---
id: python-operators-arithmetic
title: "Python Operators Arithmetic"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["Arithmetic Operators", "파이썬 산술 연산자"]
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", "arithmetic"]
raw_sources: ["https://www.w3schools.com/python/python_operators_arithmetic.asp"]
applied_in: []
github_commit: ""
---

# [[Python Operators Arithmetic]]

## 🎯 한 줄 통찰 (One-line insight)
Python has two distinct division operators — `/` always returns a float, while `//` (floor division) always returns an integer, rounding DOWN rather than to the nearest whole number. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Arithmetic operators** — `+` addition, `-` subtraction, `*` multiplication, `/` division, `%` modulus, `**` exponentiation, `//` floor division. [S1]
- **`/` vs `//`** — `/` returns a float; `//` returns an integer, rounded down (not to nearest). [S1]

## 📖 세부 내용 (Details)
- All operators demoed: `x = 15; y = 4; print(x + y); print(x - y); print(x * y); print(x / y); print(x % y); print(x ** y); print(x // y)`. [S1]
- Division always float: `x = 12; y = 5; print(x / y)  # 2.4`. [S1]
- Floor division rounds down: `print(x // y)  # 2`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
소스에서 모순되는 정보는 발견되지 않음.

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 이후 Operator Precedence 챕터에서 이 연산자들의 우선순위가 정의된다. [S1]

## 💻 코드 패턴 (Code patterns)
Division vs floor division (Python):
```python
x = 12
y = 5
print(x / y)   # 2.4  (float)
print(x // y)  # 2    (int, rounds down)
```

## ✅ 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]], [[Python Operators Precedence]], [[Python Numbers]]
- **참조 맥락:** 기본 산술 연산 — 나눗셈의 두 가지 방식(`/` vs `//`)을 반드시 구분해야 한다.

## 📚 출처 (Sources)
- [S1] W3Schools — Python Arithmetic Operators — https://www.w3schools.com/python/python_operators_arithmetic.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "Python Arithmetic Operators" page (Astra wiki-curation, P-Reinforce v3.1 format).