파이썬 (8) 썸네일형 리스트형 Transform a Counter object into a Pandas DataFrame https://stackoverflow.com/questions/31111032/transform-a-counter-object-into-a-pandas-dataframe Overwrite previous output (python, print) https://stackoverflow.com/questions/38540395/overwrite-previous-output-in-jupyter-notebook beautiful soup copy selector https://wikidocs.net/85739 beautiful soup user agent from bs4 import BeautifulSoup import requests import urllib.request import urllib.parse url = "크롤링할 사이트 주소" headers = {'User-Agent':'아래 링크에서 얻은 user agent 복붙'} # http://www.useragentstring.com/ r = requests.get(url, headers = headers) soup = BeautifulSoup(r.text, 'html.parser') pandas / 열 데이터 누적 df2.cumsum() https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.cumsum.html 기존 데이터의 조건으로 열 생성하기 def f(row): if row['side'] == 0: val = row['quantity']*(-1) elif row['side'] == 1: val = row['quantity'] return val df2['ac'] = df2.apply(f, axis=1) https://stackoverflow.com/questions/21702342/creating-a-new-column-based-on-if-elif-else-condition 기존 데이터로 열 생성하기 df['amount'] = df['price'] * df['quantity'] https://nalara12200.tistory.com/162 pandas / csv 불러오기 import pandas as pd df = pd.read_csv('/content/drive/MyDrive/Colab Notebooks/2018-06-01-orderbook.csv') https://rfriend.tistory.com/250 이전 1 다음
