Level 4Exercise #79

Length-r arrangements

Return ordered selections of r distinct API scopes.

What you’ll practice

This Level 4 exercise focuses on permutations(r) in the Itertools curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: itertools.permutations.

Sample Test Cases

Example #1

Input:ordered_scopes(['read','write','admin'], r=2)

Output:6 ordered pairs

Reference Solution

Reveal Reference Solution

def ordered_scopes(scopes: list[str], r: int):
    from itertools import permutations
    return list(permutations(scopes, r))

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Length-r arrangements

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution