1. 导入PIL库：在代码文件开头处添加以下代码：

from PIL import Image, ImageTk

2. 加载背景图片：在Ok_Window类的__init__方法中添加以下代码：

加载背景图片

    img = Image.open("abc.jpg")
    img = img.resize((500, 400), Image.ANTIALIAS)
    self.photo = ImageTk.PhotoImage(img)
    bg_label = tk.Label(self.master, image=self.photo)
    bg_label.place(x=0, y=0, relwidth=1, relheight=1)

3. 完整代码：

import tkinter as tk from tkinter import filedialog, messagebox, ttk import pandas as pd from PIL import Image, ImageTk

class Ok_Window: def init(self,master): self.columns = None self.df = None

    # 创建主窗口
    self.master = tk.Tk()
    self.master.title("数据预处理")
    self.master.geometry("500x400")

    # 加载背景图片
    img = Image.open("abc.jpg")
    img = img.resize((500, 400), Image.ANTIALIAS)
    self.photo = ImageTk.PhotoImage(img)
    bg_label = tk.Label(self.master, image=self.photo)
    bg_label.place(x=0, y=0, relwidth=1, relheight=1)

    # 设置标题
    label_title = tk.Label(self.master, text="数据预处理", font=("Arial", 16), pady=30)
    label_title.grid(row=0, column=1, columnspan=3)

    # 设置打开文件按钮
    button_open = tk.Button(self.master, text="打开文件", command=self.open_file)
    button_open.grid(row=1, column=0)

    # 设置处理空值按钮
    button_fillna = tk.Button(self.master, text="处理空值", state="disabled", command=self.fill_na)
    button_fillna.grid(row=1, column=1)

    # 设置去重按钮
    button_drop_duplicates = tk.Button(self.master, text="去重", state="disabled", command=self.drop_duplicates)
    button_drop_duplicates.grid(row=1, column=2)

    # 设置处理异常值按钮
    button_handle_outliers = tk.Button(self.master, text="处理异常值", state="disabled", command=self.handle_outliers)
    button_handle_outliers.grid(row=1, column=3)

    # 设置输出缺失值数目的按钮
    button_missing_value = tk.Button(self.master, text="缺失值数量", state="disabled", command=self.missing_value_count)
    button_missing_value.grid(row=1, column=4)

    # 设置保存文件按钮
    button_save = tk.Button(self.master, text="保存文件", state="disabled", command=self.save_file)
    button_save.grid(row=5, column=0)

    # 设置退出按钮
    button_exit = tk.Button(self.master, text="退出", command=self.master.destroy)
    button_exit.grid(row=5, column=4)

    # 设置treeview组件
    self.tree = ttk.Treeview(self.master, columns=("index", "data"))
    self.tree.heading("#0", text="序号")
    self.tree.heading("index", text="索引")
    self.tree.heading("data", text="数据")
    self.tree.column("#0", width=50, anchor="center")
    self.tree.column("index", width=100, anchor="center")
    self.tree.column("data", width=300, anchor="w")
    self.tree.grid(row=2, column=0, columnspan=5, padx=1, pady=1)

# 打开文件
def open_file(self):
    file_path = filedialog.askopenfilename(defaultextension=".csv",
                                           filetypes=(("CSV files", "*.csv"), ("All Files", "*.*")))
    if file_path:
        try:
            self.df = pd.read_csv(file_path)
            self.columns = list(self.df.columns)
            messagebox.showinfo("提示", "数据已导入成功！", parent=self.master)
            self.enable_buttons()

            # 显示前10行数据
            for i in range(min(len(self.df), 10)):
                index = str(i + 1)
                self.tree.insert("", "end", text=index, values=(self.df.index[i], ", ".join(str(x) for x in self.df.iloc[i].values)))
        except Exception as e:
            messagebox.showerror("错误", "打开文件失败！{}".format(e), parent=self.master)

# 处理空值
def fill_na(self):
    self.df.fillna(method="ffill", inplace=True)
    messagebox.showinfo("提示", "空值已填充成功！", parent=self.master)

# 去重
def drop_duplicates(self):
    self.df.drop_duplicates(inplace=True)
    messagebox.showinfo("提示", "重复行已去除成功！", parent=self.master)

处理异常值

def handle_outliers(self):
# 处理 Mileage
    if "Mileage" in self.df.columns:
        mileage_unit = "km/l"
        if mileage_unit == "mile/l":
            self.df["Mileage"] = self.df["Mileage"].apply(lambda x: 1 / x)
        elif mileage_unit == "km/kg":
            self.df["Mileage"] = self.df["Mileage"].apply(lambda x: x * 0.425)

# 处理 Engine
    if "Engine" in self.df.columns:
        engine_unit = "CC"
        if engine_unit == "L":
            self.df["Engine"] = self.df["Engine"] / 1000

# 处理 Power
    if "Power" in self.df.columns:
        power_unit = "bhp"
        if power_unit == "kW":
            self.df["Power"] = self.df["Power"] * 0.7457

# 处理 Kilometers_Driven
    if "Kilometers_Driven" in self.df.columns:
        q1 = self.df["Kilometers_Driven"].quantile(0.25)  # 计算四分位数 Q1
        q3 = self.df["Kilometers_Driven"].quantile(0.75)  # 计算四分位数 Q3
        iqr = q3 - q1  # 计算四分位距 IQR
        threshold = q3 + 1.5 * iqr  # 计算阈值

    # 找出超过阈值的数据行
        outlier_rows = self.df[self.df["Kilometers_Driven"] > threshold].index

    # 删除异常值数据行
        self.df.drop(outlier_rows, inplace=True)

        messagebox.showinfo("提示", "异常值已处理成功！", parent=self.master) 




# 计算缺失值数量
def missing_value_count(self):
    missing_values = self.df.isnull().sum().sum()
    messagebox.showinfo("提示", "缺失值数量为{}".format(missing_values), parent=self.master)

# 保存文件
def save_file(self):
    file_path = filedialog.asksaveasfilename(defaultextension=".csv",
                                             filetypes=(("CSV files", "*.csv"), ("All Files", "*.*")))
    if file_path:
        try:
            self.df.to_csv(file_path, index=False)
            messagebox.showinfo("提示", "数据已保存成功！", parent=self.master)
        except Exception as e:
            messagebox.showerror("错误", "保存文件失败！{}".format(e), parent=self.master)

# 启用处理空值、去重、处理异常值、数据标准化和保存按钮
def enable_buttons(self):
    self.master.children["!button2"].config(state="normal")
    self.master.children["!button3"].config(state="normal")
    self.master.children["!button4"].config(state="normal")
    self.master.children["!button5"].config(state="normal")
    self.master.children["!button6"].config(state="normal")
    self.master.children["!button7"].config(state="normal")

创建应用程序窗口

root = tk.Tk() app = Ok_Window(root) root.mainloop(