Python if Statements.Everything You Need to Know Because They Control Your Code Flow.

Programming is all about making decisions. In Python, if statements let your code choose what to do based on conditions because without them, your programs would run the same way every time.

🤦‍♂️ What is an if statement?

An if statement tests a condition and runs a block of code only if that condition is True.

Since Python programs often need to respond differently depending on input or circumstances, if statements are essential.

Code.

#OutPut is You are an adult.

Because age >= 18 is True, Python prints the message.

If the condition were False, nothing would happen.

Image.

😮 if else statements

Sometimes you want your program to do something if a condition is true, and something else if it’s false. That’s why we use else in the code.

Code.

You are Young. Because the condition is False, Python executes the else block.

🤔 elif Because there can be multiple choices

When there are more than two possibilities, elif (short for “else if”) lets you test additional conditions.

Code.

OutPut Grade: B

Because score >= 90 is False but score >= 80 is True, Python runs the second block.

Nested if statements

You can place an if inside another if. This is useful because decisions can depend on multiple conditions.

Output:

Positive odd number.

Because the first condition is True (num >0) , Python checks the inner condition to decide if it’s even or odd.

Python if statements are the backbone of decision making in programming because they allow your code to respond differently based on conditions. By using if, elif, and else, you can handle multiple scenarios, create dynamic programs, and implement real world logic.

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