python - Tkinter:当我在按住按钮的框架旁边创建一个框架时，按钮会上下跳跃

Question

4 按钮位于左上角，使用名为 menuFrame 的框架来固定它。
程序启动时，原来停留在正确的位置
然而。当我使用图书搜索功能时，
按钮刚刚下降到其他地方。
我完全不知道发生了什么
我不知道是不是我以前通过不同按钮更改页面的方式导致了这种意外结果。
我用的方法是全删ItemFrame它保存页面中的所有内容并创建一个新的
在同一项目中，在我使用 .destroy 删除框架后功能，item frame中的widget不能到窗口的最上层。
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import tkinter as tk

root = tk.Tk()

root.title('Library System')
root.geometry('1000x600')

# create frames
menuFrame = tk.Frame(root,width = 20)
menuFrame.grid(row=0, column=0)

global itemFrame 
itemFrame = tk.Frame(root)
itemFrame.grid(row=0,column=1)

def create_itemFrame():
    global itemFrame 
    itemFrame = tk.Frame(root)
    itemFrame.grid(row=0,column=1)

def clear_itemFrame():
    itemFrame.destroy()

def print_records(Frame,n):

    dataframe = tk.Frame(Frame)
    dataframe.grid(row=1,column=1)
    tk.Label(dataframe,text="Book ID", height = 1, width = 10).grid(row=1+n,column=1)
    tk.Label(dataframe,text="ISBN", height = 1, width = 10).grid(row=1+n,column=2)
    tk.Label(dataframe,text="Title", height = 1, width = 40).grid(row=1+n,column=3)
    tk.Label(dataframe,text="Author", height = 1, width = 20).grid(row=1+n,column=4)
    tk.Label(dataframe,text="Purchase Date", height = 1, width = 13).grid(row=1+n,column=5)
    tk.Label(dataframe,text="Member Id", height = 1, width = 8).grid(row=1+n,column=6)


def booksearch():
    def searching():
        SearchKeyword = str(SearchKeyword_entry.get())
        clear_itemFrame()
        create_itemFrame()
        SearchresultFrame = tk.Frame(itemFrame)
        SearchresultFrame.grid(row=0,column=1) 
        tk.Label(SearchresultFrame,text="Book ID", height = 1, width = 10).grid(row=0,column=1)
        tk.Label(SearchresultFrame,text="ISBN", height = 1, width = 10).grid(row=0,column=2)
        tk.Label(SearchresultFrame,text="Title", height = 1, width = 40).grid(row=0,column=3)
        tk.Label(SearchresultFrame,text="Author", height = 1, width = 20).grid(row=0,column=4)
        tk.Label(SearchresultFrame,text="Purchase Date", height = 1, width = 13).grid(row=0,column=5)
        tk.Label(SearchresultFrame,text="Member Id", height = 1, width = 8).grid(row=0,column=6)
        
  
    #searching frame
    create_itemFrame()
    Searchingframe = tk.Frame(itemFrame)
    Searchingframe.grid(row=0,column=1)
    SearchKeyword_label = tk.Label(Searchingframe, text='Search Keyword')
    SearchKeyword_label.grid(row=0,column=1)
    SearchKeyword_entry = tk.Entry(Searchingframe)
    SearchKeyword_entry.grid(row=0,column=2)
    SearchKeyword_btn = tk.Button(Searchingframe, text='Search', command=searching)
    SearchKeyword_btn.grid(row=0,column=3)
    print_records(itemFrame,1)

def bookreturn():
    def returning():
        return 0
    create_itemFrame()
    Returnframe = tk.Frame(itemFrame)
    Returnframe.grid(row=0,column=1)
    SearchKeyword_label = tk.Label(Returnframe, text='Enter Book ID')
    SearchKeyword_label.grid(row=0,column=1)
    SearchKeyword_entry = tk.Entry(Returnframe)
    SearchKeyword_entry.grid(row=0,column=2)
    SearchKeyword_btn = tk.Button(Returnframe, text='Return', command=returning)
    SearchKeyword_btn.grid(row=0,column=3)

 
# different items on different menus
def booksearch_page():
    clear_itemFrame()
    booksearch()
    print(0)

def bookcheckout_page():
    clear_itemFrame()
    print(1)

def bookweed_page():
    clear_itemFrame()
    print(2)

def bookreturn_page():
    clear_itemFrame()
    bookreturn()
    print(3)


# persistent menu buttons
menuButton1 = tk.Button(menuFrame, text="booksearch", height = 1, width = 15,command=booksearch_page)
menuButton1.grid(row=0, column=0)
menuButton2 = tk.Button(menuFrame, text="bookcheckout", height = 1, width = 15,command=bookcheckout_page)
menuButton2.grid(row=1, column=0)
menuButton3 = tk.Button(menuFrame, text="bookweed", height = 1, width = 15,command=bookweed_page)
menuButton3.grid(row=2, column=0)
menuButton4 = tk.Button(menuFrame, text="bookreturn", height = 1, width = 15,command=bookreturn_page)
menuButton4.grid(row=3, column=0)
root.mainloop()

在物品展示框中创建东西后:
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Answer 1

您可以设置 sticky='n'在 grid(...)将菜单按钮放在顶部，将小部件放在 itemFrame 中在顶部:

# create frames
menuFrame = tk.Frame(root, width=20)
menuFrame.grid(row=0, column=0, sticky='n')

#global itemFrame # it is not necessary
itemFrame = tk.Frame(root)
itemFrame.grid(row=0, column=1, sticky='n')

def create_itemFrame():
    global itemFrame 
    itemFrame = tk.Frame(root)
    itemFrame.grid(row=0, column=1, sticky='n')