daejinseok

# https://school.programmers.co.kr/learn/courses/30/lessons/118668#qna

import math


def solution(alp, cop, problems):

    # 필요 능력 구하기
    alp_max = 0
    cop_max = 0

daejinseok

//https://gist.github.com/andrew8088/6f53af9579266d5c62c8


function stringify2(obj){
	var result = [];
	var k

	for(k in obj){
		if(typeof obj[k] === 'object'){
			result.push('"' + k + '":' + stringify2(obj[k]));

daejinseok

import datetime

datetime.datetime.today()
# datetime.datetime(2021, 7, 20, 17, 48, 37, 529267)

datetime.datetime(2021, 9, 3) - datetime.timedelta(days=30)
# datetime.datetime(2021, 8, 4, 0, 0)

datetime.datetime.today() - datetime.datetime(2021, 9, 3)
# datetime.timedelta(days=-45, seconds=64206, microseconds=234744)

daejinseok

# encode from binary file to base64txt
$outpath = (Join-Path (pwd) 'out_base64.txt'); 
$inpath = (Join-Path (pwd) 'data.jpg'); 
[IO.File]::WriteAllText($outpath, ([convert]::ToBase64String(([IO.File]::ReadAllBytes($inpath)))))

# decode from base64txt to binary file
$outpath = (Join-Path (pwd) 'outdata2.jpg'); 
$inpath = (Join-Path (pwd) 'out_base64.txt'); 
[IO.File]::WriteAllBytes($outpath, ([convert]::FromBase64String(([IO.File]::ReadAllText($inpath)))))

daejinseok

import os
import glob

for l in glob.glob('*.webm'):
	fname, ext = os.path.splitext(l.strip())
	cli = f'ffmpeg -i "{l}" "{fname}.mp4"'
	os.system(cli)

daejinseok

function makeHashCount( arr ){
    const m = new Map();

    arr.forEach( k => {
        m.set(k, (m.get(k)||0) + 1 );
    })

    return m;
}

daejinseok

a = "daejin      dae   aaa"

import re
re.split(' +', a)
['daejin', 'dae', 'aaa']

b = "daejin aaa # daejidna;kdj"
re.sub('#.*$', '', b)
'daejin aaa '

daejinseok

import glob
import os

l = glob.glob('*.jpg')

for nm in l :
    print(nm[:26], '{:04d}'.format(int(nm[26:-4])), '.jpg')
    os.rename(nm, nm[:26]+'{:04d}'.format(int(nm[26:-4]))+'.jpg')

daejinseok

# pip install youtube-dl
# 해서 youtube-dl 설치하시고

#import subprocess

#def dn(i):
#    u = r'https://www.youtube.com/watch?v=UOunv9V14cA&list=PLZPhyNeJvHRmnMr5yucZ9Eu-yVhjRRsOM&index='
#    subprocess.call('youtube-dl ' + u+str(i))

#[ dn(x) for x in range(1,73)]

daejinseok

일단 인터넷이 되는 곳

mkdir openpyxl & cd openpyxl
pip download openpyxl

해당 폴더에 아래와 같은 압축파일 몇개가 생긴다.

et_xmlfile-1.0.1.tar.gz
jdcal-1.4-py2.py3-none-any.whl