Python – Print 123…N

Python Program to Print 123…N

In this tutorial, we shall read an integer (N) from user and print all the number from 1 to N to the standard console output.

We shall use looping statements like For Loop and While Loop, to iterate from 1 to N.

Example 1: Print 1 to N using For Loop

In this example, we shall use Python For Loop to print all the numbers from 1 to N.

Python Program

n = int(input('Enter N : '))

for i in range(1,n+1):
    print(i)

Output

Enter N : 4
1
2
3
4

Example 2: Print 1 to N using While Loop

In this example, we shall use Python While Loop to print all the numbers from 1 to N.

Python Program

n = int(input('Enter N : '))
i=1

while i<=n:
    print(i)
    i=i+1

Output

Enter N : 4
1
2
3
4

Summary

In this tutorial of Python Examples, we learned how to print all the numbers from 1 to N, for a given N, with the help of examples using for loop and while loop.