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sourceperl / pyModbusTCP

A simple Modbus/TCP library for Python
MIT License
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Module not found error #50

Closed IGDT closed 2 years ago

IGDT commented 2 years ago

On my raspberry pi 4 I tried to code some basic stuff (like printing messages) to test out the pymodbustcp. For some reason, it doesn't want to find the module of pymodbustcp and it gives this message when I run the code: /home/pi/Desktop/Laadpunt/venv/bin/python /home/pi/Desktop/Laadpunt/main.py Traceback (most recent call last): File "/home/pi/Desktop/Laadpunt/main.py", line 7, in <module> from pyModbusTCP.client import ModbusClient ModuleNotFoundError: No module named 'pyModbusTCP' Process finished with exit code 1

I installed both "sudo pip2 install pyModbusTCP" as "sudo pip3 install pyModbusTCP" in my console and that says:

pi@raspberrypi:~ $ sudo pip install pyModbusTCP Traceback (most recent call last): File "/usr/local/bin/pip", line 6, in <module> from pip._internal.cli.main import main ModuleNotFoundError: No module named 'pip._internal.cli.main' pi@raspberrypi:~ $ What can I do to fix this issue?

superpanza commented 2 years ago

Did you install the library after the venv has been activated? It seems that you install the library system wide and then launch the python executable inside the virtual env. Try to activate the virtual env first with source /home/pi/Desktop/Laadpunt/venv/bin/activate. Your terminal should prompt something like (venv) pi@raspberrypi: then install the lib via pip pip install pyModbusTCP. Now you can launch your code withpython /home/pi/Desktop/Laadpunt/main.py or move inside the folder and python main.py. Hope this can help

IGDT commented 2 years ago

Did you install the library after the venv has been activated? It seems that you install the library system wide and then launch the python executable inside the virtual env. Try to activate the virtual env first with source /home/pi/Desktop/Laadpunt/venv/bin/activate. Your terminal should prompt something like (venv) pi@raspberrypi: then install the lib via pip pip install pyModbusTCP. Now you can launch your code withpython /home/pi/Desktop/Laadpunt/main.py or move inside the folder and python main.py. Hope this can help

This worked, thank you for the response. Do all modules have to be installed like this? (so I don't mess up in the future)

sourceperl commented 2 years ago

"Do all modules have to be installed like this? (so I don't mess up in the future)"

Yes, if you are in a virtual environment. It's a good practice, which I don't use often enough... 😉