auth = HTTPBasicAuth()

@app.route("/clothesInfo")
@auth.login_required
def show_info():
    return jsonify(blah blah blah)

auth = HTTPBasicAuth()

@auth.verify_password
def verify_password(username, password):
    if username == '' or password == '':
        # anonymous user, we still let them in
        g.current_user = None
        return True
    g.current_user = my_verify_function(username, password)
    return g.current_user is not None

@app.route("/clothesInfo")
@auth.login_required
def show_info():
    if g.current_user:
        # prepare data for authenticated users here
        pass
    else:
        # prepare data for anonymous users here
        pass
    return jsonify(data)

# a dummy callable to execute the login_required logic
login_required_dummy_view = auth.login_required(lambda: None)

def is_authenticated():
    try:
        # default implementation returns a string error
        return login_required_dummy_view() is None
    except HTTPException:
        # in case auth_error_callback raises a real error
        return False

@app.route('/info')
def info():
    if is_authenticated():
        # logged in view

    else:
        # basic view