can use the following command to download the installation script:

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

3. Run the installation script
After the download is completed, use the following command to run the installation script:

python get-pip.py

The installation script will automatically detect and Install pip in the Python2 installation directory.

4. Verify the installation results
After the installation is completed, you can use the following command to verify whether pip is installed successfully:

pip --version

If the command line displays the version information of pip, it means that pip has been successfully installed. Installed and working fine.

5. Use pip to install third-party libraries
After installing pip, you can install various third-party libraries through pip. The following is a specific example that demonstrates how to use pip to install a commonly used third-party library requests:

pip install requests

After running the above command, pip will automatically download and install the requests library from the official Python warehouse.

6. Upgrade pip
If you need to upgrade the installed pip version, you can use the following command to upgrade:

pip install --upgrade pip

This will automatically detect the latest version through pip and upgrade it.

7. Use pip to uninstall third-party libraries
If you need to uninstall an installed third-party library, you can use the following command to uninstall:

pip uninstall package_name

Among them, package_name is the name of the third-party library to be uninstalled.

8. Use pip to query the installed third-party libraries
If you need to query the list of installed third-party libraries in the current system, you can use the following command to query:

pip list

This A list of third-party libraries installed in the current system will be displayed.

Summary
Through the introduction of this article, I believe everyone has a certain understanding of how to install pip in Python2 and use pip to install and uninstall third-party libraries. The installation and use of pip is very simple, which can greatly improve the efficiency and convenience of Python development. I hope the content of this article can help everyone, so that everyone can easily master the use of pip!

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