how to use python get the cursor position(x and y) for a html file produced by Echarts?

[tangdup]

Dear sir or madam:
    I use a html  file produced by Echarts   as the picture to show in an PYQT 
pannel,  and I need to read the  cursor  position of  Echarts picuture in real 
time. How should I do?
    I would appreciate it if you could reply。
   Best wishes.
                                                                                
                                         Yours sincerely