Print all Even Numbers in a Range - Python

Given a range of numbers, the task is to print all even numbers within that range. An even number is any number that is exactly divisible by 2 (i.e., remainder = 0).

For example:

Range: 1 to 10 -> Even numbers = 2, 4, 6, 8, 10
Range: 5 to 15 -> Even numbers = 6, 8, 10, 12, 14

Let’s explore different methods to print even numbers within a range.

Using range() with Step

The built-in range() function can also be used efficiently to print even numbers by setting a step value of 2. This avoids the need for an extra if condition.

s = 1
e = 10

for i in range(2, e + 1, 2):
    print(i)

2
4
6
8
10

Explanation:

• range(2, e + 1, 2) starts from 2 and increases by 2 each time.
• Only even numbers are generated no need for extra checks or conditions.

Using List Comprehension

List comprehension provides a concise way to filter even numbers and print them directly.

s = 1
e = 10

res = [i for i in range(s, e + 1) if i % 2 == 0]
print(res)

[2, 4, 6, 8, 10]

Explanation:

• The expression iterates through all numbers from s to e.
• The condition i % 2 == 0 ensures only even numbers are included in the list.

Using Loop

In this method we iterate through each number in the range and check divisibility by 2 using an if statement.

s = 1
e = 10

for i in range(s, e + 1):
    if i % 2 == 0:
        print(i)

2
4
6
8
10

Explanation:

• The loop checks each number between s and e.
• If the number gives zero remainder when divided by 2 (i % 2 == 0), it is even and printed.

Related Articles:

• Python For Loops
• List Comprehension in Python
• Python range() function