Python Conditional Statements

🔍 What Are Conditional Statements?

Conditional statements allow your Python programs to make decisions during execution based on conditions. These are also known as control flow statements.

✅ Syntax

if condition:
    # block of code if condition is true
elif another_condition:
    # block if the elif condition is true
else:
    # block if all conditions are false

📌 Example

age = 18

if age < 13:
    print("You are a child.")
elif age < 20:
    print("You are a teenager.")
else:
    print("You are an adult.")

Output: You are a teenager.

🧠 Use Cases

• Age-based category check
• Form validation
• Role-based access (admin, user, guest)
• Login authentication
• Grading system logic

💡 Nested if Statements

You can place one if inside another for deeper decision logic.

num = 15

if num > 10:
    if num < 20:
        print("Number is between 10 and 20")

❗ Tips

• Python uses indentation (4 spaces) to define code blocks.
• Do not use curly braces like C/C++ or Java.
• Conditions must return True or False.