Install failure - TypeError in pycommand.py

Question

Install failure - TypeError in pycommand.py

TheGreatFox opened this issue 4 years ago · comments

Issue:
When installing quantum-honeycomp following the instructions in the README, installer fails with the following:
File "../Downloads/quantum-honeycomp/pysrc/interpreter/pycommand.py", line 48, in install_dependencies
os.system(pip+" install "+l) # install this library
TypeError: unsupported operand type(s) for +: 'Nonetype' and 'str'

Additional info:

OS: Ubuntu 20.04 LTS
Updates: New virtual machine and all package updates applied
It appears that you are calling pip using a method not recommended by the developer. See additional information here: https://pip.pypa.io/en/latest/user_guide/#using-pip-from-your-program.
See additional info here: https://stackoverflow.com/questions/12332975/installing-python-module-within-code

TheGreatFox · Answer 1 · Tue Jun 16 2020 20:44:22 GMT+0800 (China Standard Time)

Follow-up:
This same error is also seen for Ubuntu 18.04.3 LTS (fresh installation).
This only appears on new installations. An existing installation on an old VM of 18.04 updates correctly, as this process does not depend on the installer (git pull).

Jose Lado · Answer 2 · Tue Jun 16 2020 20:51:55 GMT+0800 (China Standard Time)

Thanks TheGreatFox for the note, I just did an update now, now it should install correctly.

TheGreatFox · Answer 3 · Tue Jun 16 2020 21:03:39 GMT+0800 (China Standard Time)

Addressed the installer issue, but brings up a bad python interpreter issue now for a fresh install. Opening another bug since the installer issue was resolved.