/Python/Datafram combine 3 columns to datetime

Datafram combine 3 columns to datetime

from datetime import datetime
df['date']= df.apply(lambda x:datetime.strptime("{0} {1} {2}".format(x['year'],x['month'], x['day']), "%Y %m %d"),axis=1)
df.index= df['date']

Source: stackoverflow.com

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