Store up encountered python exceptions in a loop and then raise them all at the end

output.txt

4 * 2 = 8
3 * 2 = 6
Error processing num b - ValueError("invalid literal for int() with base 10: 'b'") - Traceback (most recent call last):
  File "/Users/aheiman/tmp/script.py", line 8, in <module>
    print(f"{num} * 2 = {int(num) * 2}")
ValueError: invalid literal for int() with base 10: 'b'

5 * 2 = 10
Error processing num f - ValueError("invalid literal for int() with base 10: 'f'") - Traceback (most recent call last):
  File "/Users/aheiman/tmp/script.py", line 8, in <module>
    print(f"{num} * 2 = {int(num) * 2}")
ValueError: invalid literal for int() with base 10: 'f'

6 * 2 = 12
Traceback (most recent call last):
  File "/Users/aheiman/tmp/script.py", line 14, in <module>
    raise Exception("Errors encountered:", errors)
Exception: ('Errors encountered:', [ValueError("invalid literal for int() with base 10: 'b'"), ValueError("invalid literal for int() with base 10: 'f'")])

script.py

import traceback

# Capture errors and do not raise until finished processing all items
errors = []

for num in [4, 3, "b", 5, "f", 6]:
    try:
        print(f"{num} * 2 = {int(num) * 2}")
    except Exception as e:
        print(f"Error processing num {num} - {repr(e)} - {traceback.format_exc()}")
        errors.append(e)

if errors:
    raise Exception("Errors encountered:", errors)