Welcome to our Python Lists tutorial! In this video, we will cover the basics of lists in Python. Lists are a fundamental data structure in Python and are used to store collections of items.
What is a List?
A list in Python is a collection of items that can be of different data types. Lists are ordered and mutable, meaning you can add, remove, and change items in the list.
List Syntax
To create a list, you can use square brackets [] and separate items with commas.
my_list = [1, "apple", 3.14, True]
List Operations
Accessing Items
You can access items in a list by their index. The index starts at 0 for the first item.
print(my_list[0]) # Output: 1
print(my_list[1]) # Output: "apple"
Adding Items
To add an item to the end of a list, you can use the append() method.
my_list.append("banana")
print(my_list) # Output: [1, "apple", 3.14, True, "banana"]
Inserting Items
To insert an item at a specific position in a list, you can use the insert() method.
my_list.insert(2, "orange")
print(my_list) # Output: [1, "apple", "orange", 3.14, True, "banana"]
Removing Items
To remove an item from a list, you can use the remove() method.
my_list.remove("orange")
print(my_list) # Output: [1, "apple", 3.14, True, "banana"]
Looping Through a List
You can loop through a list using a for loop.
for item in my_list:
print(item)
Practice
To practice what you've learned, try creating your own list and performing the following operations:
- Add an item to the end of the list.
- Insert an item at the second position.
- Remove the first item.
- Loop through the list and print each item.
For more information on Python lists, check out our Python Lists Advanced Tutorial.