tkinter批量循环创建按钮

CourseList = res['courseList']
#
button_list = []
sy=20
for i in range(len(CourseList)):
    CourseList_i=CourseList[i]
    courseName = CourseList_i['courseName']
    bt = tk.Button(wind_course, text=courseName)
    button_list.append(bt)
for i in range(len(CourseList)):
    button_list[i].place(x=0,y=sy)
    sy+=20