human
Write me a the Python code you requested given the following:
Complete the below
def install_importhook(config):

    ''''Try to install the rewrite hook, raise SystemError if it fails.'
    '''
assistant
#Here is the Python code you requested.
    if (sys.platform.startswith('java') or (sys.version_info[:3] == (2, 6, 0))):
        raise SystemError('rewrite    not    supported')
    config._assertstate = AssertionState(config, 'rewrite')
    config._assertstate.hook = hook = rewrite.AssertionRewritingHook(config)
    sys.meta_path.insert(0, hook)
    config._assertstate.trace('installed    rewrite    import    hook')
    def undo():
        hook = config._assertstate.hook
        if ((hook is not None) and (hook in sys.meta_path)):
            sys.meta_path.remove(hook)
    config.add_cleanup(undo)
    return hook