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# For Append To Extend

#### Sourcery refactoring id: `for-append-to-extend`

#### Description

Replace a for append loop with list extend

#### Before

```python
games = []
for i in range(10):
    for j in range(10):
        if i != j:
            games.append(play(i, j))
```

#### After

```python
games = []
for i in range(10):
    games.extend(play(i, j) for j in range(10) if i != j)
```

#### Explanation

Instead of looping through an iterator and appending to the list, we can make
the intent clearer by explicitly stating that we are extending this list.