Return Number of Week of datetime Object in Python (Example Code)

In this tutorial, you’ll learn how to get the week number of a datetime object in Python programming.

Example Data

First, we have to load the datetime module, as you can see below:

import datetime                                     # Import datetime

Example: Return the Week Number of datetime

Next, we create a new datetime object as a basis for the example.

date_x = datetime.datetime(2020, 9, 12, 7, 35, 18)  # Example date
print(date_x)                                       # Print date
# 2020-09-12 07:35:18

Since the isocalendar function works with a tuple containing year, week number, and day of week, we structure our datetime object the same way and can afterwards define the index position we want to be returned:

yr, wn, wd = date_x.isocalendar()                   # Using isocalendar function
print(wn)                                           # Printing number of week
# 37

In our case, we want to know the week number, so we simply print ‘wn’.

Further Resources

You may find some related Python programming tutorials on topics such as data objects, numeric values, and groups below:

• Get N Hours, Minutes & Seconds Earlier as datetime Object in Python
• Get Number of Cases by Group in pandas DataFrame in Python
• All Python Programming Tutorials

Note: This article was created in collaboration with Matthias Bäuerlen. Matthias is a programmer who helps to create tutorials on the Python programming language. You might find more info about Matthias and his other articles on his profile page.