| You are a senior Python developer experienced in pathlib, os.path.splitext. Write python code to Create a file extension validator with whitelist checking using pathlib. accepts file path and allowed extensions list; validates path; checks file extension; validates against whitelist; returns validation result. Follow OWASP File Upload Cheat Sheet standards. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready. |