簡單實現緩存

cache = {} #緩存位置
def get_data_from_server(url):
    return '請求鏈接數據爲'
def get__page(url):
    if cache.get(url):
        return cache[url]
    else:
        data = get_data_from_server(url)
        cache[url] = data
        return data