Exam JN0-221 topic 1 question 12 discussion

Exam code 221 was based on Python: 3.4+ (222 is Python: 3.6+). What this means is that dictionaries would be the answer as they were unordered, changeable (mutable) and do not allow duplicates in the version that exam was based on(3.4). If it was based on 3.7 nothing works because sets are unchangeable (not mutable).

D. sets question says "mutable" but must be wrong, must be "inmutable"

Set is Unordered and Unique

List items are ordered, changeable, and allow duplicate values - https://www.w3schools.com/python/python_lists.asp Tuple items are ordered, unchangeable, and allow duplicate values - https://www.w3schools.com/python/python_tuples.asp Set items are unordered, unchangeable, and do not allow duplicate values - https://www.w3schools.com/python/python_sets.asp Dictionary items are ordered, changeable, and does not allow duplicates. As of Python version 3.7, dictionaries are ordered. In Python 3.6 and earlier, dictionaries are unordered - https://www.w3schools.com/python/python_dictionaries.asp This question must be old, all answers seem incorrect.

https://stackoverflow.com/questions/14193438/are-python-sets-mutable/14193582

from the junioer website the question is immutable and we answer sets.. but this one mutable. Should we answer lists?

Answer definitely D. sets

Option D: Sets

Set is correct choice