Python Tutorials
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Overview

A specific item cannot be accessed in a set by referring to an index or a key. To access items, a for loop or the in keyword can be used.

for Loop

cars = {"Ferrari", "Maserati", "Alfa Romeo"}

for x in cars:
	print(x)

Output:

Maserati
Alfa Romeo
Ferrari

Note

Sets are unordered, so you cannot be sure in which order the items will appear

in Keyword

Will return True if the item is in the set, and False if it is not.

cars = {"Ferrari", "Maserati", "Alfa Romeo"}

print("Maserati" in cars) #True

in Keyword (not in)

Will return True if the item is NOT in the set, and False if it is in the set.

cars = {"Ferrari", "Maserati", "Alfa Romeo"}

print("Maserati" not in cars) #False

Python Notes:

  • The most recent major version of Python is Python 3; however, Python 2 is still in use and quite popular, although not being updated with anything other than security updates
  • Python uses new lines to complete a command, as opposed to other programming languages which often use semicolons or parentheses
  • Python relies on indentation, using whitespace to define scope, such as the scope of loops, functions, and classes; other programming languages often use curly-brackets for this purpose
  • Python string methods return new values, and DO NOT change the original string
  • Python tuples are unchangeable after created (their items CANNOT be changed or re-ordered at a later point)
  • Python sets are unordered (may appear in random orders when called), unchangeable (the value of individual items cannot be changed after creation), and unindexed (items cannot be referred to by index or key)
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We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.