December 2017
Beginner
624 pages
15h 38m
Korean
Content preview from Head First Python, 개정판 : 스스로 질문하며 답을 찾는 파이썬 학습서(Python 3)
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226 Chapter 4
사라의 의견 확인
레퍼런스로 전달 기법 시연
톰의 명백한 한 방에도 기죽지 않고 사라는 자리에 앉아 자신의 생각이 옳다는 것을 증명할
준비를 합니다. 다시
IDLE
편집 창이 등장합니다. 이번엔 사라가
change
함수를 실행할
겁니다.
‘
mystery.py
’
모듈입니다.
톰의 함수
사라의 함수
사라가
>>>
프롬프트에 몇 행의 코드를 입력하고는 자신의 의자에 기대앉아 팔짱을
끼고 톰에게 말합니다.
‘
파이썬이 값으로 전달 호출만 지원한다면 이 결과는 어떻게
설명할 수 있을까?
’
톰은 아무 대답도 못합니다.
사라가 쉘에 입력한 명령을 확인해보세요.
>>> numbers = [ 42, 256, 16 ]
>>> change(numbers)
Before: [42, 256, 16]
After: [42, 256, 16, 'More data']
>>> numbers
[42, 256, 16, 'More data']
사라는 톰이 사용했던
것과 똑같은 리스트
데이터를 이용해
자신의
‘
change
’
함수를 호출합니다.
무슨 일이 일어났는지 보세요!
이번에는 함수에서 인잣값을
바꿨더니 쉘의 값도 바뀌었습니다.
이 결과로만 보면 파이썬은
레퍼런스로 전달 호출 기법도
지원하는 것 같네요.
이상한 일이 일어났네요.
톰의 함수는 인자가 값으로 전달됨을, 사라의 함 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.