相关疑难解决方法(0)

我有一个字典列表,我需要从字典中获取给定键的值列表(所有字典都有相同的键).

例如,我有:

l = [ { "key": 1, "Val1": 'val1 from element 1', "Val2": 'val2 from element 1' }, 
      { "key": 2, "Val1": 'val1 from element 2', "Val2": 'val2 from element 2' }, 
      { "key": 3, "Val1": 'val1 from element 3', "Val2": 'val2 from element 3' } ]

我需要得到1分,2分,3分.

当然,我可以得到它:

v=[]
for i in l:
    v.append(i['key'])

但我想有一个更好的方法来做到这一点.