Why failure to launch python 3.9 in script?

asked 2022-03-16 17:07:45 +0200

LouP
21 ●1 ●1 ●2

On My Mac I've downloaded Sage 9.4 which has Python 3.9 and put it into my Applications folder after extracting. However, when I try to run a script using a shebang with the path to Python3.9 I have a problem with a binary_pkg that can't be found to run Python 3.9 in the Sage package.

the error message is

dyld: Library not loaded: /Users/buildbot-sage/slave/binary_pkg/build/source/SageMath/jc4b6yulaujayb9sr94ia88eourzeqip0oidmas3/local/lib/libpython3.9.dylib

Running a script worked for earlier Sagemath packages using Python2.7. Does anyone understand this?

answered 2022-03-17 15:01:01 +0200

Marc Culler
131 ●1 ●6

The library path in your error message indicates that you downloaded a "command line" binary tarball from one of the SageMath mirrors but you never ran the sage executable that it contains. The first time you run sage it will ask you to wait while it runs a script that replaces all of the buildbot paths with hard wired paths to the directory into which you unpacked the tarball. After that, the sage installation cannot be moved.

This also indicates that you chose to ignore the recommendation for how to install sage for macOS as published on the Sage download page. My suggestion is that you follow that recommendation and download the SageMath app from this github project. While you are at it, you may as well download version 9.5.

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Thanks. That worked.

LouP ( 2022-03-22 22:43:05 +0200 )edit

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Why failure to launch python 3.9 in script?