根据一组给定的电影评分，使用Python找到平均得分最高的电影。
The Shawshank Redemption: 9.2
The Godfather: 9.1
The Dark Knight: 9.0
The Godfather: Part II: 9.0
以下是使用Python找到平均得分最高的电影的代码：

```python
movies = {
    'The Shawshank Redemption': 9.2,
    'The Godfather': 9.1,
    'The Dark Knight': 9.0,
    'The Godfather: Part II': 9.0
}

highest_rating = 0
highest_rated_movie = ''

for movie, rating in movies.items():
    if rating > highest_rating:
        highest_rating = rating
        highest_rated_movie = movie
        
print(highest_rated_movie) # The Shawshank Redemption 
```