'Get project path as a list to be added to PYTHONPATH'

def get_pythonpath(self, at_start=False):

    if at_start:
        current_path = self.get_option('current_project_path', default=None)
    else:
        current_path = self.get_active_project_path()
    if (current_path is None):
        return []
    else:
        return [current_path]
