仅从列表中的字典中提取值

如何解决仅从列表中的字典中提取值

如何从嵌套在列表中的每个字典中提取每个值？ 目前我坚持接受一个键的列表理解。

d = [e["key1"] for e in list]

样品

[{'key1': 'value1','key2': 'value2'},{'key3': 'value4','key4': 'value4'}]

需要获取

value1,value2,value3,value4

解决方法

>>> vals = []
>>> for d in d_list:
    vals += list(d.values())
        
>>> vals
['value1','value2','value4','value4']

,

通过 itertools 链 -

l  = [{'key1': 'value1','key2': 'value2'},{'key3': 'value4','key4': 'value4'}]

from itertools import chain
result = list(chain(*(item.values() for item in l)))

通过列表理解 -

result = [val for i in l for val in i.values()]

,

感谢所有人和@kaya3！

[x for d in list_of_dicts for x in d.values()]