Four Basic Data Structures

Four Basic Data Structures

1. Lists

   • [...,...,...]
   • ordered, changeable, allow for duplicates
   • can have multiple data types
   • append a list use: mylist.append('what i am addind')
   • remove an element use: mylist.pop(3)
   • To access an element in a list use: item=myList[2]

2. Sets

   • unordered, unchangeable,+ reject duplicate
   • {...,...,...}
   • elements with different data types
   • can't use indices to access sets but can loop to see the names in the set
   • you can also check if an element is in a set using the print function: it returns a true or false response
   • add elements using .add
   • merge sets by using .update

3. Tuples

   • (...,...,...)
   • used to store multiple items in a single variable
   • Ordered, unchangeable, and allow for duplicates
   • access and item: item=myTuple[2]
   • myTuple[-1] :returns the last item
   • myTuple[1:3] will return a subtuple

4. Dictionaries

   • {key1: value1, ... : ... }
   • used to store data in key: value format
   • these are very powerful structures to describe items
   • values can be any data type