Programming

Programming/Python
문자열 다루기
1. 선언 및 주석 #문자열을 선언할 때는 따옴표( ' ), 쌍따옴표( " )를 사용하며 둘을 함께 사용할 수 없음 >>> test1 = "eunhye" >>> print(test1) eunhye >>> test2 = 'eunhye' >>> print(test2) eunhye >>> test3 = "eunhye' File "", line 1 test3 = "eunhye' ^ SyntaxError: EOL while scanning string literal #특정 문자 출력을 위해서는 이스케이프 문자를 사용 >>> test = 'hi\ni\'m eunhye' >>> print(test) hi i'm eunhye 이스케이프 문자 출력 문자 \' 따옴표( ' ) \" 쌍따옴표( " ) \t 탭 (tab) \..
→2021.08.09
Programming/Python
selenium 통해서 web crawling 해서 slack 메세지 보내기
1. selenium, schedule, requests 설치 - selenium : 웹 브라우저를 실행하고 제어한다. 브라우저에 직접 접근하니 동적 웹 페이지도에 사용 가능하다. - reqeusts : 인터넷에서 파일과 웹 페이지를 다운로드 가능하다. - schedule : 특정 작업을 일정에 맞춰 실행할 수 있도록 설정 가능하다. - beautifulsoup : 웹 페이지를 작성하는 형식인 HTML을 구문 분석하며 정적 웹 페이지만 사용 가능하다. (제가 크롤링 할 웹 페이지는 동적 웹 페이지로 구성되어 있기 때문에 selenium을 사용해보겠습니다 🤔) pip3 install selenium pip3 install requests pip3 install schedule 2. 특정 URL의 HTML ..
→2021.06.22
Programming/Python
파일 경로 이동(copy, move)하고 삭제(rm)하고 압축(zip)하기
1. shutil 모듈 사용하기 - copy(), move() >>> import shutil, os >>> os.chdir('/Users/eunhye/Desktop/Workspace') #shutil.copy() : source를 destination에 복사 #shutil.copy(source, destination) >>> shutil.copy('A.txt', './Test') './Test/A.txt' #destination 이름은 유지되고 내용이 source 복사 >>> shutil.copy('B.txt', './Test/AA.txt') './Test/AA.txt' #shutil.copytree() : 디렉토리 통채로 복사 >>> shutil.copytree('.', '../Workspace_Ba..
→2021.06.22
Programming/Python
파일 열고(open) 읽고(read) 쓰기(wirte)
1. open() #open() : 파일 열기 >>> path = '/Users/eunhye/Desktop/Workspace/test.txt' >>> file = open(path) 2. read() #read() : 파일 읽기 #텍스트 형식으로 한줄에 보여줌 >>> fileContent = file.read() >>> fileContent 'test' #readlines() : 한줄식 파일 읽기 #리스트 형식으로 보여줌 >>> numberFile = open(path2) >>> numberContent = numberFile.read() >>> numberContent '1\n2\n3\n4\n5\n' >>> numberFile = open(path2) >>> numberFile.readlines() [..
→2021.06.17
Programming/Python
OS 모듈
1. OS 모듈 - 운영체제에 접근할 수 있게 해주는 모듈 >>> import os 2. OS 함수 #os.path.join : 경로 dir/파일을 넣을 경우 OS에 맞게 경로를 반환하는 함수 #Windows OS에서는 '\\' Linux OS에서는 '/'로 구분 >>> os.path.join('Users', 'eunhhye', 'Desktop') 'Users/eunhhye/Desktop' #os.getcwd : 현재 경로를 반환하는 함수 >>> os.getcwd() '/Users/eunhye' #os.chdir : 경로를 변경하기 위한 함수 >>> os.chdir('Desktop') >>> os.getcwd() '/Users/eunhye/Desktop' >>> os.makedirs('Workspace'..
→2021.06.16
Programming/Python
웹 크롤링(BeautifulSoup)
1. BeautifulSoup 설치 - 여기서 BeautifulSoup은 무엇인가? 예쁜 슾...? HTML 및 XML 파일에서 데이터를 가져 오기위한 Python 라이브러리입니다 어원은 '이상한 나라의 앨리스'에서 유래되었다고 하고 아름답게 정렬해준다는 정도의 의미?! Beautiful Soup Documentation — Beautiful Soup 4.9.0 documentation Non-pretty printing If you just want a string, with no fancy formatting, you can call str() on a BeautifulSoup object (unicode() in Python 2), or on a Tag within it: str(soup) # ' ..
→2021.05.06
Programming/코테
Codility - Lesson 4 - 2. MaxCounters
Task Description You are given N counters, initially set to 0, and you have two possible operations on them: increase(X) − counter X is increased by 1, max counter − all counters are set to the maximum value of any counter. A non-empty array A of M integers is given. This array represents consecutive operations: if A[K] = X, such that 1 ≤ X ≤ N, then operation K is increase(X), if A[K] = N + 1 t..
→2021.01.07
Programming/코테
Codility - Lesson 4 - 1. FrogRiverOne
Task Description A small frog wants to get to the other side of a river. The frog is initially located on one bank of the river (position 0) and wants to get to the opposite bank (position X+1). Leaves fall from a tree onto the surface of the river. You are given an array A consisting of N integers representing the falling leaves. A[K] represents the position where one leaf falls at time K, meas..
→2021.01.05
Programming/코테
Codility - Lesson 3 - 3. TapeEquilibrium
Task Description A non-empty array A consisting of N integers is given. Array A represents numbers on a tape. Any integer P, such that 0 < P < N, splits this tape into two non-empty parts: A[0], A[1], ..., A[P − 1] and A[P], A[P + 1], ..., A[N − 1]. The difference between the two parts is the value of: |(A[0] + A[1] + ... + A[P − 1]) − (A[P] + A[P + 1] + ... + A[N − 1])| In other words, it is th..
→2021.01.03
Programming/코테
Codility - Lesson 3 - 2. PermMissingElem
Code Description An array A consisting of N different integers is given. The array contains integers in the range [1..(N + 1)], which means that exactly one element is missing. Your goal is to find that missing element. Write a function: def solution(A) that, given an array A, returns the value of the missing element. For example, given array A such that: A[0] = 2 A[1] = 3 A[2] = 1 A[3] = 5 the ..
→2021.01.03
Programming/코테
Codility - Lesson 3 - 1. FrogJump
Task description A small frog wants to get to the other side of the road. The frog is currently located at position X and wants to get to a position greater than or equal to Y. The small frog always jumps a fixed distance, D. Count the minimal number of jumps that the small frog must perform to reach its target. Write a function: def solution(X, Y, D) that, given three integers X, Y and D, retur..
→2020.12.18
Programming/코테
Codility - Lesson 2 - 1. CyclicRotation
Task description An array A consisting of N integers is given. Rotation of the array means that each element is shifted right by one index, and the last element of the array is moved to the first place. For example, the rotation of array A = [3, 8, 9, 7, 6] is [6, 3, 8, 9, 7] (elements are shifted right by one index and 6 is moved to the first place). The goal is to rotate array A K times; that ..
→2020.12.09
Programming/코테
Codility - Lesson 1 - 1. BinaryGap
Task description A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of N. For example, number 9 has binary representation 1001 and contains a binary gap of length 2. The number 529 has binary representation 1000010001 and contains two binary gaps: one of length 4 and one of length 3. The numbe..
→2020.12.08

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