Shopify api returns nothing when there really is data

Question

Using the Python shopify API, I create a session and try to fetch all orders for a store. The code looks like this:

import shopify
import pprint
import logging

logger=logging.getLogger(__name__)

shopify.Session.setup(api_key=api_key, secret=api_secret)

session = shopify.Session(
    myshopify_domain, 
    api_version,
    access_token,
)

shopify.ShopifyResource.activate_session(session)

for order in shopify.Order.find():
    logger.info(pprint.pformat(order.to_dict()))

So shopify API clearly manages to create and use the session to fetch data successfully, as can be gandered from the log output:

2020-06-01 15:08:47 INFO (MainThread) [pyactiveresource.connection:257::_open()] - GET https://my-store.myshopify.com/admin/api/2020-01/orders.json
2020-06-01 15:08:47 INFO (MainThread) [pyactiveresource.connection:301::_open()] - --> 200 OK 13b

However, the returned list of orders is empty (as is also evident by the "13b" in the log).

But when I look in the shopify admin panel for this development store, I have several orders of varying states and with varying data. There should be at least 4 of them submitted within the last week.

And if I just open the URL mentioned in the log https://my-store.myshopify.com/admin/api/2020-01/orders.json (not the real URL) directly in the browser, I also see a bunch of data there.

To me this raises a few questions:

• How come no orders are returned when using the api, even though it seemingly authenticates fine?
• How could I possibly get data when opening the URL in the browser since I have no authentication set up there?

Any hints are welcome. Thanks!