---
id: python-dictionaries-change
title: "Python Dictionaries Change"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["Change Items", "파이썬 딕셔너리 수정"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.88
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["python", "programming", "w3schools", "dictionaries", "update"]
raw_sources: ["https://www.w3schools.com/python/python_dictionaries_change.asp"]
applied_in: []
github_commit: ""
---

# [[Python Dictionaries Change]]

## 🎯 한 줄 통찰 (One-line insight)
A dictionary value can be changed either by direct key assignment or via update() with a dict argument — the latter accepts any iterable of key:value pairs, not just a literal dict. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Direct assignment** — `thisdict["year"] = 2018` changes an existing key's value. [S1]
- **`update()` method** — `thisdict.update({"year": 2020})` updates using another dict (or key:value iterable) as the argument. [S1]

## 📖 세부 내용 (Details)
- Direct change: `thisdict["year"] = 2018`. [S1]
- Update method: `thisdict.update({"year": 2020})`. [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — update()는 Add Dictionary Items 챕터에서 "키가 없으면 추가"라는 동작으로 확장된다. [S1]

## 💻 코드 패턴 (Code patterns)
Update a value via update() (Python):
```python
thisdict = {"brand": "Ford", "model": "Mustang", "year": 1964}
thisdict.update({"year": 2020})
```

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual
- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
- **신뢰 점수:** 0.88
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[Python Tutorial]]
- **관련 개념:** [[Python Dictionaries]], [[Python Dictionaries Add]]
- **참조 맥락:** 딕셔너리 값 수정의 기본 — update()는 Add Dictionary Items에서 신규 키 추가로 확장.

## 📚 출처 (Sources)
- [S1] W3Schools — Python - Change Dictionary Items — https://www.w3schools.com/python/python_dictionaries_change.asp

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