Level 2Exercise #34

Count passed checks

Count how many flags are true without an explicit loop counter.

What you’ll practice

This Level 2 exercise focuses on sum booleans in the Built-ins curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: Python Standard Library — Built-ins.

Sample Test Cases

Example #1

Input:passed_count([True,False,True,True])

Output:3

Reference Solution

Reveal Reference Solution

def passed_count(flags: list[bool]) -> int:
    return sum(flags)

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Count passed checks

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution