Subtracting Dates To Get Days In Pandas

I have 2 columns date_1 (dtype('O')) and date_2(dtype(') date_1 date_2 2018-06-06 2018-04-01 when i do subtraction to get days df['date_1'] - df['date_2'] i ge

Solution 1:

Need convert columns to datetimes:

df['date_1'] = pd.to_datetime(df['date_1'])
df['date_2'] = pd.to_datetime(df['date_2'])

Or:

df = df.apply(pd.to_datetime)

And then:

df['days'] = (df['date_1'] - df['date_2']).dt.days