PyCharm中运行pytest出现空测试套件问题求助

Let's break down and fix the problem you're facing when running pytest in PyCharm. First, let's recap your setup to make sure we're aligned:

Your Setup Details #

• Test file path: C:\Temp\agents_automation_2\x_tests.py
• Test code:

import pytest
def test_mytest():
    assert False

• Partial run output:

C:\Python36-32\python.exe "C:\Program Files\JetBrains\PyCharm 2017.3.2\helpers\pycharm\_jb_pytest_runner.py" --path C:/Temp/agents_automation_2
Launching py.test with arguments C:/Temp/agents_automation_2 in C:\Temp\agents_automation_2...

It looks like PyCharm is initiating the pytest runner, but not completing the test execution or showing results. Here are the most likely fixes, ordered by simplicity:

1. Run the Test File Directly (Not Just the Directory) #

Instead of running the entire agents_automation_2 directory, try targeting the specific test file directly:

• Right-click on x_tests.py in PyCharm's project explorer
• Select Run 'pytest in x_tests.py'
  This tells PyCharm to create a dedicated configuration for that file, eliminating ambiguity about which tests to execute.

2. Verify Your PyTest Run Configuration #

If the above doesn't work, double-check your run configuration settings:

1. Click the run dropdown in the top-right of PyCharm → Select Edit Configurations...
2. If you don't have an existing pytest config, click the + button and choose pytest
3. For the Target field, select Script path and browse to your x_tests.py file
4. Confirm the Python interpreter is set to C:\Python36-32\python.exe (the environment you intend to use)
5. Save the configuration and run it again

3. Ensure pytest is Installed in Your Target Interpreter #

It's possible the Python interpreter PyCharm is using doesn't have pytest installed. Let's fix that:

1. Open PyCharm's built-in Terminal
2. Run this command to install a PyCharm 2017.3.2-compatible pytest version:

   C:\Python36-32\python.exe -m pip install pytest==4.6.11
   

   (Newer pytest versions aren't fully supported by older PyCharm releases like 2017.3.2)
3. Test if pytest works outside PyCharm first by running:

   cd C:\Temp\agents_automation_2
   C:\Python36-32\python.exe -m pytest x_tests.py -v
   

   You should see the assertion failure output here. If this works, the issue was simply missing pytest in the selected interpreter.

4. Enable the PyTest Plugin in PyCharm #

Older PyCharm versions sometimes disable plugins by default:

1. Go to File → Settings → Plugins
2. Search for pytest in the plugin list
3. Make sure the checkbox next to it is checked
4. Restart PyCharm to apply the change

内容的提问来源于stack exchange，提问作者David Fliguer