---
id: python-syntax
title: "Python Syntax"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["Python Indentation", "파이썬 문법"]
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", "syntax", "indentation"]
raw_sources: ["https://www.w3schools.com/python/python_syntax.asp"]
applied_in: []
github_commit: ""
---

# [[Python Syntax]]

## 🎯 한 줄 통찰 (One-line insight)
Indentation in Python is not cosmetic — it's the mechanism that defines a code block, and inconsistent spacing within the same block is a syntax error, not just a style nit. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Two execution modes** — directly in the command line (`>>> print(...)`), or as a `.py` file run via `python myfile.py`. [S1]
- **Indentation defines blocks** — unlike languages where indentation is only for readability, Python requires it to indicate a block of code. [S1]
- **Consistent spacing required** — the same block must use the same number of spaces; inconsistent spacing raises an error. [S1]
- **Variables need no declaration** — `x = 5` both declares and assigns in one step (detailed in [[Python Variables]]). [S1]
- **Comments start with `#`**. [S1]

## 🧩 추출된 패턴 (Extracted patterns)
- **Space count is a convention, not a rule** — any number of spaces ≥1 is legal, but it must be applied consistently within the same block; four spaces is the most common convention. [S1]

## 📖 세부 내용 (Details)
- Correct indentation: [S1]
```python
if 5 > 2:
    print("Five is greater than two!")
```
- Missing indentation raises a syntax error. [S1]
- Inconsistent indentation within one block also raises an error. [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 들여쓰기 규칙은 이후 함수/클래스/반복문 등 모든 블록 구조 챕터에서 전제되는 기초 문법이다. [S1]

## 💻 코드 패턴 (Code patterns)
Indentation defines a block (Python):
```python
if 5 > 2:
    print("Five is greater than two!")
```

## ✅ 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 Intro]], [[Python Variables]], [[Python Comments]]
- **참조 맥락:** 블록 구조를 다루는 모든 챕터(조건문/반복문/함수/클래스)의 전제 문법.

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

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