May 2022
Beginner to intermediate
448 pages
13h 7m
Korean
book
밑바닥부터 시작하는 데이터 과학 데이터 분석을 위한 파이썬 프로그래밍과 수학·통계 기초
by Joel Grus, Hangyeol Kim, Seongju Ha, Eunjung Park
Content preview from 밑바닥부터 시작하는 데이터 과학 데이터 분석을 위한 파이썬 프로그래밍과 수학·통계 기초
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Data Science
26
튜플과 리스트는 다중 할당(
multiple
assignment
)을 지원한다.
x, y = 1, 2 # x
는
1, y
는
2
x, y = y, x #
가장
파이썬스럽게
변수를
교환
;
이제
x
는
2, y
는
1
2.11
딕셔너리
딕셔너리(
dict
,
dictionary
, 사전)는 파이썬의 또 다른 기본적인 데이터 구조이
며, 특정
값(
value
)과 연관된 키(
key
)를 연결해 주고 이를 사용해 값을 빠르게
검색할 수 있다.
empty
_
dict = {} #
가장
파이썬스럽게
딕셔너리를
만드는
방법
empty
_
dict2 = dict() #
덜
파이썬스럽게
딕셔너리를
만드는
방법
grades = {"Joel": 80, "Tim": 95} #
딕셔너리
예시
대괄호를 사용해서 키의 값을 불러올 수 있다.
joels
_
grade = grades["Joel"] #
결과는
80
만약 딕셔너리에 존재하지 않는 키를 입력하면
KeyError
가 발생한다.
try:
kates
_
grade = grades["Kate"]
except KeyError:
print("no grade for Kate!")
연산자
in
을 사용하면 키의 존재 여부를 확인할 수 있다.
joel
_
has
_
grade = "Joel" in grades # True (
참
)
kate
_
has
_
grade ...
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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.
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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.