Python Tips - 02

What is the output of the print(x) statements in the below example?

>>>x = set(("apple","banana","cherry"))

>>>print(x)

>>>x.add("orange") # adds a single element

>>>print(x)

>>>x.update(["pine apple", "mango", "grapes"]) # iterates over the sequence and adds elements in the sequence

>>>print(x)

output

{'cherry', 'banana', 'apple'}

{'cherry', 'banana', 'orange', 'apple'}

{'orange', 'apple', 'pine apple', 'banana', 'grapes', 'cherry', 'mango'}

Why the elements are not printed in specific order????

ANS: 

• set is an unordered collection of elements 
• set is mutable, iterable 
• set does not contain duplicate elements
• order of elements in a set is undefined