pip install index url vs extra index url

When working with Python projects, you often need to install third-party packages using a package manager like pip. pip provides several options to control the source of packages, including --index-url and --extra-index-url. In this tutorial, we will explore the differences between these two options and provide code examples to illustrate their usage.
The --index-url option in pip install allows you to specify the base URL of the Python Package Index (PyPI) or any other compatible package index. This is the primary source for locating and installing Python packages.
The --extra-index-url option allows you to specify additional package indexes to search for packages. This can be useful when you want to consider multiple sources for package installation.
In this example, --extra-index-url is used to specify an additional package index, and numpy will be installed, considering both the primary and extra indexes.
In summary, --index-url is used to set the primary package index, while --extra-index-url is used to specify additional indexes. These options provide flexibility when working with custom or private package indexes. Understanding how to use them can be beneficial in various scenarios, such as when dealing with internal package repositories or alternative package sources.
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