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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 !!

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  • Do you get any errors? Did you try including inplace=True parameter? Commented Oct 27, 2020 at 16:03
  • Try replacing vars() with vars. Commented Oct 27, 2020 at 16:03

1 Answer 1

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Solved:

for ei in ticker:
  vars()[ei]=vars()[ei].rename(columns={"Open":str(ei)+"_O", "High": str(ei)+"_H", "Low": str(ei)+"_L", "Close": str(ei)+"_C"})
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