Issue using pyserial on Rpi with python3.7

Question

I don't know what when wrong but somehow I can't use the serial module from pyserial.

(venv) pi@raspberrypi:~/workspace/test $ python
Python 3.7.0 (default, Apr 28 2020, 16:06:28)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import serial
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'serial'
>>>

but according to pip list it is installed

(venv) pi@raspberrypi:~/workspace/test $ pip3 list
Package           Version
----------------- -----------
...
pyserial          3.4
...

I installed python3.7 and created a python alias for it, in case that matters. Another funny thing is that it seems like I cannot uninstall it

(venv) pi@raspberrypi:~/workspace/test $ sudo pip3 uninstall pyserial
Not uninstalling pyserial at /usr/lib/python3/dist-packages, outside environment /usr
Can't uninstall 'pyserial'. No files were found to uninstall.

Someone has an idea how to solve that?

Answer 1

You need to install Python modules for every version of Python you want to use.

The correct way to install pyserial is from the repositories.

sudo apt install python-serial # Python 2
sudo apt install python3-serial # Python 3

If you are using pip (why?) try using pip3 to install pyserial.