如何对字典列表中的重复元素求和？
sample list :
data = [
[
{'user': 1, 'rating': 0},
{'user': 2, 'rating': 10},
{'user': 1, 'rating': 20},
{'user': 3, 'rating': 10}
],
[
{'user': 4, 'rating': 4},
{'user': 2, 'rating': 80},
{'user': 1, 'rating': 20},
{'user': 1, 'rating': 10}
],
]
预期输出:
op = [
[
{'user': 1, 'rating': 20},
{'user': 2, 'rating': 10},
{'user': 3, 'rating': 10}
],
[
{'user': 4, 'rating': 4},
{'user': 2, 'rating': 80},
{'user': 1, 'rating': 30},
],
]
最佳答案
与 pandas :
>>> import pandas as pd
>>> [pd.DataFrame(dicts).groupby('user', as_index=False, sort=False).sum().to_dict(orient='records') for dicts in data]
[[{'user': 1, 'rating': 20},
{'user': 2, 'rating': 10},
{'user': 3, 'rating': 10}],
[{'user': 4, 'rating': 4},
{'user': 2, 'rating': 80},
{'user': 1, 'rating': 30}]]
关于python - 使用通用键值对对字典列表中的值求和，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62102618/