1.问题描述：不能导入自定义类

错误内容：This inspection detects names that should resolve but don't. Due to dynamic dispatch and duck typing, this is possible in a limited but useful number of cases. Top-level and class-level items are supported better than instance items

截图：（count.py文件不能导入在相同路径下的pub.py的方法）

解决方法1：将导入部分写成：from WebTest.project.pub import add （将路径明确写入）

解决方法2：进入：File—setting—Bulidout,Excution,Deployment—Console—Python Console 如下图操作

之后右击项目，如下图操作