原来的方式是从根节点，一般是html开始逐一向下进行元素定位，这种方式唯一缺点在于整个xpath语句会很长，比如： /html/body ...

A solar tree is a structure resembling a tree that generates solar energy using photovoltaic (PV) panels. It employs principles of biomimicry, using a natural system—in this case the form of a tree—to ...

To get started with Helium, you need Python 3 and Chrome or Firefox. I would recommend creating a virtual environment. This lets you install Helium for just your current project, instead of globally ...