2nd/10_Wiki/Dev/Topic_Python/Python_Dates.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
python-dates	Python Dates	Programming_Language	draft	conceptual		datetime module strftime 파이썬 날짜		B	0.9	2026-07-04	2026-07-04			python programming w3schools datetime dates	https://www.w3schools.com/python/python_datetime.asp

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):

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).