Implementing my own event loop in a wxPython application

Question

I’m writing a wxPython application that will be doing quite a bit of data analysis and display. The way I’ve written it so far has led to problems when two threads try to change

Answer 1

For posterity, here is the decorator I created using Yoriz’s answer.

def run_on_main_thread(fn):
    """Decorator. Forces the function to run on the main thread.

    Any calls to a function that is wrapped in this decorator will
    return immediately; the return value of such a function is not
    available.

    """
    @wraps(fn)
    def deferred_caller(*args, **kwargs):
        # If the application has been quit then trying to use
        # CallAfter will trigger an assertion error via the line
        #     assert app is not None, 'No wx.App created yet'
        # Since assertions are optimized out when -O is used,
        # though, it seems safest to perform the check ourselves,
        # and also catch the exception just in case.
        if wx.GetApp() is not None:
            try:
                wx.CallAfter(fn, *args, **kwargs)
            except AssertionError:
                pass

    return deferred_caller