如何让Python Tkinter脚本中的LabelFrame保持水平对齐？

我正在制作第一个Python GUI，使用Tkinter库。我添加了多个LabelFrame，每个LabelFrame内包含数量不同的Radiobutton，其中一个LabelFrame有3个Radiobutton，导致它与其他LabelFrame不在同一水平线上。我尝试过使用height属性和调整内边距，但没有效果。以下是我的代码：

#!/usr/bin/python3
import tkinter as tk
from tkinter import *
from tkinter import ttk

top = tk.Tk()
top.resizable(True, True)

# General Category
GenInfoLabel = tk.LabelFrame(top,text="General Information", fg="blue")
GenInfoLabel.grid(column=0,row=0, padx=10, pady=5)

# One
One_Frame = tk.LabelFrame(GenInfoLabel,text="One", fg="blue")
One_Frame.grid(column=1, row=1)

def One_Call():
    One_Sel=One_Var.get()
    if      One_Sel == 1: One_ = 1
    elif    One_Sel == 2: One_ = 2

One_Var = tk.IntVar()

rad_One_V1 = tk.Radiobutton(One_Frame, text="1", variable = One_Var, value=1, command=One_Call)
rad_One_V1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

rad_One_V2 = tk.Radiobutton(One_Frame, text="2", variable = One_Var, value=2, command=One_Call)
rad_One_V2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Two
Two_Frame = tk.LabelFrame(GenInfoLabel , text="Two", fg="blue")
Two_Frame.grid(column=2, row=1)

def Two_Call():
    Two_Sel=Two_Var.get()
    if      Two_Sel == 1: Two_ = 1
    elif    Two_Sel == 2: Two_ = 2
Two_Var = tk.IntVar()
rad_Two_1 = tk.Radiobutton(Two_Frame, text="1", variable = Two_Var, value=1, command=Two_Call)
rad_Two_1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

rad_Two_2 = tk.Radiobutton(Two_Frame, text="2", variable = Two_Var, value=2, command=Two_Call)
rad_Two_2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Three
ThreeFrame = tk.LabelFrame(GenInfoLabel, text="Three", fg="blue")
ThreeFrame.grid(column=3, row=1)

def ThreeCall():
    ThreeSel=ThreeVar.get()
    if      ThreeSel == 1: Three = 1
    elif    ThreeSel == 2: Three = 2
ThreeVar = tk.IntVar()

radThree1 = tk.Radiobutton(ThreeFrame, text="Yes", variable = ThreeVar, value=1, command=ThreeCall)
radThree1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radThree2 = tk.Radiobutton(ThreeFrame, text="No", variable = ThreeVar, value=2, command=ThreeCall)
radThree2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Four
FourFrame = tk.LabelFrame(GenInfoLabel, text="Four", fg="blue")
FourFrame.grid(column=4, row=1)

def FourCall():
    FourSel=FourVar.get()
    if      FourSel == 1: Four = 1
    elif    FourSel == 2: Four = 2
FourVar = tk.IntVar()

radFour1 = tk.Radiobutton(FourFrame, text="1", variable = FourVar, value=1, command=FourCall)
radFour1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radFour2 = tk.Radiobutton(FourFrame, text="2", variable = FourVar, value=2, command=FourCall)
radFour2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Five
FiveFrame = tk.LabelFrame(GenInfoLabel, text="Five", fg="blue")
FiveFrame.grid(column=5, row=1)

def FiveCall():
    FiveSel=FiveVar.get()
    if      FiveSel == 1: Five = 1
    elif    FiveSel == 2: Five = 2
    elif    FiveSel == 3: Five = 3
FiveVar = tk.IntVar()

radFive1 = tk.Radiobutton(FiveFrame, text="1", variable = FiveVar, value=1, command=FiveCall)
radFive1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radFive2 = tk.Radiobutton(FiveFrame, text="2", variable = FiveVar, value=2, command=FiveCall)
radFive2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

radFive3 = tk.Radiobutton(FiveFrame, text="3", variable = FiveVar, value=3, command=FiveCall)
radFive3.grid(column=0, row=2, sticky=tk.W, columnspan=3)

# Six
SixFrame = tk.LabelFrame(GenInfoLabel, text="Six", fg="blue")
SixFrame.grid(column=6, row=1)

def SixCall():
    SixSel=SixVar.get()
    if      SixSel == 1: Six = 1
    elif    SixSel == 2: Six = 2
SixVar = tk.IntVar()

radSix1 = tk.Radiobutton(SixFrame, text="1", variable = SixVar, value=1, command=SixCall)
radSix1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radSix2 = tk.Radiobutton(SixFrame, text="2", variable = SixVar, value=2, command=SixCall)
radSix2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

for child in GenInfoLabel.winfo_children():
    child.grid_configure(padx=8)
# Display Form
top.mainloop()

请问如何修改代码使所有LabelFrame保持水平对齐？

要让所有LabelFrame保持水平对齐，核心是统一它们的垂直对齐规则，以下是两种简单有效的实现方式：

方法1：设置grid的sticky参数为顶部对齐 #

在每个LabelFrame的grid调用中添加sticky="n"，强制所有LabelFrame靠顶部对齐，这样即使内部控件数量不同，顶部边缘也会保持在同一水平线：

# 示例：修改单个LabelFrame的grid代码
One_Frame.grid(column=1, row=1, sticky="n")
# 其余所有LabelFrame的grid都添加该参数
Two_Frame.grid(column=2, row=1, sticky="n")
ThreeFrame.grid(column=3, row=1, sticky="n")
FourFrame.grid(column=4, row=1, sticky="n")
FiveFrame.grid(column=5, row=1, sticky="n")
SixFrame.grid(column=6, row=1, sticky="n")

