I've the following code:
ticker = ["IYR","IYZ","XLB","XLE","XLI","XLK","XLP","XLU","XLY","IYF"] #downloading data and creating DFs for ei in ticker: vars()[ei] = yf.download(ei, start="2015-01-01", end="2020-10-21",auto_adjust=True) #Iterate over DFs in order to rename columns for ei in ticker: vars()[ei].rename(columns={"Open":str(ei)+"_O", "High": str(ei)+"_H", "Low": str(ei)+"_L", "Close": str(ei)+"_C"}) But i don't know why, it does not rename. Any helps ? Thank you !!
inplace=Trueparameter?vars()withvars.