Python print Every n Loops - Python

Introduction

In Python, the print statement is used to display text or variables in the console. Sometimes, we may need to print every nth value or execute a specific block of code every nth loop. This can be achieved by using conditional statements or loop control statements like if or for loops.

Solution

Here are a few different approaches to print every n loops in Python:

Using Modulo Operator

One way to print every nth loop is by using the modulo operator. This operator returns the remainder of a division operation. By checking if the index variable is divisible by n with no remainder, we can determine if it is the nth loop.

n = 3  # Print every 3rd loop
for i in range(10):
    if i % n == 0:
        print(i)

Using a Counter Variable

Another approach is to use a counter variable and increment it at every loop. By checking if the counter variable is equal to n, we can print the desired output and reset the counter.

n = 3  # Print every 3rd loop
counter = 0

for i in range(10):
    counter += 1
    if counter == n:
        print(i)
        counter = 0

Using Enumerate Function

You can also use the enumerate() function to get both the index and value of each item in an iterable. By using the modulo operator on the index, we can print every nth loop.

n = 3  # Print every 3rd loop
items = ['a', 'b', 'c', 'd', 'e', 'f']

for index, item in enumerate(items):
    if index % n == 0:
        print(item)

Using a While Loop

If the number of iterations is unknown or if you prefer using a while loop, you can use a similar approach as the counter variable method.

n = 3  # Print every 3rd loop
counter = 0
i = 0

while i < 10:
    counter += 1
    if counter == n:
        print(i)
        counter = 0
    i += 1

Conclusion

Printing every nth loop in Python can be achieved using various methods like modulo operator, counter variable, enumerate function, or while loop. Choose the method that suits your specific requirements and coding style.