我cache.memoize用来记忆Flask-Cache的功能。如何获取在修饰函数中设置的缓存键？如何在测试过程中测试该功能是否已缓存？
from flask import Flask
from flask.ext.cache import Cache
app = Flask(__name__)
cache = Cache(app, config={'CACHE_TYPE': 'simple'})
@cache.memoize(timeout=10)
def get_news(nid, lang=None):
return nid, lang
@app.route('/news/<str:nid>')
def news(news_id):
return 'News: ' + get_news(news_id)