# Tuples — Python Fundamentals: From Basics to Async

Source: https://www.skillbyai.com/en/python/py-tuples

> Group fixed values with immutable tuples, unpack them and avoid the one-item tuple comma trap.

## Immutable by design

A **tuple** looks like a list but can't be changed after creation. Use it for data that shouldn't move.

```python
point = (10, 20)
name, age = ("Ada", 36)   # unpacking
print(point[0])           # 10
# point[0] = 99           # TypeError
```

## The trailing comma trap

A one-item tuple needs a trailing comma: `single = (5,)` — without it, `(5)` is just the int `5`.