Tkinter中如何让下方LabelFrame随窗口拉伸且与上方无空隙（grid布局）

我是Tkinter新手，正在开发一个用户名（moniker）查询工具的前端。使用grid布局时，尝试通过sticky属性让组件随窗口尺寸调整拉伸，但当前拉伸窗口向下时，上方和下方的LabelFrame之间出现多余空隙。期望下方LabelFrame随窗口拉伸，且不与上方框架产生空隙：已为下方框架设置sticky="nsew"，但若为上方框架设置sticky south会导致其也随窗口向下拉伸。

相关代码 #

def query_window(conn):
    window.destroy()
    q_window = Tk()
    q_window.title('Moniker Lookup')
    q_window.columnconfigure(0, weight=1)
    q_window.rowconfigure(0, weight=1)
    path = os.path.realpath(
        os.path.join(os.getcwd(), os.path.dirname(__file__)))
    icon = PhotoImage(file = path + "..\\assets\\main_icon.png")
    q_window.iconphoto(False, icon)
    #q_window.geometry("700x700")

    #Create a search frame for the moniker search to sit in
    search_frame = tk.LabelFrame(q_window, text='Moniker Search')
    search_frame.rowconfigure(0, weight=1)
    search_frame.columnconfigure(0, weight=1)
    search_frame.grid(row = 0, column=0, pady=GLOBAL_PAD_Y, padx=GLOBAL_PAD_X, sticky="nw")

    #Create a results frame for the treeview widget to sit in.
    output_frame = tk.LabelFrame(q_window, text='Results')
    output_frame.rowconfigure(0, weight=1)
    output_frame.columnconfigure(0, weight=1)
    output_frame.grid(row = 1, column=0, pady=GLOBAL_PAD_Y, padx=GLOBAL_PAD_X, sticky="nsew")

    #Create area for user to provide Moniker
    moniker_label = tk.Label(search_frame, text="Moniker:")
    moniker_label.grid(row=0, column = 2, pady = GLOBAL_PAD_Y, padx = GLOBAL_PAD_X)
    moniker_field = tk.Entry(search_frame)
    moniker_field.grid(row=0, column = 3, pady=GLOBAL_PAD_Y, padx=GLOBAL_PAD_X, columnspan=2)

    #Create a run button
    run_button = tk.Button(search_frame, text="Run", command=lambda:
    moniker_query(moniker_field, conn, q_window), width=10)
    run_button.grid(row=0, column = 5, pady = GLOBAL_PAD_Y, padx = GLOBAL_PAD_X)

    #Create a treeview to display output
    tv1 = ttk.Treeview(output_frame)
    tv1.columnconfigure(0, weight=1)
    tv1.rowconfigure(0, weight=1)

    #Create the tree scrolls
    tree_scroll_y = tk.Scrollbar(output_frame, orient = "vertical", command=tv1.yview)
    tree_scroll_x = tk.Scrollbar(output_frame, orient="horizontal", command=tv1.xview)
    tv1.configure(xscrollcommand=tree_scroll_x.set, yscrollcommand=tree_scroll_y.set)
    tv1.grid(row=0, column=0, pady = GLOBAL_PAD_Y, padx = GLOBAL_PAD_X, sticky="nsew")
    tree_scroll_x.grid(row=1, column=0, sticky=tk.E+tk.W)
    tree_scroll_x.grid_rowconfigure(0, weight=1)
    tree_scroll_y.grid(row=0, column=1, sticky=tk.N+tk.S)
    tree_scroll_x.grid_columnconfigure(0, weight=1)

窗口状态截图 #

• 默认状态：
  
• 拉伸后状态：
  

解决方案 #

问题核心在于主窗口的行权重配置错误，以及上方框架的sticky属性设置不当。修改步骤如下：

1. 调整主窗口的行权重：
   将主窗口的行配置代码：

q_window.rowconfigure(0, weight=1)

替换为：

q_window.rowconfigure(0, weight=0)  # 上方框架不分配垂直方向额外空间，保持固定高度
q_window.rowconfigure(1, weight=1)  # 下方框架分配所有垂直额外空间，随窗口拉伸

2. 修改上方框架的sticky属性：
   将search_frame.grid的sticky参数从"nw"改为"ew"，让上方框架仅在水平方向拉伸，垂直方向保持原高度：

search_frame.grid(row = 0, column=0, pady=GLOBAL_PAD_Y, padx=GLOBAL_PAD_X, sticky="ew")

修改完成后，拉伸窗口时上方搜索框架会水平铺满窗口，高度固定；下方结果框架会填充所有垂直方向的额外空间，两者之间不会出现空隙。

内容的提问来源于stack exchange，提问作者Buzzkillionair