能用Python 写出一个比较完整参考代码吗？

当然可以，下面是一个简单的参考代码，仅供参考：

import tkinter as tk
from tkinter import filedialog
import re
import openpyxl
import datetime
import pickle

# 创建GUI界面
class Application(tk.Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self.master = master
        self.pack()
        self.create_widgets()
        self.records = []

    # 创建组件
    def create_widgets(self):
        self.file_label = tk.Label(self, text="选择txt文件：")
        self.file_label.pack()

        self.file_button = tk.Button(self, text="选择文件", command=self.choose_file)
        self.file_button.pack()

        self.listbox = tk.Listbox(self)
        self.listbox.pack()

        self.show_button = tk.Button(self, text="查看记录", command=self.show_record)
        self.show_button.pack()

    # 选择txt文件
    def choose_file(self):
        file_path = filedialog.askopenfilename()
        if file_path:
            data = self.extract_data(file_path)
            if data:
                self.save_record(data)

    # 抽取数据
    def extract_data(self, file_path):
        with open(file_path, 'r') as f:
            content = f.read()
            pattern = re.compile(r'(\d+\.\d+)\s+(\d+\.\d+)\s+(\d+\.\d+)')
            match = pattern.search(content)
            if match:
                data = match.groups()
                return data

    # 保存记录
    def save_record(self, data):
        now = datetime.datetime.now()
        date_str = now.strftime("%Y-%m-%d %H:%M:%S")
        record = {'time': date_str, 'data': data}
        self.records.append(record)
        self.listbox.insert(tk.END, date_str)

        # 将记录保存到文件
        with open('records.pkl', 'wb') as f:
            pickle.dump(self.records, f)

    # 显示记录
    def show_record(self):
        selection = self.listbox.curselection()
        if selection:
            index = selection[0]
            record = self.records[index]
            data = record['data']
            tk.messagebox.showinfo('记录详情', f'排量: {data[0]}, 功率: {data[1]}, 扭矩: {data[2]}')

# 读取历史记录
def load_records():
    try:
        with open('records.pkl', 'rb') as f:
            records = pickle.load(f)
            return records
    except:
        return []

# 启动程序
def main():
    root = tk.Tk()
    app = Application(master=root)
    app.records = load_records()
    for record in app.records:
        app.listbox.insert(tk.END, record['time'])
    app.mainloop()

if __name__ == "__main__":
    main()

这个程序实现了选择txt文件、抽取数据、保存记录、显示历史记录等功能，并将记录保存到了文件中。你可以根据自己的实际需求进行修改和完善。