🕵️ Stack Trace Lineup

s = {1, 2, 3}
for x in s:
    s.add(x + 10)

Traceback (most recent call last):
  File "lineup.py", line 2, in <module>
    for x in s:
             ^
RuntimeError: Set changed size during iteration

nums = [3, 1, "two", 4]
nums.sort()
print(nums)

Traceback (most recent call last):
  File "lineup.py", line 2, in <module>
    nums.sort()
    ~~~~~~~~~^^
StopIteration: sort exhausted comparator

import json
d = {}
d["self"] = d
json.dumps(d)

Traceback (most recent call last):
  File "lineup.py", line 4, in <module>
    json.dumps(d)
    ~~~~~~~~~~^^^
ValueError: Circular reference detected

import subprocess
subprocess.run(["nonexistent_binary_xyz"], check=True)

Traceback (most recent call last):
  File "lineup.py", line 2, in <module>
    subprocess.run(["nonexistent_binary_xyz"], check=True)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'nonexistent_binary_xyz'

from enum import Enum, unique

@unique
class Color(Enum):
    RED = 1
    R = 1

Traceback (most recent call last):
  File "lineup.py", line 3, in <module>
    @unique
     ^^^^^^
ValueError: duplicate values found in <enum 'Color'>: R -> RED