How to Use Python Loops

Loops are a powerful tool in any programming language. They allow you to repeat a block of code a certain number of times or until a certain condition is met.

Python has two types of loops: for loops and while loops.

For loops

For loops are used to iterate over a sequence of objects. For example, you could use a for loop to iterate over a list of items and print each item to the console.

The syntax for a for loop is as follows:

for <variable> in <sequence>:
    <block of code>

The variable is used to store the current item in the sequence. The sequence is the list of items that you want to iterate over.

my_list = ["Alice", "Bob", "Carol"]

for name in my_list:
    print(name)

This code will print the following output to the console:

Alice
Bob
Carol

While loops

While loops are used to repeat a block of code until a condition is met. For example, you could use a while loop to read lines from a file until the end of the file is reached.

The syntax for a while loop is as follows:

while <condition>:
    <block of code>