Python's len() Function

Focused View

Christopher Trudeau

24:49

130 View

512 01 intro.mp4

01:45

512 02 len.mp4

07:21

512 03 usage.mp4

05:09

512 04 third.mp4

05:32

512 05 dunder.mp4

04:18

512 06 sum.mp4

00:44

len.pdf

len sample code.zip

Description

In many situations, you’ll need to find the number of items stored in a data structure. Python’s built-in function len() is the tool that will help you with this task.

There are some cases in which the use of len() is straightforward. However, there are other times when you’ll need to understand how this function works in more detail and how to apply it to different data types.

What You'll Learn?

Find the length of built-in data types using len()
Use len() with third-party data types
Provide support for len() with user-defined classes

More details

User Reviews

Rating

average 0

Total votes0

Focused display

Python

Christopher Trudeau

Instructor's Courses

Christopher has a passion for the Python language and writes for Real Python. He is a consultant who helps advise organizations on how to improve their technical teams. Christopher is a strong advocate for automation throughout the delivery process and the power of small teams with well defined goals.

You can find Christopher here: