Parsing of the default storage directory for packages installed by pip

Revealing the storage directory of packages installed by pip requires specific code examples

Python is a popular programming language with a powerful ecosystem of third-party libraries and tools system, and pip is one of the Python package management tools. You can use pip to easily install, upgrade, and uninstall Python packages. For beginners, it is very useful to know the storage directory of packages installed by pip. This article will reveal the storage directory of pip's default installation package and provide relevant code examples.

Before we start, we need to understand some basic knowledge about pip.

pip is a Python package management tool that can automatically download, install, upgrade and uninstall Python packages. When we install a package through pip, it automatically downloads the package to local storage and installs it. pip can obtain package source code from the Python package index or other version control systems.

The installation process of pip is very simple, just enter the following command in the command line:

$ pip install 包名

The default installation directory of pip varies according to the operating system. The following will introduce the default installation directories of pip under different operating systems.

In Windows systems, by default, packages installed by pip are stored in the AppData folder of the user directory. You can view it through the following code example:

import site
print(site.getsitepackages())

Run the above code, a list will be output, and the elements in the list are the storage directories of pip's default installation packages. The sample output is as follows:

['C:\Users\Username\AppData\Local\Programs\Python\Python39\Lib\site-packages', 'C:\Users\Username\AppData\Roaming\Python\Python39\site-packages']

In Unix and Linux systems, the packages installed by pip are stored in the /usr/local/lib/pythonX.Y/dist-packages directory. Among them, X and Y represent the major version number and minor version number of Python respectively. The following is an example of viewing the default installation directory of pip:

import sysconfig
print(sysconfig.get_paths()["purelib"])

The sample output is as follows:

/usr/local/lib/python3.9/dist-packages

For macOS systems, the default installation directory of pip is also the same as Unix and Linux, that is, / usr/local/lib/pythonX.Y/dist-packages. This can be viewed using the same code examples as for Unix and Linux.

In addition to understanding the default package installation directory of pip, we can also change the storage location of pip installation packages by modifying environment variables. For example, in Windows systems, you can change the path of the pip installation package to a custom path. You can set it by following the following steps:

1. Create a new environment variable PYTHONPATH and set it Is a custom path, such as C:MyPythonPackages.
2. Create a new folder in this path to store the packages installed by pip.
3. Open the command prompt window and execute the following command:

$ pip config set global.target C:MyPythonPackages

After executing the above command, pip will install the package to the path C:MyPythonPackages .

Through the above method, we can customize the storage directory of the pip installation package to better manage our Python packages.

To summarize, pip is one of Python's package management tools. Packages installed through pip are stored in specific directories under different operating systems by default. Understanding pip's default package installation directory can help us better understand and manage third-party packages in Python. At the same time, we can also change the storage location of the pip installation package by modifying environment variables. I hope this article can reveal the directory where pip packages are stored, and help you better use Python and its various third-party libraries.

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