Venv - Python Virtual Environment on Raspberry Pi

[DanneA]

I try to follow a book and also Pythons document page to get a venv to work.
The install works but when I want to get a library through pip and I think it
works so far but when I wont to use the library it do not work. I get an answer
that the module do not exist.

Output:
(robot-venv) danne@RPi-robot:~ $ which python /home/danne/robot-venv/bin/python (robot-venv) danne@RPi-robot:~ $ python Python 3.11.2 (main, Apr 28 2025, 14:11:48) [GCC 12.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from adafruit_crickit import crickit Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/danne/robot-venv/lib/python3.11/site-packages/adafruit_crickit.py", line 29, in <module> import board File "/home/danne/robot-venv/lib/python3.11/site-packages/board.py", line 48, in <module> from adafruit_blinka.board.raspberrypi.raspi_4b import * File "/home/danne/robot-venv/lib/python3.11/site-packages/adafruit_blinka/board/raspberrypi/raspi_4b.py", line 6, in <module> from adafruit_blinka.microcontroller.bcm2711 import pin File "/home/danne/robot-venv/lib/python3.11/site-packages/adafruit_blinka/microcontroller/bcm2711/pin.py", line 7, in <module> from adafruit_blinka.microcontroller.generic_linux.rpi_gpio_pin import Pin File "/home/danne/robot-venv/lib/python3.11/site-packages/adafruit_blinka/microcontroller/generic_linux/rpi_gpio_pin.py", line 6, in <module> from RPi import GPIO ModuleNotFoundError: No module named 'RPi'

I have been reading and doing uninstall and install many times in different ways but
get the same "ModuleNotFoundError:". I have lookup in adafuit for the Crickit and it
all show how to install and go on but it is not working.
When I follow the install in Python's document it gets the same. Is it more that is wrong,
when the output writes this "line x, in <module>" on the rows? Is that wrong also?

What is wrong???

[Larz60+]

while your virtualenv is active, type from command line: pip list
do you see the rpi package in the list?
if not reinstall, making sure virtual environment is activated

[Plyth]

I’m jumping in here. I ran into the same error before. The problem seems to be with the RPi.GPIO module isn’t installed inside the virtual environment.

While the venv is active, try running:

bash
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Edit
pip install RPi.GPIO
If that doesn’t fix it, the library might only be available system-wide. You could try:

bash
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sudo apt install python3-rpi.gpio
But that installs it outside the venv. Not perfect, but it might help for testing. Let me know if that works for you.

[Pedroski55]

I may be wrong, but when I look around, the import should be:

import RPi.GPIO 

(Note the small i in RPi) or

import RPi.GPIO as GPIO

or as any alias you like.

The OP has:

from RPi import GPIO

No raspberries here!

[Larz60+]

I may be wrong, but when I look around, the import should be:

Pedroski55, You are correct, didn't catch that one.
The import should definitely be
import RPi.GPIO
or
import RPi.GPIO as GPIO