def METHOD_NAME(oauth_params, uri):
    """Prepare the Request URI Query.
    Per `section 3.5.3`_ of the spec.
    .. _`section 3.5.3`: https://tools.ietf.org/html/rfc5849#section-3.5.3
    """
    # append OAuth params to the existing set of query components
    sch, net, path, par, query, fra = urlparse(uri)
    query = urlencode(
        _append_params(oauth_params, extract_params(query) or []))
    return urlunparse((sch, net, path, par, query, fra))