# use testing series collected by The Covid Tracking Project# https://covidtracking.com/api/url=f"https://covidtracking.com/api/us/daily.csv"url
'https://covidtracking.com/api/us/daily.csv'
# fetch US data from Covid Tracking Project# keep only a few columnsdf=pd.read_csv(url,parse_dates=['date','dateChecked'])[['date','positive','death','total']]
# use date as x-axis for displays so make it the indexdf.set_index('date',inplace=True)df.set_index(df.index.strftime('%m/%d'),inplace=True)df.sort_index(inplace=True)