df = pd.read_csv('btc.csv')
df = df.sort_values(by='Date')
df = df.drop(len(df)-1, axis=0)
df = df.drop(len(df)-1, axis=0)
df = pd.read_csv('btc.csv')
df = df.sort_values(by='Date')
df = df.drop(len(df)-1, axis=0)
df = df.drop(len(df)-1, axis=0)