如何正确设置Tkinter组件布局，使其可正常扩展并显示？

我写的Tkinter程序布局混乱，组件尺寸及扩展行为异常，试过多种办法都没解决。以下是我的代码：

from tkinter import Tk, Label, Scrollbar, Listbox, Entry, Button, mainloop

root = Tk()
root.title('GUI')

text = r"""
 _____ _       _     _
|  ___(_)_ __ (_)___| |__   ___ _ __
| |_  | | '_ \| / __| '_ \ / _ \ '__|
|  _| | | | | | \__ \ | | |  __/ |
|_|   |_|_| |_|_|___/_| |_|\___|_|
=====================================
Press 'Y' to start!
Remember to press it at the start of the sum!
You will need to do the first question before starting it
(Start the bot on the second question)
"""

header=Label(root,text=text, font=("TkFixedFont"),justify='left')
header.grid(column=0,row=0)

scrollbar = Scrollbar(root)
scrollbar.grid(column=5,row=0,sticky='ns')
mylist = Listbox(root, yscrollcommand=scrollbar.set)

l1 = Label(root, text='Delay: ')
l1.grid(column=0,row=3,sticky='w')

delayEntry = Entry(root,width=4)
delayEntry.grid(column=1,row=3,sticky='w')

b1 = Button(root, text='Set', command=mainthread.setDelay)
b1.grid(column=2,row=3,sticky='w')
    
mylist.grid(column=3,row=0,sticky='nsew')
scrollbar.config(command=mylist.yview)

root.rowconfigure(1, weight=1)
root.columnconfigure(1, weight=1)

mainloop()

当前GUI表现：布局混乱，组件尺寸及扩展不符合预期
期望效果：布局规整美观，窗口调整时组件能正确适配尺寸并扩展

问题分析 #

1. 行列权重配置错误：原代码给未使用的行1、列1设置了weight，但实际需要扩展的是承载Listbox的行0、列3
2. 组件布局参数缺失：标题Label未设置跨列和sticky属性，导致无法填充分配空间，还会和下方控件布局重叠
3. 滚动条列位置错位：滚动条列号与Listbox不对应，导致布局偏移

修复方案 #

1. 调整行列权重，给行0和列3设置weight=1，让这两个区域随窗口大小自动扩展
2. 给标题Label添加columnspan=3和sticky='nsew'，确保文本区域填充对应空间且不与下方控件冲突
3. 修正滚动条的列位置，与Listbox列号对应，避免布局错位
4. 调整Delay相关控件的行号，避免和标题区域的行冲突

修改后的代码 #

from tkinter import Tk, Label, Scrollbar, Listbox, Entry, Button, mainloop

root = Tk()
root.title('GUI')

text = r"""
 _____ _       _     _
|  ___(_)_ __ (_)___| |__   ___ _ __
| |_  | | '_ \| / __| '_ \ / _ \ '__|
|  _| | | | | | \__ \ | | |  __/ |
|_|   |_|_| |_|_|___/_| |_|\___|_|
=====================================
Press 'Y' to start!
Remember to press it at the start of the sum!
You will need to do the first question before starting it
(Start the bot on the second question)
"""

# 标题标签跨3列，设置sticky填充对应空间
header = Label(root, text=text, font=("TkFixedFont"), justify='left')
header.grid(column=0, row=0, columnspan=3, sticky='nsew')

# 滚动条与Listbox布局对齐
scrollbar = Scrollbar(root)
scrollbar.grid(column=4, row=0, sticky='ns')
mylist = Listbox(root, yscrollcommand=scrollbar.set)
mylist.grid(column=3, row=0, sticky='nsew')
scrollbar.config(command=mylist.yview)

# Delay控件调整到行1，避免与标题区域冲突
l1 = Label(root, text='Delay: ')
l1.grid(column=0, row=1, sticky='w')

delayEntry = Entry(root, width=4)
delayEntry.grid(column=1, row=1, sticky='w')

b1 = Button(root, text='Set', command=mainthread.setDelay)
b1.grid(column=2, row=1, sticky='w')

# 配置可扩展的行列：行0承载标题和Listbox，列3承载Listbox
root.rowconfigure(0, weight=1)
root.columnconfigure(3, weight=1)

mainloop()

修改后，窗口缩放时Listbox会自动填充剩余空间，所有组件布局规整，符合预期效果。

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