[Python] Python yfinance: Difference between two methods of getting historical data with...

Hello everyone and good night!

I'm collecting data in two different ways for a hobby application:

data = yf.Ticker(ticker).history(start=bonus_date, end=end_date)
data2 = (yf.download([ticker], start=bonus_date, end=end_date, actions=True))[['Open', 'High', 'Low', 'Close', 'Volume', 'Dividends', 'Stock Splits']]
data = data.reset_index()
data2 = data2.reset_index()

if isinstance(data2.columns, pd.MultiIndex):
data2.columns = data2.columns.droplevel(1)

print(data2.columns)
print(data.columns)

data.to_csv("output1.csv", index=False)
data2.to_csv("output2.csv", index=False)


The two csv outputs are equal, but when I use "data" variable in my final application, everything works fine. When I use data2 variable in my final application, I receive an error:

raise IndexError("single positional indexer is out-of-bounds") IndexError: single positional indexer is out-of-bounds 127.0.0.1 - - [14/Feb/2025 22:53:58] "POST / HTTP/1.1" 500 -
​

Looks like the "Date" columns is not beign recognized as Index of my dataframe, but I'm not sure what I can do to correct that. Could you please assist me on that?

Obs: I really want to use the "data2" information because I don't want to use adjusted values at the yfinance lib.

Thank you very much in advance!

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