Code reviewHardcr-p039

Subject SecurityLevel Senior~18 minCommon in Security interviewsIndustries Software development

Question

Review this input validation.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.

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Code to reviewpython

1import re2def valid(s):3    return re.match(r'^(a+)+$', s) is not None

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