how i resamplae a datetime column in python

1>>> d = dict({'price': [10, 11, 9, 13, 14, 18, 17, 19],
2...           'volume': [50, 60, 40, 100, 50, 100, 40, 50]})
3>>> df = pd.DataFrame(d)
4>>> df['week_starting'] = pd.date_range('01/01/2018',
5...                                     periods=8,
6...                                     freq='W')
7>>> df
8   price  volume week_starting
90     10      50    2018-01-07
101     11      60    2018-01-14
112      9      40    2018-01-21
123     13     100    2018-01-28
134     14      50    2018-02-04
145     18     100    2018-02-11
156     17      40    2018-02-18
167     19      50    2018-02-25
17# try below code when you want resample on datetime column to other all columns in dataframe
18>>> df.resample('M', on='week_starting').mean() 
19               price  volume
20week_starting
212018-01-31     10.75    62.5
222018-02-28     17.00    60.0
23