Range() in a for Loop 2/2 | The for Loop
Python Loops Tutorial

## Range() in a for Loop 2/2

Note

In many of our tasks, we'll frequently employ a `counter` variable to facilitate basic arithmetic operations.

For instance, if we wish to sum 2 and 3, we'll initialize the `counter` with `counter = 0` and then add 2 and 3 to it: `counter = 0 + 2 + 3 = 5` => `counter = 5`.

The utilization of such variables is essential for managing straightforward mathematical operations effectively.

Take a look at the following code:

How does the code work?

We've previously seen an example of summing elements from 50 to 100 using an increasing list. Now, let's tackle this task with a decreasing list:

1. Establish a `for` loop, utilizing `i` as an element of the range and setting step = -1.
2. Execute the summation by adding the elements within the range.
3. Print the value of the `counter`.

Everything was clear?

Section 1. Chapter 3

Course Content

Python Loops Tutorial

## Range() in a for Loop 2/2

Note

In many of our tasks, we'll frequently employ a `counter` variable to facilitate basic arithmetic operations.

For instance, if we wish to sum 2 and 3, we'll initialize the `counter` with `counter = 0` and then add 2 and 3 to it: `counter = 0 + 2 + 3 = 5` => `counter = 5`.

The utilization of such variables is essential for managing straightforward mathematical operations effectively.

Take a look at the following code:

How does the code work?

1. Establish a `for` loop, utilizing `i` as an element of the range and setting step = -1.
3. Print the value of the `counter`.