🕵️ Stack Trace Lineup

import csv
with open("data.csv", encoding="utf-8") as f:
    reader = csv.DictReader(f)
    for row in reader:
        print(row["unknown_column"])

Traceback (most recent call last):
  File "lineup.py", line 5, in <module>
    print(row["unknown_column"])
          ~~~^^^^^^^^^^^^^^^^^^
KeyError: 'unknown_column'

from datetime import date
d = date.fromisoformat("not-a-date")
print(d)

Traceback (most recent call last):
  File "lineup.py", line 2, in <module>
    d = date.fromisoformat("not-a-date")
        ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
ValueError: Invalid isoformat string: 'not-a-date'

nums = [1, 2, 3]
filtered = filter(lambda x: x > 0, nums)
print(filtered[0])

Traceback (most recent call last):
  File "lineup.py", line 3, in <module>
    print(filtered[0])
          ~~~~~~~~^^^
TypeError: 'filter' object is not subscriptable

with open("test.txt", "w") as f:
    f.write("hello")
    f.close()
    f.write("world")

Traceback (most recent call last):
  File "lineup.py", line 4, in <module>
    f.write("world")
    ~~~~~~~^^^^^^^^^
ValueError: I/O operation on closed file.

import asyncio

def sync_fn():
    result = await asyncio.sleep(1)
    return result

sync_fn()

Traceback (most recent call last):
  File "lineup.py", line 7, in <module>
    sync_fn()
    ~~~~~~~^^
  File "lineup.py", line 4, in sync_fn
    result = await asyncio.sleep(1)
RuntimeError: 'await' allowed only in async function