Pip3 installation tutorial: start from scratch, guide you step by step installation

As a Python package manager, pip3 allows you to easily install various third-party libraries and frameworks, making Python programming more convenient. But if you are not clear about the installation steps of pip3, it may cause some problems that are difficult to solve. Therefore, in this article, we will explain the pip3 installation tutorial in detail from scratch and provide specific code examples so that you can easily master the pip3 installation method.

1. Install Python3

Before installing pip3, you need to install Python3 first. If you have already installed Python3, you can skip this step. The following is how to install Python3:

First, open the Python official website (https://www.python.org/downloads/) and download the latest Python3 installation package. Choose the version that suits your operating system and download it to your local computer.

After the download is completed, double-click the installation package and follow the prompts to install it step by step. During the installation process, you need to pay attention to confirm the installation path of Python3. Normally, you don't need to modify Python's default installation path.

After the installation is complete, open a terminal or command line window and enter the following command to check whether Python3 has been successfully installed:

python3 --version

If the installation is successful, the terminal/command line window will display the version number of Python3 . If an error message is displayed, you need to check whether your Python3 is installed normally.

2. Install pip3

pip3 is a Python package manager that can easily install and manage various third-party libraries and frameworks in the Python environment. Here's how to install pip3:

First, download the get-pip.py script. You can download the script from the following link, or download it directly from the official website:

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

The downloaded get-pip .py in your local directory, then open a command line window or terminal and enter the following command:

python3 get-pip.py

After executing this command, pip3 will automatically download and install in your Python3 environment. During the installation process, you may encounter some errors, and you need to fix them according to the prompts.

After the installation is completed, you can enter the following command to check whether pip3 has been installed successfully:

pip3 --version

If the version number of pip3 is displayed, it means that pip3 has been successfully installed.

3. Use pip3 to install third-party packages

After installing pip3, you can use it to install various third-party libraries and frameworks. The following is an example that demonstrates how to use pip3 to install the numpy library:

First, in the command line window or terminal, enter the following command to check whether the numpy library has been installed:

pip3 show numpy

If If the corresponding package is not found, it means that you have not installed the numpy library.

Next, enter the following command to use pip3 to install the numpy library:

pip3 install numpy

After executing this command, pip3 will automatically download the numpy library online and install it in your Python3 environment. During the installation process, you can see that pip3 will display the progress and status information of the current download.

After the installation is completed, you can enter the following command again to check whether the numpy library has been successfully installed:

pip3 show numpy

If the details of the successful installation of the numpy library are displayed, it means that you have successfully used it. pip3 to install third-party libraries.

When using pip3, you can also specify the version of the library, download from the specified source, etc. For specific usage, please refer to the official documentation of pip3.

Conclusion

Through the explanation of this article, you have learned about the pip3 installation tutorial and how to use it to install third-party libraries and frameworks. Although the use of pip3 is relatively simple, you still need to pay attention to some details in actual operation. I hope the explanation in this article can help you easily master the use of pip3 and make your Python programming work more convenient.

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