weyl, symmetrize and antisymmetrize functions provide error

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asked 5 years ago

gvretina
11 ●1 ●2

updated 0 years ago

FrédéricC

5436 ●4 ●44 ●121

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.

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answered 5 years ago

eric_g
8564 ●10 ●62 ●168 https://luth.obspm.fr/...

updated 5 years ago

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?

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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 ( 5 years ago )

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 ( 5 years ago )

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Last updated: Apr 02 '20

weyl, symmetrize and antisymmetrize functions provide error savecancel

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