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Clarify mutation is allowed in high-scores #1195

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Merged
SleeplessByte merged 2 commits into from
Aug 5, 2019
Merged

Clarify mutation is allowed in high-scores #1195

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e142136
Clarify mutation is allowed in high-scores
Jul 29, 2019
757285e
Provided examples of solutions that mutate
Jul 30, 2019
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10 changes: 10 additions & 0 deletions tracks/python/exercises/high-scores/mentoring.md
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Expand Up @@ -48,6 +48,16 @@ Another variation of this solution includes the start at -1 for slicing the resu
return sorted(scores)[-1:-4:-1]
```

Since immutability has not yet been introduced, solutions that mutate the original list (`scores.pop()` or `scores.sort()`) are acceptable. However, take the opportunity to start introducing this concept in your comments.
```python
def latest(scores):
return scores.pop()

def personal_top_three(scores):
scores.sort(reverse=True)
return scores[:3]
```

### Common Suggestions

- Use **`sorted()`** over **`sort()`**. `sorted()` returns a _**copy**_ , `sort()` _**mutates in place**_.
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