Question

我有以下格式的字典：

{"key1": [{"title":"bla bla", "percentage": "0.3493"},{"title":"bla bla bla", "percentage":"0.293"}],
"key2": [{"title":"bla bla", "percentage": "0.635"},{"title":"bla bla bla", "percentage":"0.987"}]}

因此，基本上它是一本字典，其中包含字典列表作为值。

我想按百分比字段的降序对它进行排序-因此，对于以上示例，我想获得：

{"key1": [{"title":"bla bla", "percentage": "0.3493"},{"title":"bla bla bla", "percentage":"0.293"}],
"key2": [{"title":"bla bla bla", "percentage": "0.987"},{"title":"bla bla", "percentage":"0.635"}]}

我也想获得最高百分比的全局视图。例如：

“ key2”：{“标题”：“ bla bla bla”，“百分比”：“ 0.987”}
“ key2”：{“标题”：“ bla bla”，“百分比”：“ 0.635”}
“ key1”：{“标题”：“ bla bla”，“百分比”：“ 0.3493”}
“ key1”：{“标题”：“ bla bla bla”，“百分比”：“ 0.293”}

我研究了Python中的各种排序方式，但是我仍然不确定如何实现这一点。

Answer 1

我们将字典中每个键的值列表按键percentage的值降序排列，然后使用字典理解来重新创建字典

dct = {"key1": [{"title":"bla bla", "percentage": "0.3493"},{"title":"bla bla bla", "percentage":"0.293"}],
"key2": [{"title":"bla bla", "percentage": "0.635"},{"title":"bla bla bla", "percentage":"0.987"}]}

result = {key: sorted(value, key=lambda x:x['percentage'], reverse=True) for key, value in dct.items()}
print(result)

输出将为

{'key1': [{'title': 'bla bla', 'percentage': '0.3493'}, 
{'title': 'bla bla bla', 'percentage': '0.293'}], 
'key2': [{'title': 'bla bla bla', 'percentage': '0.987'}, 
{'title': 'bla bla', 'percentage': '0.635'}]}

对于全局视图，我们首先更新内部字典，以便在此处具有key属性。然后，我们通过合并所有值列表来创建值的整体列表（全局视图），然后按降序对它们进行排序

dct = {"key1": [{"title":"bla bla", "percentage": "0.3493"},{"title":"bla bla bla", "percentage":"0.293"}],
"key2": [{"title":"bla bla", "percentage": "0.635"},{"title":"bla bla bla", "percentage":"0.987"}]}

#Update inner dictionaries with the name of the key for each dictionary
for key, value in dct.items():
    for v in value:
        v.update({'key':key})

global_view = sorted([v for value in dct.values() for v in value], key=lambda x:x['percentage'], reverse=True)

print(global_view)

这里的输出将是

[
{'title': 'bla bla bla', 'percentage': '0.987', 'key': 'key2'}, 
{'title': 'bla bla', 'percentage': '0.635', 'key': 'key2'}, 
{'title': 'bla bla', 'percentage': '0.3493', 'key': 'key1'}, 
{'title': 'bla bla bla', 'percentage': '0.293', 'key': 'key1'}
]

排序字典，其中包含按值列出的字典列表

1 个答案: