tools.py 文件源码

def __missing__(self, key):
        """
        Always allow accessing the keys 'popup', 'pick', 'pick_file' and
        'pick_folder' as keys.
        """
        if key == 'popup':
            return self.get(IS_POPUP_VAR, False) == '1'
        elif key == 'pick':
            return self.get('_pick', '')
        elif key.startswith('pick_'):
            return self.get('_pick', '') == key.split('pick_')[1]