def unquote_etag(etag):
    if not etag:
        return None, None
    etag = etag.strip()
    weak = False
    if etag[:2] in ('w/', 'W/'):
        weak = True
        etag = etag[2:]
    if etag[:1] == etag[-1:] == '"':
        etag = etag[1:-1]
    return etag, weak
Sends a PUT request. Returns :class:`Response` object.
dataset/ETHPy150Open Eforcers/gae-flask-todo/lib/werkzeug/http.py/unquote_etag--crossover with--dataset/ETHPy150Open Bolton-and-Menk-GIS/restapi/restapi/requests/api.py/put