Let's Raise an Exception!

Now let's see Temporal in action!

We’ll now look at how Temporal retries your code. We’ll intentionally raise an exception in the withdraw_money Activity code.

In our case, this is just an exception we are intentionally raising, but this could just as easily be an internal service that isn't responding, a network outage, an application crashing, or more.

Activity Code

from temporalio import activity

@activity.defn
async def withdraw_money(amount: float) -> bool:
    raise Exception('Bank service temporarily unavailable')
    print(f"Successfully withdrawn ${amount}")
    return True

@activity.defn
async def deposit_money(amount: float) -> bool:
    print(f"Successfully deposited ${amount}")
    return True