Django app in Eclipse won't run after upgrade to django 1.4

Question

After upgrading to Django 1.4, I now get the following error message:

raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (self.SETTINGS_MODULE, e))
ImportError: Could not import settings 'settings.py' (Is it on sys.path?): No module named py

I read that it might have something to do with pydev 2.4 eg: here, so I upgraded pydev to the latest version, 2.5. I am using eclipse indigo.

I started to have a look at the run cnofiguration, and noticed that the django 1.3 egg was still being referenced. So I went to windows/preferences/pydev/interpreter-python, and the 1.3 egg was being referenced in the system PYTHON path.

To try and correct this, I removed the existing python interpreter, and re-added a new one. My python is run from venv, so I added this. An error comes up:

I don't think this is related, but I can see that /venv/lib has appears in the System PYTHONPATH list, whereas in Windows the folder is called /venv/Lib, so I added this as well. Still the new django egg hasn't been include, so I manually added this under the 'Libraries' window.

However, I'm still receiving the error message.

The app runs fine from the command line.

Answer 1

Figured this out after a few hours of trying different things.

I created a new Django project using the pydev 2.5 just to see what would happen, and I noticed that the 'django settings module' entry (see below) was appname.settings. Previously I had put 'settings.py'. I removed the entry entirely, which cleared up the first problem.

After this I was getting a 'module appname not found' error, so I tried putting an empty __init__.py file in the root of my app, which seemed to work.

Answer 2

In a virtualenv, this is usually the case where you forgot to add the /Lib from the base python install during the install process (so, when searching in the PYTHONPATH it's not finding things such as 'threading.py' or 'traceback.py', etc.