Open a dynamic file set
Open every path for reading and return all contents while guaranteeing every handle closes.
What you’ll practice
This Level 6 exercise focuses on ExitStack in the Professional curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.
Relevant Python reference: contextlib — Context management.
Sample Test Cases
read_all(['package.json'])[contents_a, contents_b]Further Reading
Reference Solution
Reveal Reference Solution
def read_all(paths: list[str]) -> list[str]: from contextlib import ExitStack with ExitStack() as stack: files = [stack.enter_context(open(path, encoding='utf-8')) for path in paths] return [file.read() for file in files]Pro Tips & Keyboard Shortcuts
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