I got the following error while running the sage -t command.
$ sage -t test.py Traceback (most recent call last): File "/usr/share/sagemath/bin/sage-runtests", line 178, in <module> DC = DocTestController(options, args) File "/usr/lib/python3/dist-packages/sage/doctest/control.py", line 358, in __init__ for pkg in list_packages('optional', local=True).values(): File "/usr/lib/python3/dist-packages/sage/misc/package.py", line 236, in list_packages for p in os.listdir(SAGE_PKGS): FileNotFoundError: [Errno 2] No such file or directory: '/usr/share/sagemath/build/pkgs' I attached the following information about the version:
Distributor ID: Ubuntu Description: Ubuntu 20.04.3 LTS Release: 20.04
Python 3.8.10
$ sage ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version 9.0, Release Date: 2020-01-01 │ │ Using Python 3.8.10. Type "help()" for help. │ └────────────────────────────────────────────────────────────────────┘ sage: