Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Introduction to NumPy Meet NumPy Introducing Arrays

Madhu Kosuri
Madhu Kosuri
215 Points
Posted by Madhu Kosuri
Madhu Kosuri
215 Points

A NumPy array is similar to a Python list

A NumPy array is similar to a Python list

1 Answer

Pierre Guiglion
Pierre Guiglion
11,583 Points
Pierre Guiglion
Pierre Guiglion
11,583 Points

Arrays are more restricted than lists, but those restrictions make them much more efficient to work with in terms of memory and speed. Two key differences are that:

  • their length can't be changed
  • all the values they hold must have the same type (can't have and array with both int and str)