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77 lines
3.3 KiB
Markdown
77 lines
3.3 KiB
Markdown
---
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id: python-tuples
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title: "Python Tuples"
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category: "Programming_Language"
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status: "draft"
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verification_status: "conceptual"
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canonical_id: ""
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aliases: ["파이썬 튜플"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.9
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created_at: 2026-07-04
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updated_at: 2026-07-04
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review_reason: ""
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merge_history: []
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tags: ["python", "programming", "w3schools", "tuples"]
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raw_sources: ["https://www.w3schools.com/python/python_tuples.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[Python Tuples]]
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## 🎯 한 줄 통찰 (One-line insight)
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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]
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## 🧠 핵심 개념 (Core concepts)
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- **Tuple** — one of Python's 4 built-in collection types; ordered and unchangeable, written with `()`. [S1]
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- **Ordered** — item order is fixed and persists. [S1]
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- **Unchangeable (immutable)** — cannot change, add, or remove items after creation. [S1]
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- **Allows duplicates** — indexed, so identical values can repeat. [S1]
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- **Single-item tuple gotcha** — `("apple",)` is a tuple; `("apple")` (no comma) is just a string in parentheses. [S1]
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- **`tuple()` constructor** — alternative creation syntax. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **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]
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## 📖 세부 내용 (Details)
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- Basic creation: `thistuple = ("apple", "banana", "cherry")`. [S1]
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- Duplicates allowed: `thistuple = ("apple", "banana", "cherry", "apple", "cherry")`. [S1]
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- Single-item tuple: `thistuple = ("apple",) # tuple` vs `thistuple = ("apple") # NOT a tuple`. [S1]
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- Constructor: `thistuple = tuple(("apple", "banana", "cherry"))`. [S1]
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## ⚖️ 모순 및 업데이트 (Contradictions & updates)
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소스에서 모순되는 정보는 발견되지 않음.
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## 🛠️ 적용 사례 (Applied in summary)
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현재 발견된 실제 적용 사례가 없습니다 — List와 대비되는 불변 컬렉션으로서 이후 Access/Update/Unpack/Loop/Join/Methods 챕터의 기초가 된다. [S1]
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## 💻 코드 패턴 (Code patterns)
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Single-item tuple gotcha (Python):
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```python
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thistuple = ("apple",) # a tuple
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print(type(thistuple)) # <class 'tuple'>
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thistuple = ("apple") # NOT a tuple
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print(type(thistuple)) # <class 'str'>
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```
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## ✅ 검증 상태 및 신뢰도
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- **상태:** draft
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- **검증 단계:** conceptual
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- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
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- **신뢰 점수:** 0.90
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- **중복 검사 결과:** 신규 생성 (New discovery)
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## 🔗 지식 그래프 (Knowledge Graph)
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- **상위/루트:** [[Python Tutorial]]
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- **관련 개념:** [[Python Lists]], [[Python Tuples Update]], [[Python Tuples Unpack]]
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- **참조 맥락:** List의 불변 버전 — Set/Dictionary와 함께 4대 컬렉션 타입 중 하나.
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## 📚 출처 (Sources)
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- [S1] W3Schools — Python Tuples — https://www.w3schools.com/python/python_tuples.asp
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## 📝 변경 이력 (Change history)
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- 2026-07-04: Initial draft synthesized from the W3Schools "Python Tuples" page (Astra wiki-curation, P-Reinforce v3.1 format).
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