I have a column in this format:
Date/Time Opened
2014-09-01 00:17:00
2014-09-18 18:55:00
I have converted it to datetime using below function
df['Date/Time Opened'] = pd.to_datetime(df['Date/Time Opened'])
How can I convert it to 'mm/yyyy' format so that I can plot it in a graph by frequency/count?