python - 将字典键作为参数传递给函数 python

Question

我有一个嵌套字典，并且有一个用例，我需要通过将嵌套字典中的某个键传递给函数来更新它。请参阅下面的代码示例:

sample_dict = {
    'a':{'b':{'c':"Bye"},'f':{'d':"Tata"}},'g':{'e':"SeeYou"}
}

def value_modifier(key,new_value):
    key = new_value
    
value_modifier(sample_dict['a']['b']['c'],new_value="Hi")
# here i know i am not passing the key but its value

print(sample_dict) # this prints the original sample_dict

# but i want my dict as below after my desired operation: 
{
    'a':{'b':{'c':"Hi"},'f':{'d':"Tata"}},'g':{'e':"SeeYou"}
}

我还寻找使用内存地址等的解决方案，但我无法更新我的sample_dict所需的键值。

Answer 1

您可以向函数传递 2 个参数:

sample_dict = {
    'a':{'b':{'c':"Bye"},'f':{'d':"Tata"}},'g':{'e':"SeeYou"}
}

def value_modifier(parent, key, new_value):
    parent[key] = new_value
    
value_modifier(sample_dict['a']['b'], 'c', new_value="Hi")

print(sample_dict)