如何从 .get() 传输数据，这将导致从 Tkinter 中删除文本行

Question

大家晚上好，请问我的这个关于传输数据以删除文本行的问题的帮助。

Sample.txt consist of:
one
two
three
four
five

这是我的代码：

import tkinter
from tkinter import *
from tkinter import filedialog

root = Tk()
root.title("Delete line")

def remove_line(fileName, lineToSkip):
    with open(fileName, 'r') as read_file:
        lines = read_file.readlines()

    currentLine = 1
    with open(fileName, 'w') as write_file:
        for line in lines:
            if currentLine == lineToSkip:
                pass
            else:
                write_file.write(line)

            currentLine += 1

Numbah = IntVar()
NumbahEntry = Entry(root,textvariable=Numbah,width="30").pack()
sample = remove_line("Sample.txt", Numbah.get())

AcceptButton = Button(root, text="Submit", command=sample,width="30", height="2",bg="lightgreen").pack()

root.mainloop()

remove_line("Sample.txt", 1) #右边数表示 删除哪一行

我正在尝试通过在输入框上输入一个表示要删除的行的数字来生成结果

Answer 1

有几个问题：

• if currentLine == lineToSkip: 应该是 if currentLine <= lineToSkip:
• sample = remove_line("Sample.txt", Numbah.get()) 将立即执行 remove_line(...)。应该是sample = lambda: remove_line("Sample.txt", Numbah.get())

文件的输出可以简化如下：

def remove_line(fileName, lineToSkip):
    with open(fileName, 'r') as read_file:
        lines = read_file.readlines()

    with open(fileName, 'w') as write_file:
        write_file.write(''.join(lines[lineToSkip:]))

---

完整修改代码：

from tkinter import *
from tkinter import filedialog

root = Tk()
root.title("Delete line")

def remove_line(fileName, lineToSkip):
    with open(fileName, 'r') as read_file:
        lines = read_file.readlines()

    with open(fileName, 'w') as write_file:
        write_file.write(''.join(lines[lineToSkip:]))

Numbah = IntVar()
Entry(root,textvariable=Numbah,width="30").pack()

sample = lambda: remove_line("Sample.txt", Numbah.get())

Button(root, text="Submit", command=sample,width="30", height="2",bg="lightgreen").pack()

root.mainloop()