๐Ÿ”ขPython

[Python] python ์‹œ์ž‘

bananackck 2025. 2. 20. 23:28

[๋ธ”๋กœ๊ทธ ์ด์ „]

2022.08.23

 

๊ณ ๋”ฉ ์ดํ›„๋กœ ํŒŒ์ด์ฌ์„ ํ•ด๋ณธ์ ์ด ์—†์–ด์„œ ๊ฑฐ์˜ ๊นŒ๋จน์—ˆ๋‹ค...

๋…ธ๋งˆ๋“œ ์ฝ”๋”์— ์žˆ๋Š” ๊ฐ•์˜๋กœ ํŒŒ์ด์ฌ ๊ธฐ์ดˆ๋ถ€ํ„ฐ ๋‹ค์‹œ ์‹œ์ž‘

โ€‹

https://nomadcoders.co/python-for-beginners/lectures/104

 

All Courses – ๋…ธ๋งˆ๋“œ ์ฝ”๋” Nomad Coders

์ดˆ๊ธ‰๋ถ€ํ„ฐ ๊ณ ๊ธ‰๊นŒ์ง€! ๋‹ˆ๊ผฌ์Œค๊ณผ ํ•จ๊ป˜ ํ’€์Šคํƒ์œผ๋กœ ์„ฑ์žฅํ•˜์„ธ์š”!

nomadcoders.co

๐Ÿ€ํŒŒ์ด์ฌ์—์„œ ์ฐธ = True, ๊ฑฐ์ง“ = False --> ์•ž ๊ธ€์ž๊ฐ€ ๋Œ€๋ฌธ์ž์ด๋‹ค!

๐Ÿ€None ์ด๋ผ๋Š” ํƒ€์ž…๋„ ์žˆ๋‹ค. ์œ„์˜ boolean๊ณผ ๋Š” ๋‹ค๋ฅธ ํŒŒ์ด์ฌ์—๋งŒ ์žˆ๋Š” ํƒ€์ž…

--> ์•„๋ฌด๊ฒƒ๋„ ์—†์Œ. ๋น„์–ด์žˆ์Œ.

--> ํ‘œ๊ธฐ๋Š” None์œผ๋กœ ํ•˜๊ณ  ํƒ€์ž…๋ช…์„ ์ถœ๋ ฅํ•˜๋ฉด NoneType์ด๋‹ค.

๐Ÿ€ํŒŒ์ด์ฌ์—์„œ๋Š” ๊ธด ๋ณ€์ˆ˜๋ช…์„ '_' ๋กœ ์ด์–ด์ฃผ๋Š” ๊ฒƒ์ด ์•”๋ฌต์  ๋ฃฐ! -->snake case


์ž…์ถœ๋ ฅ

๐Ÿงต์ž…๋ ฅ

์ž…๋ ฅ์€ ํ•ญ์ƒ str ํƒ€์ž…์œผ๋กœ ๋ฐ›๋Š”๋‹ค.

k = input()

ํ•œ ์ค„์„ ํ†ต์ฑ„๋กœ ์ž…๋ ฅ๋ฐ›๋Š”๋‹ค.

โ€‹

๋”ฐ๋ผ์„œ ๋‹ค๋ฅธ ํƒ€์ž…์œผ๋กœ ์ž…๋ ฅ ๋ฐ›๊ณ  ์‹ถ์„ ๋•Œ๋Š” ํƒ€์ž…์„ ์ง€์ •ํ•ด์ฃผ์–ด์•ผ ํ•œ๋‹ค.

์ด๋•Œ ์ฃผ์˜ํ•  ์ ์€ ์•„๋ž˜์˜ i์— 2 3์„ ์ž…๋ ฅํ•˜๋ฉด ์ปดํŒŒ์ผ ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค. 2 3 ์€ ๋‘ ๊ฐœ์˜ ์ •์ˆ˜์ด์ง€๋งŒ i๋Š” ๋ณ€์ˆ˜๊ฐ€ ํ•˜๋‚˜์ด๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ์ด์™€ ๊ฐ™์€ ๊ฒฝ์šฐ๋ฅผ ์ž…๋ ฅ๋ฐ›์œผ๋ ค๋ฉด input()์„ ๋‘ ๋ฒˆ ํ•ด์ฃผ๊ฑฐ๋‚˜ ์•„๋ž˜์˜ ๊ธ€์„ ์ฐธ๊ณ ํ•˜์ž

i = int(input())
f = float(input())
b = bool(input())

