Python3 uses pywin32 to upload file operations

import win32con
import win32gui

class WinUpLoadFile:

    def winUpLoadFile(self,file_path,title):
        #一级顶层窗口，此处title为上传窗口名称，浏览器不一样上传窗口名称不一样
        dialog = win32gui.FindWindow("#32770",title)
        #二级窗口
        ComboBoxEx32 = win32gui.FindWindowEx(dialog,0,"ComboBoxEx32",None)
        #三级窗口
        comboBox = win32gui.FindWindowEx(ComboBoxEx32,0,"ComboBox",None)
        #四级窗口
        edit = win32gui.FindWindowEx(comboBox,0,'Edit',None)
        button = win32gui.FindWindowEx(dialog,0,'Button',None)
        #执行操作 输入文件路径
        win32gui.SendMessage(edit,win32con.WM_SETTEXT,None,file_path)
        #点击打开上传文件
        win32gui.SendMessage(dialog,win32con.WM_COMMAND,1,button)


if __name__=="__main__":
    WinUpLoadFile().winUpLoadFile("C:\\Users\\S\Desktop\\html\\jquery.html","文件上传")