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id: python-tuples-unpack
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title: "Python Tuples Unpack"
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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: ["Unpack Tuples", "Packing", "Asterisk unpacking", "파이썬 튜플 언패킹"]
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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", "unpacking"]
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raw_sources: ["https://www.w3schools.com/python/python_tuples_unpack.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[Python Tuples Unpack]]
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## 🎯 한 줄 통찰 (One-line insight)
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When variable count doesn't match tuple length, prefixing one variable with `*` collects all the "extra" values into a list — and that starred variable doesn't have to be last; it absorbs exactly as many items as needed to satisfy the other variables. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **Packing** — assigning multiple values to a tuple, e.g. `fruits = ("apple", "banana", "cherry")`. [S1]
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- **Unpacking** — extracting a tuple's values back into separate variables: `(green, yellow, red) = fruits`. [S1]
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- **Count must match** — the number of variables must equal the number of values, unless using `*`. [S1]
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- **Asterisk (`*`) collector** — when variables < values, one starred variable name collects the remainder AS A LIST. [S1]
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- **Asterisk in the middle** — if `*` is on a variable that isn't last, Python still fills the OTHER variables first/last as needed, giving the starred variable whatever remains. [S1]
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## 📖 세부 내용 (Details)
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- Basic unpack (counts match): `fruits = ("apple", "banana", "cherry"); (green, yellow, red) = fruits`. [S1]
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- Starred unpack, trailing collector: `fruits = ("apple","banana","cherry","strawberry","raspberry"); (green, yellow, *red) = fruits` → `red = ['cherry', 'strawberry', 'raspberry']`. [S1]
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- Starred unpack, middle collector: `fruits = ("apple","mango","papaya","pineapple","cherry"); (green, *tropic, red) = fruits` → `green='apple'`, `tropic=['mango','papaya','pineapple']`, `red='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 — Python Assign Multiple Values 챕터에서 이미 선행 소개된 언패킹 개념이 여기서 별표 문법으로 확장된다. [S1]
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## 💻 코드 패턴 (Code patterns)
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Starred unpacking in the middle position (Python):
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```python
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fruits = ("apple", "mango", "papaya", "pineapple", "cherry")
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(green, *tropic, red) = fruits
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print(green) # apple
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print(tropic) # ['mango', 'papaya', 'pineapple']
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print(red) # cherry
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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 Assign Multiple Values]], [[Python Args Kwargs]], [[Python Tuples]]
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- **참조 맥락:** 튜플/리스트 언패킹의 표준 문법 — 함수 가변 인자(`*args`)와 개념적으로 연결된다.
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## 📚 출처 (Sources)
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- [S1] W3Schools — Python - Unpack Tuples — https://www.w3schools.com/python/python_tuples_unpack.asp
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## 📝 변경 이력 (Change history)
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- 2026-07-04: Initial draft synthesized from the W3Schools "Python - Unpack Tuples" page (Astra wiki-curation, P-Reinforce v3.1 format).
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