__repr__ vs __str__

Question

__repr__ vs __str__

Accepted Answer

When Python needs `__str__` and the class does not define it, the lookup falls back to `__repr__`. This means defining only `__repr__` covers both the developer view (REPL, `repr()`) and the user-facing view (`print()`, `str()`). The reverse is not true: defining only `__str__` still leaves `repr()` showing the default `<ClassName object at 0x...>` output.