在嵌套字典里添加字典

# 从 a_dict 变成 a
a_dict = {'key': {'inner_key': 'va'}, 'key2': {'inner_key2': 'va2'}} 
a_list = ['v1', 'v2'] 
a = {'key': {'inner_key': 'va', 'key2': 'v1'}, 'key2': {'inner_key2': 'va2', 'key2': 'v2'}} 

for vs, lv in zip(a_dict.values(), a_list):
    vs['key2'] = lv
    
print(a_dict)