方法2：统一所有LabelFrame的高度（可选） #

如果希望所有LabelFrame高度完全一致，可以先获取最高LabelFrame的高度，再将其他LabelFrame设置为相同高度，同时配合sticky参数让内部控件对齐：

# 先让GUI渲染一次以获取准确高度
top.update_idletasks()
# 获取包含3个单选按钮的LabelFrame高度
target_height = FiveFrame.winfo_height()
# 给其他LabelFrame设置统一高度
One_Frame.config(height=target_height)
Two_Frame.config(height=target_height)
ThreeFrame.config(height=target_height)
FourFrame.config(height=target_height)
SixFrame.config(height=target_height)
# 同时设置sticky让内部控件顶部对齐
One_Frame.grid(column=1, row=1, sticky="n")
# 其余Frame同理

修改后的完整代码 #

以下是添加了sticky="n"参数后的完整运行代码：

#!/usr/bin/python3
import tkinter as tk
from tkinter import *
from tkinter import ttk

top = tk.Tk()
top.resizable(True, True)

# General Category
GenInfoLabel = tk.LabelFrame(top,text="General Information", fg="blue")
GenInfoLabel.grid(column=0,row=0, padx=10, pady=5)

# One
One_Frame = tk.LabelFrame(GenInfoLabel,text="One", fg="blue")
One_Frame.grid(column=1, row=1, sticky="n")

def One_Call():
    One_Sel=One_Var.get()
    if      One_Sel == 1: One_ = 1
    elif    One_Sel == 2: One_ = 2

One_Var = tk.IntVar()

rad_One_V1 = tk.Radiobutton(One_Frame, text="1", variable = One_Var, value=1, command=One_Call)
rad_One_V1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

rad_One_V2 = tk.Radiobutton(One_Frame, text="2", variable = One_Var, value=2, command=One_Call)
rad_One_V2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Two
Two_Frame = tk.LabelFrame(GenInfoLabel , text="Two", fg="blue")
Two_Frame.grid(column=2, row=1, sticky="n")

def Two_Call():
    Two_Sel=Two_Var.get()
    if      Two_Sel == 1: Two_ = 1
    elif    Two_Sel == 2: Two_ = 2
Two_Var = tk.IntVar()
rad_Two_1 = tk.Radiobutton(Two_Frame, text="1", variable = Two_Var, value=1, command=Two_Call)
rad_Two_1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

rad_Two_2 = tk.Radiobutton(Two_Frame, text="2", variable = Two_Var, value=2, command=Two_Call)
rad_Two_2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Three
ThreeFrame = tk.LabelFrame(GenInfoLabel, text="Three", fg="blue")
ThreeFrame.grid(column=3, row=1, sticky="n")

def ThreeCall():
    ThreeSel=ThreeVar.get()
    if      ThreeSel == 1: Three = 1
    elif    ThreeSel == 2: Three = 2
ThreeVar = tk.IntVar()

radThree1 = tk.Radiobutton(ThreeFrame, text="Yes", variable = ThreeVar, value=1, command=ThreeCall)
radThree1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radThree2 = tk.Radiobutton(ThreeFrame, text="No", variable = ThreeVar, value=2, command=ThreeCall)
radThree2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Four
FourFrame = tk.LabelFrame(GenInfoLabel, text="Four", fg="blue")
FourFrame.grid(column=4, row=1, sticky="n")

def FourCall():
    FourSel=FourVar.get()
    if      FourSel == 1: Four = 1
    elif    FourSel == 2: Four = 2
FourVar = tk.IntVar()

radFour1 = tk.Radiobutton(FourFrame, text="1", variable = FourVar, value=1, command=FourCall)
radFour1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radFour2 = tk.Radiobutton(FourFrame, text="2", variable = FourVar, value=2, command=FourCall)
radFour2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

# Five
FiveFrame = tk.LabelFrame(GenInfoLabel, text="Five", fg="blue")
FiveFrame.grid(column=5, row=1, sticky="n")

def FiveCall():
    FiveSel=FiveVar.get()
    if      FiveSel == 1: Five = 1
    elif    FiveSel == 2: Five = 2
    elif    FiveSel == 3: Five = 3
FiveVar = tk.IntVar()

radFive1 = tk.Radiobutton(FiveFrame, text="1", variable = FiveVar, value=1, command=FiveCall)
radFive1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radFive2 = tk.Radiobutton(FiveFrame, text="2", variable = FiveVar, value=2, command=FiveCall)
radFive2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

radFive3 = tk.Radiobutton(FiveFrame, text="3", variable = FiveVar, value=3, command=FiveCall)
radFive3.grid(column=0, row=2, sticky=tk.W, columnspan=3)

# Six
SixFrame = tk.LabelFrame(GenInfoLabel, text="Six", fg="blue")
SixFrame.grid(column=6, row=1, sticky="n")

def SixCall():
    SixSel=SixVar.get()
    if      SixSel == 1: Six = 1
    elif    SixSel == 2: Six = 2
SixVar = tk.IntVar()

radSix1 = tk.Radiobutton(SixFrame, text="1", variable = SixVar, value=1, command=SixCall)
radSix1.grid(column=0, row=0, sticky=tk.W, columnspan=3)

radSix2 = tk.Radiobutton(SixFrame, text="2", variable = SixVar, value=2, command=SixCall)
radSix2.grid(column=0, row=1, sticky=tk.W, columnspan=3)

for child in GenInfoLabel.winfo_children():
    child.grid_configure(padx=8)
# Display Form
top.mainloop()

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