Comparisons and elif

Last lesson you saw >= and ==. Now let’s meet the whole set.

Comparison operators

Symbol	Meaning	Example	Result
`==`	equal to	`5 == 5`	`True`
`!=`	not equal	`5 != 3`	`True`
`>`	greater than	`5 > 7`	`False`
`<`	less than	`5 < 7`	`True`
`>=`	greater than or equal	`5 >= 5`	`True`
`<=`	less than or equal	`5 <= 4`	`False`

True and False are Python’s “yes” and “no”. Put a comparison inside print and you’ll see the answer directly:

Inputs (for input())

One value per line — read in order by input().

Output

elif — “no, but what about this?”

When two paths aren’t enough, elif (else if) comes to the rescue. Python checks the conditions top to bottom and stops at the first true one:

Inputs (for input())

One value per line — read in order by input().

Output

Change score and try to hit all four answers. Try 95, 60, 30!

Missions

Mission

True or false?

+10 XP

Write three comparisons and print their results — at least one True and one False.

Inputs (for input())

One value per line — read in order by input().

Output

Mission

Weather advisor

+15 XP

Give advice based on the temperature: 30°+ hot, 15–29° mild, below 15° cold. (The input is 22.)

Inputs (for input())

One value per line — read in order by input().

Output

Mission

Odd or even?

+15 XP

Our old friend % is back: if the number is even print even, if it’s odd print odd. (The input is 7.)

Inputs (for input())

One value per line — read in order by input().

Output

Next lesson: we learn to combine several conditions — and, or, not. Continue →