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# Module: `core.magics.extension`

Implementation of magic functions for the extension machinery.

## 1 Class

class `IPython.core.magics.extension.``ExtensionMagics`(shell)

  Bases: `IPython.core.magic.Magics`

  Magics to manage the IPython extensions system.

  `install_ext`(parameter_s='')

    Download and install an extension from a URL, e.g.:

        %install_ext https://bitbucket.org/birkenfeld/ipython-physics/raw/d1310a2ab15d/physics.py

    The URL should point to an importable Python module - either a .py file or a .zip file.

    Parameters:

    > -n filename : Specify a name for the file, rather than taking it from
    >   the URL.

  `load_ext`(module_str)

    Load an IPython extension by its module name.

  `reload_ext`(module_str)

    Reload an IPython extension by its module name.

  `unload_ext`(module_str)

    Unload an IPython extension by its module name.

    Not all extensions can be unloaded, only those which define an `unload_ipython_extension` function.

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