application_vnd.jupyter.stderr_output_1.png
import pandas as pd                               # Data processing, CSV file I/O (e.g. pd.read_csv)

krenth311 = pd.read_csv('../input/dataset/krenth311.csv')
krenth316 = pd.read_csv('../input/dataset/krenth316.csv')
merge = pd.concat([krenth311, krenth316])
merge.to_csv('merge.csv', index=False)

for i in heartrate:
    i += i
heartrate = sum(heartx)
krenth311['heartrate'] = krenth311[sum(heartrate) / len(heartrate)]
krenth311['aloneorinagroup'] = krenth311['aloneorinagroup'].replace({9: 'Alone', 10: 'Online', 11: 'Group'})