---
title: "enum"
url: https://perrotta.dev/2026/01/enum/
last_updated: 2026-01-04
---


**Problem statement**:

- with `auto()`
- without `auto()`
- without `Enum`

```python
from enum import Enum, auto

class Fruit(Enum):
    BANANA = auto()
    APPLE = auto()

class Color(Enum):
    GREEN = auto()
    ORANGE = auto()

f1: Fruit = Fruit.BANANA
f2: Fruit = Fruit.APPLE

assert f1 != f2

assert Fruit.BANANA != Color.GREEN

# Without auto
class Language(Enum):
    PYTHON = 1
    JAVA = 2

assert Language.PYTHON != Language.JAVA

# Enums do not allow reassignments
try:
    Language.PYTHON = 3
    assert False
except Exception:
    ...

# Without enum
PYTHON = 1
JAVA = 2

# Whereas plain variables do
PYTHON = 3
```