python json

我要怎样才能拿到a的所有值呢？求解，困扰我半天了

# coding=UTF-8
import json

dict_s = {
    "1": {"a": "one"}, "2": {"a": "two"}, "3": {"a": "three"}
}
for d in dict_s:
    dic = d['a']
    print(dic)

import json

dict_s = {
    "1": {"a": "one"}, "2": {"a": "two"}, "3": {"a": "three"}
}
for d in dict_s: # d 在这里迭代出来的是 dict_s 的 key
    dic = dict_s[d]['a']
    print(dic)

写成这样。其它不变

for d in dict_s.values():

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