Question

当前，我有文件目录

"../Model.py"

此模型有一个名为 Test 的类。

使用目录的字符串，我要导入并使用Test类。

我该怎么做？

（字符串将动态更改）

Answer 1

发件人：https://docs.python.org/3/tutorial/modules.html#the-module-search-path

我对此进行了测试，我相信它也应该对您有用。该代码应如下所示：

class CardStack extends StatefulWidget {
  @override
  _CardStackState createState() => new _CardStackState();
}

class _CardStackState extends State<StatefulWidget> {
  @override
  Widget build(BuildContext context) {
    return new Container(
      padding: EdgeInsets.all(32),
      child: SizedBox.expand(
        child: LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {
          RenderBox box = context.findRenderObject() as RenderBox;
          return new Stack(
            children: <Widget>[
              new Draggable(
                key: ObjectKey('card1'),
                child: new Card(
                  color: Colors.red,
                  shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(10)),
                  child: Container(
                  ),
                ),
                feedback: new Card(
                  color: Colors.red,
                  shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(10)),
                  child: Container(
                    width: box.size.width, // TODO: how to get same size as child??
                    height: box.size.height, // TODO: how to get same size as child??
                  ),
                ),
                childWhenDragging: Container(),
              ),
              new Draggable(
                key: ObjectKey('card2'),
                child: new Card(
                  color: Colors.green,
                  shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(10)),
                  child: Container(
                  ),
                ),
                feedback: new Card(
                  color: Colors.green,
                  shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(10)),
                  child: Container(
                    width: box.size.width,
                    height: box.size.height,
                  ),
                ),
                childWhenDragging: Container(),
              ),
              new Listener(
                onPointerDown: (PointerDownEvent event) {
                  print(event.position);
                },
                child: new Draggable(
                  key: ObjectKey('card3'),
                  child: new Card(
                    color: Colors.blue,
                    shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(10)),
                    child: Container(
                    ),
                  ),
                  feedback: new Card(
                    color: Colors.blue,
                    shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(10)),
                    child: Container(
                      width: box.size.width,
                      height: box.size.height,
                    ),
                  ),
                  childWhenDragging: Container(),
                ),
              ),
            ],
          );
        }),
      ),
    );
  }
}

从文件目录（Python）导入文件

1 个答案: