ERROR tests/test_perception4e.py

[VyS95]

I followed the installation guide and after runing py.test I got this error:

`PS C:\Windows\System32\aima-python> py.test
===================== test session starts===================================
platform win32 -- Python 3.9.7, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: C:\Windows\System32\aima-python, configfile: pytest.ini
plugins: anyio-2.2.0, cov-3.0.0
collected 410 items / 1 error / 409 selected

====================== ERRORS ===========================
_______ ERROR collecting tests/test_perception4e.py _____________________
ImportError while importing test module 'C:\Windows\System32\aima-python\tests\test_perception4e.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
C:\ProgramData\Anaconda3\lib\importlib_init_.py:127: in import_module
return _bootstrap.gcd_import(name[level:], package, level)
tests\test_perception4e.py:5: in
from perception4e import *
perception4e.py:3: in
import cv2
C:\ProgramData\Anaconda3\lib\site-packages\cv2_init.py:8: in
from .cv2 import *
E ImportError: DLL load failed while importing cv2: The specified module could not be found.
================ short test summary info ==================================
ERROR tests/test_perception4e.py
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
========================= 1 error in 4.82s ===================================
PS C:\Windows\System32\aima-python>`

I tried
pip install keras==2.4.0

pip install --upgrade pip

pip install tensorflow

pip install tf-nightly

please help me fix. thank you

[meloncruuush]

I encountered this issue when running the tests outside of a virtual environment. You probably have newer versions of this libraries already installed, which is what is possibly causing the issue.
I suggest that you create a virtual environment specific for this repo, and then follow the installation procedure again.

In case you don't know how to do it, and for future users, here is a modified version of the installation guide with the addition of virtual environments.

Installation Guide with Venv

To download the repository:

git clone https://github.com/aimacode/aima-python.git

cd aima-python

Create the virtual environment

python -m venv .env

Activate the virtual environment

./.env/Scripts/activate

Then you need to install the basic dependencies to run the project on your system:

pip install -r requirements.txt

You also need to fetch the datasets from the aima-data repository:

git submodule init
git submodule update

Wait for the datasets to download, it may take a while. Once they are downloaded, you need to install pytest, so that you can run the test suite:

pip install pytest

Then to run the tests:

py.test