🚀 Python is fun for all ages! Today, let’s learn about the if condition in Python with easy-to-understand examples and outputs!
The if statement helps the computer make decisions just like we do in real life. Let’s explore with examples!
1. Basic If Condition
Example: Check if a number is positive.
num = int(input("Enter a number: "))
if num > 0:
print("This is a positive number!")
Input:
5
Output:
This is a positive number!
🔹 Explanation: If the number is greater than 0, the message is printed. Otherwise, nothing happens.
2. If-Else Condition
Example: Check if a number is positive or negative.
num = int(input("Enter a number: "))
if num > 0:
print("This is a positive number!")
else:
print("This is a negative number!")
Input:
'-3
Output:
This is a negative number!
🔹 Explanation: If the number is greater than 0, it prints “positive”; otherwise, it prints “negative”.
3. If-Else Condition
Example: Check if a number is positive, negative, or zero.
num = int(input("Enter a number: "))
if num > 0:
print("This is a positive number!")
elif num == 0:
print("This is zero!")
else:
print("This is a negative number!")
Input:
0
Output:
This is zero!
🔹 Explanation: If the number is greater than 0, it prints “positive”. If it is 0, it prints “zero”. Otherwise, it prints “negative”.
4. Nested If Condition
Example: Check if a person is eligible to vote
age = int(input("Enter your age: "))
if age >= 18:
if age >= 60:
print("You are a senior citizen and can vote!")
else:
print("You can vote!")
else:
print("You are too young to vote!")
Input:
65
Output:
You are a senior citizen and can vote!
🔹 Explanation: If the number is greater than 0, it prints “positive”. If it is 0, it prints “zero”. Otherwise, it prints “negative”.
5. Even or Odd Number Check
num = int(input("Enter a number: "))
if num % 2 == 0:
print("This is an even number!")
else:
print("This is an odd number!")
Input:
7
Output:
This is an odd number!
🔹 Explanation: If the number is divisible by 2, it’s even. Otherwise, it’s odd.
6.Check If a Year is a Leap Year
year = int(input("Enter a year: "))
if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
print("This is a leap year!")
else:
print("This is not a leap year!")
Input:
2024
Output:
This is a leap year!
🔹 Explanation: A year is a leap year if it is divisible by 4 but not by 100 unless also divisible by 400.
7. Check If a Person Can Enter a Theme Park Ride
height = int(input("Enter your height in cm: "))
if height >= 120:
print("You can go on the ride!")
else:
print("Sorry, you are not tall enough for the ride. ")
Input:
110
Output:
Sorry, you are not tall enough for the ride.
🔹 Explanation: If the height is 120 cm or more, the person can go on the ride. Otherwise, they cannot.
8. Check If a Student Passes the Exam
Example: Check if a person is eligible to vote
score = int(input("Enter your score: "))
if score >= 50:
print("Congratulations! You passed the exam! ")
else:
print("Sorry, you failed. Try again next time! ")
Input:
45
Output:
Sorry, you failed. Try again next time!
🔹 Explanation: If the score is 50 or more, the student passes; otherwise, they fail.
4. Check If a Number is Between Two Values
num = int(input("Enter a number: "))
if 10 <= num <= 20:
print("Your number is between 10 and 20!")
else:
print("Your number is outside the range!")
Input:
15
Output:
Your number is between 10 and 20!
🔹 Explanation:The condition 10 <= num <= 20 checks if the number falls within this range.
10. Simple Yes/No Decision Game
choice = input("Do you like Python? (yes/no): ").lower()
if choice == "yes":
print("That's awesome! Python is great! ")
else:
print("No worries! Maybe you'll like it someday! ")
Input:
yes
Output:
That's awesome! Python is great!
🔹 Explanation: The program asks for input and checks if the answer is “yes” or “no”.
Final Thoughts: Why If Condition is Important?
✅ The if condition allows us to make decisions in Python, just like in real life!
✅ You can use if, if-else, if-elif-else, and nested if conditions to create smart programs!
✅ These examples help beginners, students, and even adults learn Python easily!
🚀 Want more fun Python lessons? Comment below and share this post with friends! 😊 Happy Coding! 🐍💻