🕵️ Stack Trace Lineup

import asyncio

async def fetch():
    return 42

result = fetch()
print(result)

Traceback (most recent call last):
  File "lineup.py", line 6, in <module>
    result = fetch()
CoroutineNotAwaitedError: async function 'fetch' was called without 'await'

import threading

counter = 0
lock = threading.Lock()

def inc():
    global counter
    with lock:
        counter += 1

threads = [threading.Thread(target=inc) for _ in range(100)]
for t in threads: t.start()
for t in threads: t.join()
print(counter)

# (no error — lock makes it deterministic at 100)
100

from contextlib import suppress

with suppress(ValueError):
    int("not a number")

print("survived")

# (no error — suppress() catches ValueError silently)
survived

from typing import TypedDict

class User(TypedDict):
    name: str
    age: int

u: User = {"name": "Ada", "age": 36}
print(u["name"])

# (no error — TypedDict is just type-hint metadata at runtime)
Ada

class Box:
    def __enter__(self):
        print("enter")
        return self
    def __exit__(self, *args):
        print("exit")

with Box() as b:
    print("inside")

# (no error)
enter
inside
exit