IMPORTANT: Please read before posting!

Discussion forum and mailing list about the graph-tool library.

Do you have a question about graph-tool? Then, just open a new topic below.

Don’t forget to check if your question has been asked before by using the search function above.

If you are reporting on a problem, don’t forget to include:

  1. Your exact graph-tool version.
  2. Your operating system.
  3. A minimal working example that shows the problem.

Item 3 above is very important! If you provide us only with a vague description, or only the part of the code that you believe causes the problem, then it is not possible to understand the context that may have contributed to it.

If you believe you have found a bug in the library, please open an issue in the gitlab repository instead opening a topic here: Don’t forget to give the exact same information as above.

To post code snippets, please use triple back-ticks for proper formatting:

for x in range(100):
    print("hello world")

Using as a mailing list:

This category also behaves like a mailing list. A new topic can also be created by sending an email to:

By default, you will receive email notifications to replies to your posts. You can also reply to those via email, and it your reply will show up in the forum.

If you want to also receive email notifications to every new topic in the category posted by any user, you should then watch it by clicking on the bell button.