Sorting with lambda function for a key is not working

#1

Sorting with lambda function for a key is not working if set is in braces why?
eg:
a = [{“a”, 2}, {“b”, 1}, {“c”, 4}]
sorted(a, key = lambda x: x[1]) <- doesn’t work
b =[ (“jatin”, 2), (“b”, 1), (“c”, 4)]
sorted(b, key = lambda x: x[1]) -> works

#2

Curly braces there mean that it is a Set, Now sets in python are unordered collections, hence they do not support indexing, so they will raise an error. Where are tuples are ordered hence they have indexes and can work with the lambda function when applied

#3

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