NanoVNA-Saver crashes on startup

[radi8]

Since the Hotfix commit I get this error on starting nanoVNA-Saver. If I checkout the 'Hotfix' sha, everything runs just fine.

/opt/nanovna-saver$ python3 nanovna-saver.py Traceback (most recent call last): File "nanovna-saver.py", line 26, in from NanoVNASaver.main import main File "/opt/nanovna-saver/NanoVNASaver/main.py", line 36, in from NanoVNASaver.NanoVNASaver import NanoVNASaver File "/opt/nanovna-saver/NanoVNASaver/NanoVNASaver.py", line 28, in from .Windows import ( File "/opt/nanovna-saver/NanoVNASaver/Windows/init.py", line 6, in from .DisplaySettings import DisplaySettingsWindow File "/opt/nanovna-saver/NanoVNASaver/Windows/DisplaySettings.py", line 25, in from NanoVNASaver.Charts.Chart import ( File "/opt/nanovna-saver/NanoVNASaver/Charts/init.py", line 2, in from .Frequency import FrequencyChart File "/opt/nanovna-saver/NanoVNASaver/Charts/Frequency.py", line 37, in class FrequencyChart(Chart): File "/opt/nanovna-saver/NanoVNASaver/Charts/Frequency.py", line 453, in FrequencyChart def _data_oob(self, data: list[Datapoint]) -> bool: TypeError: 'type' object is not subscriptable Error in sys.excepthook: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook with os.fdopen(os.open(pr_filename, FileNotFoundError: [Errno 2] No such file or directory: '/var/crash/_opt_nanovna-saver_nanovna-saver.py.1000.crash'

Original exception was: Traceback (most recent call last): File "nanovna-saver.py", line 26, in from NanoVNASaver.main import main File "/opt/nanovna-saver/NanoVNASaver/main.py", line 36, in from NanoVNASaver.NanoVNASaver import NanoVNASaver File "/opt/nanovna-saver/NanoVNASaver/NanoVNASaver.py", line 28, in from .Windows import ( File "/opt/nanovna-saver/NanoVNASaver/Windows/init.py", line 6, in from .DisplaySettings import DisplaySettingsWindow File "/opt/nanovna-saver/NanoVNASaver/Windows/DisplaySettings.py", line 25, in from NanoVNASaver.Charts.Chart import ( File "/opt/nanovna-saver/NanoVNASaver/Charts/init.py", line 2, in from .Frequency import FrequencyChart File "/opt/nanovna-saver/NanoVNASaver/Charts/Frequency.py", line 37, in class FrequencyChart(Chart): File "/opt/nanovna-saver/NanoVNASaver/Charts/Frequency.py", line 453, in FrequencyChart def _data_oob(self, data: list[Datapoint]) -> bool: TypeError: 'type' object is not subscriptable

[radi8]

Sorry LinuxMint 20.3 on several different machines.

[fredericgermain]

It seems that master won't work with python 3.8, since commit 2821f4d0 2022/05/28 at least.

python 3.8 is python3 on Ubuntu 20,04, which I'm using.

Solved by using python3.9 and a few steps. Readme on Ubuntu/linux should be updated most probably.

1. Install python3.9 and pip

sudo apt install python3.9 python3.9-venv -y
python3 -m venv ~/.venv_nano
 . ~/.venv_nano/bin/activate
pip install wheel # can probably be added in setup.cfg ? or that's install by the  pip install -U pip

3. Update pip and run the pip installation

python3.9 -m pip install .

4. Once completed run with the following command

 . ~/.venv_nano/bin/activate
python3.9 nanovna-saver.py