Pythonexit code > 0

KeyError

$KeyError: 'my_key'

Analysis

You tried to access a dictionary key that doesn't exist.

Common Triggers

  • Typo in key name.
  • Assuming data structure is populated when it's empty.

Debug Checks

  • $Print keys: print(my_dict.keys()).

Resolution

1
Use .get() for safe access: my_dict.get('key').
2
Check if key exists: if 'key' in my_dict:.