Basic Data Structures

Basic Data Structures

1. Tuples

   • • Ordered • Unchangeable • Allows duplicates
     • Example: ("apple", True, "banana", 7)
       • Use square bracket notation with index to access elements in the tuple.

2. Lists

   • • Ordered • Changeable • Allows duplicates
     • Example: ["apple", True, "banana", 7]
       • Use remove or pop to delete list elements, and use square bracket notation with the index to access an element in a list.

3. Dictionaries

   • Uses key : value format
     • Example: carOnSale = { "brand" : "Toyota", "model" : "Corolla LE", "year" : 2018 }
       • Values can be of any type. To update a value, give the dictionary with key in brackets. i.e. myDictionary["keyName"] = "newValue". Values can be changed and updates many times.

4. Sets

   • • Unordered • Unchangeable • Rejects duplicates
     • Example: {"apple", True, "banana", 7}
       • Unordered so cannot be accessed by square bracket notation with index. Instead use a loop to view elements, or check if an element exists in the set by checking True or False. i.e. print( "element" in mySet)