How do you use the python alpha_vantage API to return extended intraday data?

Seems like TIME_SERIES_INTRADAY_EXTENDED can return only CSV format, but the alpha_vantage wrapper applies JSON methods, which results in the error.

My workaround:

from alpha_vantage.timeseries import TimeSeries
import pandas as pd

apiKey = 'MY API KEY'

ts = TimeSeries(key = apiKey, output_format = 'csv')

#download the csv
totalData = ts.get_intraday_extended(symbol = 'NIO', interval = '15min', slice = 'year1month1')

#csv --> dataframe
df = pd.DataFrame(list(totalData[0]))

#setup of column and index
header_row=0
df.columns = df.iloc[header_row]
df = df.drop(header_row)
df.set_index('time', inplace=True)

#show output
print(df)

This is an easy way to do it.

ticker = 'IBM'
date= 'year1month2'
apiKey = 'MY API KEY'

df = pd.read_csv('https://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY_EXTENDED&symbol='+ticker+'&interval=15min&slice='+date+'&apikey='+apiKey+'&datatype=csv&outputsize=full') 

#Show output
print(df)

import pandas as pd

symbol = 'AAPL'
interval = '15min'
slice = 'year1month1'
api_key = ''
adjusted = '&adjusted=true&'

csv_url = 'https://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY_EXTENDED&symbol='+symbol+'&interval='+interval+'&slice='+slice+adjusted+'&apikey='+api_key

data = pd.read_csv(csv_url)
print(data.head)