time_string = "19/01/20 16:31:32.123"
format_string = "%d/%m/%y %H:%M:%S.%f"
date_object = datetime.strptime(time_string, format_string)
print(date_object)
time_string = "19/01/20 16:31:32.123"
format_string = "%d/%m/%y %H:%M:%S.%f"
date_object = datetime.strptime(time_string, format_string)
print(date_object)
OUTPUT
2020-01-19 16:31:32.123000