get the number of today week python

import datetime
my_date = datetime.date.today() # if date is 01/01/2018
year, week_num, day_of_week = my_date.isocalendar()
print("Week #" + str(week_num) + " of year " + str(year))

>>> import datetime
>>> datetime.datetime.now() + datetime.timedelta(days=7)