Python Collections

• List is a collection which is ordered and changeable. Allows duplicate members. In Python lists are written with square brackets.

thislist = ["apple", "banana", "cherry"]

• Tuple is a collection which is ordered and unchangeable. Allows duplicate members. In Python tuples are written with round brackets.

thistuple = ("apple", "banana", "cherry")

• Set is a collection which is unordered and unindexed. No duplicate members. In Python sets are written with curly brackets. Sets are unordered, so the items will appear in a random order!

thisset = {"apple", "banana", "cherry"}

• Dictionary is a collection which is unordered, changeable and indexed. No duplicate members. In Python dictionaries are written with curly brackets, and they have keys and values.

thisdict = { "brand": "Ford", "model": "Mustang", "year": 1964 }