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Checking whether a number is odd or even is one of the most common programming exercises for beginners learning Python. It helps you understand conditional statements, operators, and the concept of remainders in division. Python makes this task simple and efficient with the use of the modulo operator.
When a number is divided by another number, the modulo operator (%) returns the remainder of that division. For checking if a number is even or odd, you can divide it by 2 and observe the remainder. If the remainder is zero, the number is even; otherwise, it is odd.
Here’s a simple example:
number = int(input("Enter a number: "))
if number % 2 == 0:
print("The number is even")
else:
print("The number is odd")
In this example, the input function takes a number from the user. The program checks whether the number is evenly divisible by 2 using the modulo operator. If there is no remainder, it prints that the number is even. Otherwise, it declares it as odd.
This approach is not limited to whole numbers typed by a user. You can also apply the same logic when working with lists, loops, or even large datasets. For example, when filtering data, you might need to identify all even or odd numbers from a collection. Python’s conditional logic and iteration make this very straightforward.
For instance, you can use a for loop to check multiple numbers:
numbers = [10, 15, 22, 33, 48]
for num in numbers:
if num % 2 == 0:
print(num, "is even")
else:
print(num, "is odd")
This simple method can be applied to a wide range of programming problems — from mathematical calculations to algorithm design. Understanding how to check if a number is odd or even in Python also strengthens your foundation in logical reasoning and conditional decision-making, which are essential skills for any programmer.
Python’s readability makes this process easy to learn, even for those new to coding. Once you grasp how the modulo operator works, you can handle similar logical tasks such as checking divisibility by other numbers or applying conditions in loops and functions.
To explore more Python examples and coding practices, visit the official guide here: https://docs.vultr.com/python/examples/check-if-a-number-is-odd-or-even
This reference explains the concept clearly and provides hands-on examples that you can try directly in your Python environment. Learning this small but important concept gives you a solid base to build more complex programs with confidence.

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