OPen Interest Data not retrieved using Talib indicator

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1 
Since we dont have OI column, i couldn't retireieve 
option_df['avg_OI'] = talib.MA(option_df['open_interest'], timeperiod=20,matype=0)

i could able to see the data in ur video..

Need ur input on this ..
thanks.

2

Make sure you are entering correct key for open interest.

print(option_chain[‘data’][0].keys()) # available keys