outcome_capture_function_result_or_exception_unwrap.py

1import outcome
2
3def greet(name):
4    if name == "world":
5        return "Hello world!"
6    else:
7        raise ValueError("I only greet the world")
8
9# Capture a successful return
10result_ok = outcome.capture(greet, "world")
11print(result_ok)  # ValueOutcome(value='Hello world!')
12
13# Capture an exception
14result_err = outcome.capture(greet, "everyone")
15print(result_err)  # ErrorOutcome(error=ValueError('I only greet the world'))
16
17# Unwrap the outcomes
18print(result_ok.unwrap())   # 'Hello world!'
19try:
20    result_err.unwrap()
21except ValueError as e:
22    print(f"Caught expected error: {e}")