Does python dictionary have duplicate keys?

Question

I am trying to create a python dictiory with dupliate key as follows.

x = {"a" :1,"b":2,"z": 4, "c":90, "z":0, "k":None}
print(x["z"])

when i am calling key "z" value it is printing 0 why it is not printing 4? does it valid to have duplicat keys in dictionary?

What exactly are you asking? The code already demonstrates that there is only one value per key and that it is the last one assigned. — MisterMiyagi, Feb 03 '22 at 10:04
*"I am trying to create a python dictiory with dupliate key"* - and why would you do that? — Tomalak, Feb 03 '22 at 10:05
Does this answer your question? [Make a dictionary with duplicate keys in Python](https://stackoverflow.com/questions/10664856/make-a-dictionary-with-duplicate-keys-in-python) — MisterMiyagi, Feb 03 '22 at 10:14

score 0 · Answer 1 · answered Feb 03 '22 at 10:05

0

Keys within a dictionary in python are unique, therefore you cannot have duplicate keys. The reason you are getting "0" is that when you define "z" the second time in your dictionary, this key/value pair is overwriting your original pair.

answered Feb 03 '22 at 10:05

CodeCaffeinateContinue

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score 0 · Answer 2 · answered Feb 03 '22 at 10:10

0

Python dictionary does not supports multiple key. You can store multiple values on one key using a list. Something like:

dictionary = {
'a' : 1,
'z': [0, 4]
}

answered Feb 03 '22 at 10:10

Amir Haim Mizrahi

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Does python dictionary have duplicate keys?

2 Answers2