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10_Wiki/Dev/Topic_Python/Python_Operators_Precedence.md

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+---
+id: python-operators-precedence
+title: "Python Operators Precedence"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["Operator Precedence", "파이썬 연산자 우선순위"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["python", "programming", "w3schools", "operators", "precedence"]
+raw_sources: ["https://www.w3schools.com/python/python_operators_precedence.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Python Operators Precedence]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+Python evaluates parentheses first, then a fixed hierarchy from exponentiation down through logical OR, and falls back to left-to-right evaluation whenever two operators share the same precedence tier. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Operator precedence** — the order in which operations are performed. [S1]
+- **Parentheses highest** — expressions inside `()` are always evaluated first. [S1]
+- **Same-precedence tie-break** — left-to-right evaluation when precedence is equal. [S1]
+- **Precedence order (highest → lowest)** — `()` → `**` → unary `+x -x ~x` → `* / // %` → `+ -` → `<< >>` → `&` → `^` → `|` → comparisons/identity/membership (`== != > >= < <= is is not in not in`) → `not` → `and` → `or`. [S1]
+
+## 📖 세부 내용 (Details)
+- Parentheses first: `print((6 + 3) - (6 + 3))`. [S1]
+- Multiplication before addition: `print(100 + 5 * 3)  # 115, not 315`. [S1]
+- Left-to-right on equal precedence: `print(5 + 4 - 7 + 3)` evaluates strictly left to right. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 복합 표현식의 평가 순서를 예측해야 할 때 항상 참조하는 표다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Multiplication evaluated before addition (Python):
+```python
+print(100 + 5 * 3)  # 115
+```
+
+## ✅ 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 Operators Arithmetic]], [[Python Operators Bitwise]], [[Python Operators Logical]]
+- **참조 맥락:** 모든 연산자를 종합한 우선순위 표 — 복합 표현식의 평가 순서 확인용.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Python Operator Precedence — https://www.w3schools.com/python/python_operators_precedence.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Python Operator Precedence" page (Astra wiki-curation, P-Reinforce v3.1 format).