---
id: python-dates
title: "Python Dates"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["datetime module", "strftime", "파이썬 날짜"]
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", "datetime", "dates"]
raw_sources: ["https://www.w3schools.com/python/python_datetime.asp"]
applied_in: []
github_commit: ""
---

# [[Python Dates]]

## 🎯 한 줄 통찰 (One-line insight)
Python has no native date type — dates are objects from the `datetime` module, constructed with year/month/day (time/timezone optional, defaulting to 0/None), and rendered into any custom string format via `strftime()`'s directive codes. [S1]

## 🧠 핵심 개념 (Core concepts)
- **No native date type** — must `import datetime` to work with dates as objects. [S1]
- **`datetime.datetime.now()`** — returns the current date/time (year, month, day, hour, minute, second, microsecond). [S1]
- **`datetime.datetime(year, month, day, ...)`** — constructs a specific date; time/timezone parameters are optional. [S1]
- **`.strftime(format)`** — formats a datetime object into a custom string using directive codes. [S1]
- **Common directives** — `%A`/`%a` weekday full/short, `%B`/`%b` month full/short, `%Y`/`%y` year full/short, `%H`/`%I` hour 24/12, `%M` minute, `%S` second, `%p` AM/PM, `%j` day-of-year, `%U`/`%W` week number. [S1]

## 📖 세부 내용 (Details)
- Current date: `import datetime; x = datetime.datetime.now(); print(x)`. [S1]
- Date attributes: `print(x.year); print(x.strftime("%A"))`. [S1]
- Construct a specific date: `x = datetime.datetime(2020, 5, 17)`. [S1]
- Format with strftime: `x = datetime.datetime(2018, 6, 1); print(x.strftime("%B"))` → "June". [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — SQL Dates 챕터에서 다룬 날짜 포맷 불일치 문제와 유사하게, Python에서도 strftime 포맷 코드를 정확히 알아야 원하는 문자열을 얻을 수 있다. [S1]

## 💻 코드 패턴 (Code patterns)
Construct and format a specific date (Python):
```python
import datetime
x = datetime.datetime(2018, 6, 1)
print(x.strftime("%B"))  # June
```

## ✅ 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 Modules]], [[SQL Dates]]
- **참조 맥락:** 날짜/시간 데이터를 다뤄야 하는 모든 로직의 기초 — SQL Dates의 포맷 불일치 문제와 유사한 주의가 필요하다.

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

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