PY

• Eugène Py, a French cinema pioneer of the Cinema of Argentina • Jorge Py, a Brazilian footballer • Olivier Py, a French stage director, actor and writer • Delphine Py-Bilot, a French triathlete • Piye, a Kushite king and founder of the Twenty-fifth dynasty of Egypt • Pierre-Yves Gerbeau, French businessman ==Science and technology==

• Python (programming language), which uses the filename extension '.py' • .py, the country code top level domain (ccTLD) for Paraguay • py (unit), a Korean unit of floorspace area • petayear, Py, 1015 year • Py (cipher), a stream cipher designed by Eli Biham and Jennifer Seberry • p-y method, for assessing the load-bearing abilities of deep foundations • Permalloy, a nickel-iron magnetic alloy • Pyridine, a common monodentate ligand in coordination chemistry, abbreviated as 'py' ==Other uses==

• Py, Pyrénées-Orientales, a commune of the Pyrénées-Orientales département in southwestern France • Pack year, a measure of cigarette smoking • Paraguay, ISO 3166-1 country code • Puducherry, formerly Pondicherry, a union territory of India • Pinyin, a system of romanization (phonetic notation and transliteration to Roman script) for Mandarin Chinese • Portsmouth yardstick, used as a rating system in yacht racing and dinghy racing • Surinam Airways (IATA airline designator PY) • A US Navy hull classification symbol: Patrol yacht (PY) • Southwest Papua (vehicle registration prefix PY)