How do I find first and last value of each day in pandas dataframe

I have a pandas DataFrame like the below:

I want to find first and last value of each day based on Date column. The result can be like the below for the first day:

I try to use this Q/A solution but it does not work.
How do I find First and Last Value of each day (group by date)?

>Solution :

You could convert "Date" column values to dates (without hours); then groupby it and use first and last to get the desired outcome:

out = df.groupby(pd.to_datetime(df['Date']).dt.strftime('%m/%d/%Y'))['Price'].agg(['first', 'last']).reset_index()

Output:

         Date     first       last
0  02/05/2017  25149.57  14570.001
1  02/06/2017  14600.00  14600.000