primes={1:2,2:3,4:5,6:11} print (primes [primes [4]]

Question

What is the output? And how? Explain plZ

Answer 1

Mhr Habib Great, you already have half or your answer by yourself. And Jomari explained why

Answer 2

Why don't you try it yourself?!

Answer 3

Its giving me a key error in the playground but in the lecture its gives output of 11

Answer 4

This would result in an error.

primes[4] resolves to 5, while primes[5] is missing.

Basically, what happens here is that the `thing` inside the bracket is the KEY for the dictionary to get its value.

primes[4] is 5 because you declared 4:5. primes[5] on the other hand is not present.

Answer 5

Jomari pantorilla have you seen the dictionary functon first question

Answer 6

@Mhr Habib What do you mean by if I "saw the dictionary function"?

Have you checked again if maybe you've made a typo? If 6:11 becomes 5:11 instead, then the expected output of 11 would be correct.

Answer 7

If it is indexing... Then my thinking is correct ...output is 11 ..

Answer 8

Oh. Maybe you're mixing up arrays and dicts?

Answer 9

Mhr Habib Dictionaries are unordered and don't support indexing. If you could use indices, you couldn't tell if primes[1] referred to the value with the key 1 (2) or the second value (3).

Since the prime number 7 is missing, I also think that the dictionary in your question is incomplete.