在 python 中创建一个字典，其中包含 python 中的键和值列表

Question

I have the dictionary

list = ["1", "2", "3"]

and a single key. now i want to form a dictionary like:

dic = {"key": "1", "key": "2", "key": "3"}

Does anyone know how to do it?

---

I have tried:

list = ["1", "2", "3"]

dic = {}

for value in list:
    dic['key'] = value
    
print(dic)

But it returns:

{'key': '3'}

thanks, Marius.

Answer 1

Dictionary, by definition , can't have the same key twice.

Consider storing the values under the same key, using other kind of container, such as list, set or tuple:

{"key": ["1", "2", "3"]}

Answer 2

It's not possible, Python does not allow duplicate keys inside a dictionary. Keys act as unique identifiers thus Duplicate keys might lead to ambiguity.