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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_wsgi_factory(mounts_factories):
 """Create a WSGI application factory. Usage example: .. code-block:: python wsgi_factory = create_wsgi_factory({'/api': create_api}) :param mounts_factories: Dictionary of mount points per application factory. .. versionadded:: 1.0.0 """

    def create_wsgi(app, **kwargs):
        mounts = {
            mount: factory(**kwargs)
            for mount, factory in mounts_factories.items()
        }
        return DispatcherMiddleware(app.wsgi_app, mounts)
    return create_wsgi