weyl, symmetrize and antisymmetrize functions provide error

asked 2020-04-02 13:01:45 +0100

gvretina
11 ●1 ●2

updated 2024-08-11 10:18:30 +0100

5206 ●3 ●43 ●114

So I am running the Simon-Mars tensor and Kerr spacetime example ipynb without changing anything, and I found that the weyl, symmetrize and antisymmetrize functions are not able to run. The error is the following with a lot of text above it providing the path it took to conclude that it is the specified error.

TypeError: expected str, NoneType found

I am guessing something changed from version 7.5.1 which I see in the pdf of the example where these functions worked well and they are not running now, or I am doing something wrong even though all I do is Kernel > Restart and Run All. Any help would be greatly appreciated.

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2020-04-02 14:10:43 +0100

eric_g
8424 ●10 ●62 ●166 https://luth.obspm.fr/...

updated 2020-04-02 18:32:55 +0100

I've just run the Simon-Mars tensor and Kerr spacetime notebook from the SageManifolds page with the latest stable version of SageMath (9.0). Everything is fine. Which version of SageMath are you using?

edit flag offensive delete link

Comments

Running sage -v on my terminal gives:

SageMath version 8.8, Release Date: 2019-06-26

I will see to updating my version and will try it again. Thank you for the prompt reply.

gvretina ( 2020-04-03 16:44:42 +0100 )edit

Will wait for the pre-built binaries for fedora 30, but I used the CoCalc which is on version 8.9 and it all worked fine. Thank you.

gvretina ( 2020-04-03 17:45:55 +0100 )edit

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower

Stats

Asked: 2020-04-02 12:43:11 +0100

Seen: 320 times

Last updated: Apr 02 '20

weyl, symmetrize and antisymmetrize functions provide error edit