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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 setup(app):
 """ Sphinx extension to update the rendering context with the feedback form URL. Arguments: app (Sphinx):
 Application object for the Sphinx process Returns: a dictionary of metadata (http://www.sphinx-doc.org/en/stable/extdev/#extension-metadata) """

    event = 'html-page-context' if six.PY3 else b'html-page-context'
    app.connect(event, update_context)

    return {
        'parallel_read_safe': True,
        'parallel_write_safe': True,
        'version': __version__,
    }