Here is how to install specific package versions with pip in Python.

pip install example-package==2.0.1 

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To install a specific version of a package using pip in python, you can use the package name followed by the version number you want to install and use the == operator. In the above example, we are installing version 2.0.1 of the package 'example-package'.

You can also use comparison operators like >= or <= to specify a range of versions of a package to install, for example:

pip install example-package>=2.0.1
pip install example-package<=2.0.1

This will install all versions greater than or equal to 2.0.1 or less than or equal to 2.0.1 of the package 'example-package'.

You can also use the '~=' operator to specify a range of compatible versions, for example:

pip install example-package~=2.0

This will install any version of example-package that is compatible with version 2.0.

*Please note that the package must be available in the version you are specifying on the Python Package Index (PyPI) otherwise you will get an error.

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