'Find modules ending in windmilltests within installed apps.'

def find_modules(self):

    import django.conf
    names = []
    for app in django.conf.settings.INSTALLED_APPS:
        name = ((app + '.') + 'windmilltests')
        try:
            __import__(name)
            names.append(name)
        except ImportError:
            pass
    return names
