Python - Run For loop for specific number of times using range()

Run For loop for specific number of times using range() in Python

Python Ranges are used to generate a sequence of numbers.

If we can define a range such that it has n number of elements, where n is the number of iteration that we would like to run, then we can use this range object with For loop, and run this For loop for n times.

The syntax to define a range with n number of values is

range(n)

The above function call returns a range object whose start is 0, stop is n, and step value is 1. In other words, it contains the following sequence of integers.

0, 1, 2, 3, ..., n-1

To run a For loop for n times, in Python, you can use range(n) for the iterator in the For loop syntax as shown below.

for i in range(n):
    // your code

Now, let us go through some examples.

1. Repeat For loop for 5 times

In the following program, we define a range function that has five values from 0 to 4, and use it with a For loop to iterate the loop for five times.

Python Program

for i in range(5):
    print('Hello World')

Output

2. Repeat For loop for 10 times

In the following program, we define a range function that has ten values from 0 to 9, and use it with a For loop to iterate the loop for ten times. We shall print the counter (or the current value of the range) inside the loop.

Python Program

for i in range(10):
    print(i)

Output

Summary

In this tutorial of Python Ranges, we learned how to run a For loop for specific number of times using range() function.