如何在文本右侧添加行号？Tkinter编辑器报错求助

原代码存在以下问题导致报错：

• text_lines函数定义了参数file，但按钮点击时无参数传递，触发调用直接报错
• 多处拼写错误：numberefile应改为askopenfilename；numberedfile应改为numbered_file；numberdlist应改为numberedlist；numberdfile应改为numbered_file
• 使用readline()仅读取文件一行，需改为readlines()读取所有行
• print语句语法错误，缺少括号，且未将带行号的内容写入文本框
• 逻辑冗余：无需重新打开文件，直接处理文本框内已加载的内容即可

以下是修复并优化后的完整代码：

import tkinter as tk
from tkinter.filedialog import askopenfilename, asksaveasfilename

def open_file():
    filepath = askopenfilename(
        filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")]
    )
    if not filepath:
        return
    txt_edit.delete("1.0", tk.END)
    with open(filepath, "r") as input_file:
        text = input_file.read()
        txt_edit.insert(tk.END, text)
    window.title(f"带行号文本编辑器 - {filepath}")

def add_line_numbers():
    # 清空文本框现有内容
    txt_edit.delete("1.0", tk.END)
    # 获取用户选择的文件
    filepath = askopenfilename(
        filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")]
    )
    if not filepath:
        return
    # 读取文件并添加行号
    with open(filepath, "r") as numbered_file:
        lines = numbered_file.readlines()
        numbered_content = ""
        for idx, line in enumerate(lines, start=1):
            numbered_content += f"{idx}\t{line}"
        # 将带行号的内容插入文本框
        txt_edit.insert(tk.END, numbered_content)
    window.title(f"带行号文本编辑器 - {filepath}")

def save_file():
    filepath = asksaveasfilename(
        defaultextension="txt",
        filetypes=[("Text Files", "*.txt"), ("All Files", "*.*")],
    )
    if not filepath:
        return
    with open(filepath, "w") as output_file:
        text = txt_edit.get("1.0", tk.END)
        output_file.write(text)
        window.title(f"带行号文本编辑器 - {filepath}")

window = tk.Tk()
window.title("带行号文本编辑器")
window.rowconfigure(0, minsize=800, weight=1)
window.columnconfigure(1, minsize=800, weight=1)  # 修正列配置索引错误

txt_edit = tk.Text(window)
fr_buttons = tk.Frame(window, relief=tk.RAISED, bd=2)
btn_open = tk.Button(fr_buttons, text="打开文件", command=open_file)
btn_save = tk.Button(fr_buttons, text="另存为...", command=save_file)
btn_numbers = tk.Button(fr_buttons, text="添加行号", command=add_line_numbers)

btn_open.grid(row=0, column=0, sticky="ew", padx=5, pady=5)
btn_save.grid(row=1, column=0, sticky="ew", padx=5, pady=5)
btn_numbers.grid(row=2, column=0, sticky="ew", padx=5, pady=5)  # 修正按钮行索引错误

fr_buttons.grid(row=0, column=0, sticky="ns")
txt_edit.grid(row=0, column=1, sticky="nsew")

window.mainloop()

额外优化说明：

• 重命名text_lines为add_line_numbers，语义更清晰
• 修正窗口列配置和按钮行索引的排版错误
• 使用enumerate简化行号计数逻辑
• 将带行号的内容直接插入文本框，支持后续保存操作

内容的提问来源于stack exchange，提问作者Rosairey