Python – Utilizing Operators
Python operators are used to perform various operations on variables and values.
Python – Creating and Using Lists
Python lists are used to store multiple items in a single variable.
Python – Accessing List Items
Python list items are indexed and can be accessed by referring to their index number.
Python – Changing List Items
Python list items are accessed and changed by referring to their index number.
Python – Adding List Items
Python list items are added to an existing list using the insert() method, append() method, or extend() method.
Python – Removing List Items
Python list items can be removed using the remove() method, pop() method, del keyword, or clear() method.
Python – Looping Through List Items
Looping through Python list items can be done by using a for loop, while loop, or list comprehension.
Python – Using List Comprehension
Python list comprehension offers a shorter syntax when you want to create a new list based on the values of an existing list.
Python – Sorting List Items
Python list items can be sorted using the sort() method in specified orders including reverse order.
Python – Copying Lists
Python lists can be copied to a new list using the copy() method, list() function, or slice operator.
Python – Joining Two or More Lists
There are several ways to join, or concatenate, two or more lists in Python.
Python – Creating and Using Tuples
Python tuples are used to store multiple items in a single variable, and unlike a list, are unchangeable.
Python – Accessing Tuple Items
Python tuple items are indexed and can be accessed by referring to their index number.
Python – Extracting Tuple Items to Variables
When creating a Python tuple, items are normally assigned to it (“packing” a tuple). Extracting the items into variables is called “unpacking” the tuple.
Python – Updating Tuples
Python tuples are unchangeable, meaning that you cannot change, add, or remove items once the tuple is created. But there are some workarounds.
Python – Looping Through a Tuple
Python tuple items can be looped through and accessed using a for loop or while loop.
Python – Creating and Using Sets
Python sets are used to store multiple items in a single variable, and unlike a list, are unordered, unchangeable, and unindexed.
Python – Accessing Items in a Set
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.
Python – Adding Items to a Set
Once a Python set is created, you cannot change its items, but you can add new items using the add() method and update() method.