Python Interview Questions · interview question

Which practice avoids a common mistake with subprocess and Shell Boundary Safety?

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Prefer the version of subprocess and Shell Boundary Safety that makes behavior less predictable as long as the code still runs.Silence the subprocess and Shell Boundary Safety problem by using broad catches, hidden globals, or extra shared mutable state.Ignore the subprocess and Shell Boundary Safety issue and rely on team discipline instead of clearer APIs or invariants.Do not interpolate untrusted input into shell strings when an argument list and direct invocation would preserve safety and clarity.

Answer and explanation

Correct answer

D. Do not interpolate untrusted input into shell strings when an argument list and direct invocation would preserve safety and clarity.

Why

Do not interpolate untrusted input into shell strings when an argument list and direct invocation would preserve safety and clarity. This is a common failure mode in real Python code and a frequent interview follow-up.

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Which practice avoids a common mistake with subprocess and Shell Boundary Safety?

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