clear_subscriptions() wipes all active subscriptions in one call. Build it step by step:

Step 1 — Import the library

import icepython as ice

Step 2 — Start a subscription:

ice.get_quotes(['BRN 1!-ICE'], ['last'], subscribe=True)

Step 3 — Clear all active subscriptions when finished:

ice.clear_subscriptions()

Step 4 — Confirm none remain with get_subscriptions():

print(ice.get_subscriptions())

Output:

()