Conditional Statements (if, elif, else)

Sometimes your program needs to make decisions — just like you do.

• If your score is above 90, you get an A.
• If it’s above 80, you get a B.
• Otherwise, you try harder next time.

This is what conditional logic is all about.

Python uses the keywords if, elif, and else to control which lines of code get executed.

Let’s look at a simple example:

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score = 85

if score >= 90:
    print("Grade: A")
elif score >= 80:
    print("Grade: B")
else:
    print("Grade: C or below")

• Python checks the first condition: score >= 90. It’s false, so it skips that block.
• Then it checks the next: score >= 80. It’s true, so it prints "Grade: B".
• It does not check further once a match is found.
• If none match, the else block is executed.

• Conditions are evaluated top to bottom.
• Indentation (spacing) shows which lines belong to each block.
• You can use as many elif as needed, but only one if and one else.