2nd/10_Wiki/Dev/Topic_Python/Python_Tuples.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
python-tuples	Python Tuples	Programming_Language	draft	conceptual		파이썬 튜플		B	0.9	2026-07-04	2026-07-04			python programming w3schools tuples	https://www.w3schools.com/python/python_tuples.asp

Python Tuples

🎯 한 줄 통찰 (One-line insight)

A tuple is an ordered, immutable, duplicate-allowing collection written with round brackets — and a single-item tuple requires a trailing comma, or Python won't recognize it as a tuple at all. [S1]

🧠 핵심 개념 (Core concepts)

• Tuple — one of Python's 4 built-in collection types; ordered and unchangeable, written with (). [S1]
• Ordered — item order is fixed and persists. [S1]
• Unchangeable (immutable) — cannot change, add, or remove items after creation. [S1]
• Allows duplicates — indexed, so identical values can repeat. [S1]
• Single-item tuple gotcha — ("apple",) is a tuple; ("apple") (no comma) is just a string in parentheses. [S1]
• tuple() constructor — alternative creation syntax. [S1]

🧩 추출된 패턴 (Extracted patterns)

• Trailing-comma requirement — the single most common tuple mistake is omitting the comma for a one-item tuple, silently producing a non-tuple instead of raising an error. [S1]

📖 세부 내용 (Details)

• Basic creation: thistuple = ("apple", "banana", "cherry"). [S1]
• Duplicates allowed: thistuple = ("apple", "banana", "cherry", "apple", "cherry"). [S1]
• Single-item tuple: thistuple = ("apple",) # tuple vs thistuple = ("apple") # NOT a tuple. [S1]
• Constructor: thistuple = tuple(("apple", "banana", "cherry")). [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — List와 대비되는 불변 컬렉션으로서 이후 Access/Update/Unpack/Loop/Join/Methods 챕터의 기초가 된다. [S1]

💻 코드 패턴 (Code patterns)

Single-item tuple gotcha (Python):

thistuple = ("apple",)   # a tuple
print(type(thistuple))   # <class 'tuple'>

thistuple = ("apple")    # NOT a tuple
print(type(thistuple))   # <class 'str'>

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.90
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: Python Tutorial
• 관련 개념: Python Lists, Python Tuples Update, Python Tuples Unpack
• 참조 맥락: List의 불변 버전 — Set/Dictionary와 함께 4대 컬렉션 타입 중 하나.

📚 출처 (Sources)

• [S1] W3Schools — Python Tuples — https://www.w3schools.com/python/python_tuples.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "Python Tuples" page (Astra wiki-curation, P-Reinforce v3.1 format).