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pip installation command analysis: To learn how to correctly install Python extension packages, specific code examples are required
Overview:
In the Python programming process, we often need to use Various expansion packs are available to help us complete various tasks. pip is Python's package manager, which can help us install, uninstall and manage extension packages quickly and easily. This article will introduce the basic use of pip and demonstrate how to correctly install Python extension packages through specific code examples.
$ sudo apt-get install python3-pip
$ pip3 install --upgrade pip
$ pip3 install package_name
Among them, package_name is to be installed The name of the expansion pack. The following are the names of some commonly used extension packages:
For example, to install the numpy extension package, just use the following command:
$ pip3 install numpy
$ pip3 install package_name==version
where version is the version number of the extension package to be installed. For example, to install version 1.18.5 of numpy, you can use the following command:
$ pip3 install numpy==1.18.5
$ pip3 uninstall package_name
Among them, package_name is the name of the expansion package to be uninstalled. For example, to uninstall the numpy extension package, you can use the following command:
$ pip3 uninstall numpy
$ pip3 list
This command will output a list of all installed extension packages in the current system.
$ pip3 install package_path
Where, package_path is the path where the expansion package is stored locally. For example, to install an extension package named mypackage stored in the current directory, you can use the following command:
$ pip3 install ./mypackage
Summary:
This article introduces the basic use of pip and demonstrates it through specific code examples Learn how to install Python extension packages correctly. By learning and mastering the use of pip, we can easily install various expansion packages and use these expansion packages to improve our development efficiency and programming capabilities. I hope this article will be helpful to everyone's learning and practice in Python programming.
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