核心代码:

def add_camera(self):
   '''
       添加摄像头
   :return: None
   '''
   num = self.tableWidget.rowCount()
   self.tableWidget.setRowCount(num+1)

def remove_camera(self):
   '''
       删除摄像头
   :return:
   '''
   index = self.tableWidget.selectedRanges()			# 1
   index = index[0].bottomRow()
   self.tableWidget.removeRow(index)
  1. 是为了获取到光标选中的行索引