Question

I am new to Python so bear with me. I use the pyDev plugin fore eclipse. There are three files:

tool.py:

from gui import Tool_Window
import wx
import settings

if __name__ == '__main__':

    window = wx.App()
    Tool_Window(None, settings.WindowHeader)
    window.MainLoop()

Tool_Window.py:

from Tool import settings
import wx

class Tool_Window(wx.Frame):

def __init__(self, parent, title):

    super(Tool_Window,self).__init__(parent, title = title)

    self.SetDimensions(settings.WindowOpenX,
                       settings.WindowOpenY,
                       settings.WindowWidth,
                       settings.WindowHeight)

settings.py:

WindowHeader = 'The SuperAwesome Tool'
WindowOpenX = 500
WindowOpenY = 100
WindowWidth = 200
WindowHeight = 400

The “tool.py” file is in a package called “Tool”, as is the “settings.py” file, and “Tool_Window” is in the package “gui”.

I am getting error messages from a previous file I had in the project, now renamed to the “settings.py”. I have tried cleaning the project in Eclipse, but nothing happens. The error message looks like:

Traceback (most recent call last):
  File "/home/oystein/workspaces/python/awesome.tool/src/Tool/tool.py", line 8, in <module>
    Tool_Window(None, settings.WindowHeader)
  File "/home/oystein/workspaces/python/awesome.tool/src/gui/__init__.py", line 12, in __init__
    # ;-)
AttributeError: class GeneralParameters has no attribute 'WindowParameters'

Previously I had a class named GeneralParameters with a sub-class WindowParameters, as I wanted to access static variables for settings. I relaized Python couldn’t do it like that and changed it to the “settings.py” file.

I run the program from “tool.py”

Can anyone see what’s wrong here?

Answer 1

You are running stale byte-code, remove the .pyc files and rerun your code.

The traceback reads the source from the .py file but is built from the bytecode, and the fact that is shows that the error is on a line that only consists of a comment is a hint that things are no longer in sync.

Normally, Python will clean up the .pyc file when stale, but only if the .py modification time is newer.