Tkinter 树视图小部件未正确对齐/在小部件之间添加空间

Question

我正在 tkinter 中处理由一堆 treeveiw 小部件制成的这张桌子。这个想法是得到一个表格，我可以在其中添加行、选择行并进行编辑。在下面的代码中，您可以通过按下按钮将行添加到表格中。我现在想通过配置样式来控制每一行的高度。但是，当我使用样式时，树视图小部件的对齐方式被搞砸了，请参见附图。有什么建议可以解决这个问题吗？

编辑：问题是小部件之间增加了空间。

表格的代码是：

from tkinter import *
from tkinter import ttk


class MyApp(Tk):
    def __init__(self):
        super(MyApp, self).__init__()

        self.geometry('950x500+100+100')
        self.NewTree = []

        label = Label(self,text='Table with some data', font=("Arial Bold", 25))
        label.pack()

        self.addLine()

        master_frame = Frame(self, bd=3, relief=RIDGE)
        master_frame.pack(side=BOTTOM)

        # Create a frame for the canvas and scrollbar(s).
        frame2 = Frame(master_frame)
        frame2.pack(side = BOTTOM)

        # Add a canvas in that frame.
        self.canvas = Canvas(frame2)
        self.canvas.grid(row=0, column=0)

        # Create a vertical scrollbar linked to the canvas.
        vsbar = Scrollbar(frame2, orient=VERTICAL, command=self.canvas.yview)
        vsbar.grid(row=0, column=1, sticky=NS)
        self.canvas.configure(yscrollcommand=vsbar.set)

        # Create a frame on the canvas to contain the buttons.
        self.table_frame = Frame(self.canvas)

        # Create canvas window to hold the buttons_frame.
        self.canvas.create_window((0,0), window=self.table_frame, anchor=NW)

    def addLine(self):
        #Make button for adding step
        bt = Button(self,text='Add Line',command=lambda: self.addLineMethod())
        bt.config(width=9, height=1)
        bt.pack() 


    def addLineMethod(self):


        lineNumber = int(len(self.NewTree)/5)


        for index in range(5):

            s = ttk.Style()
            s.configure('MyStyle.Treeview', rowheight=25)
            self.NewTree.append(ttk.Treeview(self.table_frame, height=1,show="tree",columns=("0"),style='MyStyle.Treeview'))

            #Works fine when using this line instead of those above
            #self.NewTree.append(ttk.Treeview(self.table_frame, height=1,show="tree",columns=("0")))

            self.NewTree[index+5*lineNumber].grid(row=lineNumber, column=index+1)
            self.NewTree[index+5*lineNumber]['show'] = ''

            item = str(index+5*lineNumber)
            self.NewTree[index+5*lineNumber].column("0", width=180, anchor="w")
            self.NewTree[index+5*lineNumber].insert("", "end",item,text=item,values=('"Text text text"'))


        self.table_frame.update_idletasks()  # Needed to make bbox info available.
        bbox = self.canvas.bbox(ALL)  # Get bounding box of canvas with Buttons.

        # Define the scrollable region as entire canvas with only the desired
        # number of rows and columns displayed.
        self.canvas.configure(scrollregion=bbox, width=925, height=200)


app = MyApp()
app.mainloop()

她是一张桌子的图片，上面有一些线条。

Answer 1

将样式配置放在__init__()函数中，效果就消失了。我不清楚为什么会这样。

def __init__(self):
...
    s = ttk.Style()
    s.configure('MyStyle.Treeview', rowheight=20)