๐Ÿงต์—ฌ๋Ÿฌ๊ฐ€์ง€ ๊ฐ’ ํ•œ ๋ฒˆ์— ์ž…๋ ฅ ๋ฐ›๊ธฐ (split, map)

โ€‹split์€ ๊ณต๋ฐฑ์„ ๊ธฐ์ค€์œผ๋กœ ๋ถ„๋ฆฌํ•˜์—ฌ ๋ฆฌ์ŠคํŠธ ํ˜•์‹์œผ๋กœ ์ €์žฅํ•œ๋‹ค. ์ด๋•Œ ๋ฆฌ์ŠคํŠธ์˜ ์›์†Œ๋Š” str ํƒ€์ž…์ด๋‹ค.

map์€ map(์›ํ•˜๋Š” ํƒ€์ž…, ๋ฐ˜๋ณต๊ฐ€๋Šฅ ๊ฐ์ฒด) ์˜ ์ธ์ˆ˜๋ฅผ ๋ฐ›๋Š”๋‹ค.

์ด๋•Œ map์€ ๋ฐ˜ํ™˜๊ฐ’์ด ๋ฆฌ์ŠคํŠธ๋‚˜ ํŠœํ”Œ์ด ์•„๋‹ˆ๋ผ ๊ฐ์ฒด์ด๋‹ค. ์ฆ‰, ๋ฆฌ์ŠคํŠธ๋‚˜ ํŠœํ”Œ๋กœ ๋‹ค์‹œ ๋ณ€ํ™˜ํ•ด์ฃผ์–ด์•ผ ํ•œ๋‹ค.

a = input()              //1 2 3 4 5
print(a)                 //"1 2 3 4 5"

a = input().split()              
print(a)                 //['1', '2', '3', '4', '5']

a = map(int, input().split())
print(a)                 //<map object at 0x01d56750>

a = list(map(int, input().split()))
print(a)                 //[1, 2, 3, 4, 5]

a = tuple(map(int, input().split()))
print(a)                 //(1, 2, 3, 4, 5)

a, b, c, d, e = map(int, input().split())
print(a)                 //1
print(b)                 //2

๐Ÿงต์ถœ๋ ฅ

๊ฐ ๊ฐ’ ์‚ฌ์ด์— ๊ณต๋ฐฑ์ด ์ž๋™์œผ๋กœ ์ถœ๋ ฅ ๋œ๋‹ค.

print(1, 2, 3)        //1 2 3

๊ฐ ๊ฐ’ ์‚ฌ์ด์— ๊ณต๋ฐฑ์ด ์•„๋‹Œ ๋‹ค๋ฅธ ๋ฌธ์ž๋ฅผ ๋„ฃ์„ ๊ฒฝ์šฐ sep ์‚ฌ์šฉํ•œ๋‹ค.

print(1, 2, 3, sep=',')       //1,2,3
print(1, 2, 3, sep=' and ')       //1 and 2 and 3

end ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์ค„๋ฐ”๊ฟˆ์„ ์ƒ๋žตํ•  ์ˆ˜ ์žˆ๋‹ค.

print(1, 2, 3, end=' ')
print(4, 5, 6)

//1 2 3 4 5 6

๐Ÿงต๋ฌธ์ž์—ด๊ณผ ๋ณ€์ˆ˜ ๊ฐ™์ด ์ถœ๋ ฅ

๋‘ ๊ฐ€์ง€ ๋ฐฉ๋ฒ•์ด ์žˆ๋‹ค. ๋จผ์ € ๋ฌธ์ž์—ด์„ ์ถœ๋ ฅํ•˜๊ณ  ๋ชจ๋“  ๋ณ€์ˆ˜๋ฅผ ๋ฌธ์ž์—ด๋กœ ๋ณ€ํ™˜ํ•˜์—ฌ ๊ฐ™์ด ์ถœ๋ ฅํ•ด์ฃผ์–ด์•ผ ํ•œ๋‹ค.

n = 10
print("์‚ฌ๊ณผ๊ฐ€ " + str(n) + "๊ฐœ ์žˆ๋‹ค.")

๋˜ ๋‹ค๋ฅธ ๋ฐฉ๋ฒ•์€ str์•ž์— f๋ฅผ ๋ถ™์ด๊ณ , ๋ณ€์ˆ˜๋Š” { }๋กœ ๋ง‰์•„์ฃผ๋ฉด ๋œ๋‹ค.

n = 10
print(f"์‚ฌ๊ณผ๊ฐ€ {n}๊ฐœ ์žˆ๋‹ค.")