If, elif, else in Python

Branching: choosing a path based on conditions, top to bottom.

def grade(score):
    if score >= 90:
        return "A"
    elif score >= 80:
        return "B"
    elif score >= 70:
        return "C"
    else:
        return "F"


mark = grade(85)
verdict = "pass" if mark != "F" else "fail"

How it works

1. An if/elif ladder returns at the first true branch.
2. else catches everything that fell through.
3. The one-line conditional expression handles simple picks.

Keywords and builtins used here

• def
• elif
• else
• grade
• if
• return

The run, in numbers

Lines

13

Characters to type

182

Tokens

63

Three-star pace

85 tpm

At the three-star pace of 85 tokens a minute, this run takes about 44 seconds.

Type this snippet

Step 1 of 7 in Flow control, step 16 of 72 in Language basics.

← Previous Next →