[vngzs]

You can use a closure to pass in the configuration.

    def configure_memcache(client_ip, port):
        client = pymemcache.client.Client((client_ip, port))
        @ring.memcache(client, expire=60)
        def get_url(url):
            return requests.get(url).content

        return get_url

Then in your code which imports the above library:

    get_url = configure_memcache('127.0.0.1', 11211)
    result = get_url('https://www.google.com')

[coleifer]

I'd rather have a sane API.

    def configure_ring():
        if DEBUG:
            return Ring(backend='debug')
        else:
            return Ring(backend='memcache', ...)

    ring = configure_ring()
    
    @ring.cache(expire=60)
    def get_url(...):
        ...

Tons of other libraries out there that implement this exact pattern.

[youknowone]

agree

[sametmax]

This assumes you define get_url().