python的tkinter的选择文件并显示在CTkEntry

import customtkinter as ctk
from tkinter import filedialog


class MySelectFileFrameGui:
    def __init__(self, main_frame: ctk.CTkFrame):
        # 定义返回的文件路径
        self.file_path = None

        # 定义主窗口
        self.main_frame = main_frame

        # 定义部件主窗口
        self.select_file_main_frame = ctk.CTkFrame(
            master=self.main_frame,
            corner_radius=0,
        )
        self.select_file_main_frame.grid(row=0, column=0, sticky="nsew")
        self.select_file_main_frame.grid_columnconfigure(index=0, weight=1)

        # 定义选择文件路径展示对话框
        self.file_path_entry = ctk.CTkEntry(
            master=self.select_file_main_frame,
            placeholder_text="文件路径",
            state="disabled",
        )
        self.file_path_entry.grid(row=0, column=0, padx=(20, 10), pady=(20, 20), sticky="nsew")

        # 定义选择文件按钮
        self.select_file_button = ctk.CTkButton(
            master=self.select_file_main_frame,
            height=40,
            text="选择文件",
            command=self.set_select_file_button_event,
        )
        self.select_file_button.grid(row=0, column=1, padx=(10, 20), pady=(20, 20), sticky="nsew")

    # 选择文件按钮事件
    def set_select_file_button_event(self):
        file_path = filedialog.askopenfilename(
            title="Select a File",
            filetypes=(("Excel files", "*.xls"), ("Excel files", "*.xlsx"))
        )
        if file_path:
            self.file_path_entry.configure(state="normal")  # 先设置为正常状态以便更新文本
            self.file_path_entry.delete(0, ctk.END)  # 删除现有文本
            self.file_path_entry.insert(0, file_path)  # 插入新文本
            self.file_path_entry.configure(state="disabled")  # 设置为不可编辑状态

    # 返回选择文件面板
    def set_select_file_main_panel(self):
        return self.select_file_main_frame

    # 返回文件路径
    def get_excel_file_path(self):
        return self.file_path_entry.get()


# # 创建主窗口
# root = ctk.CTk()
# root.title("File Selector")
# root.geometry(f"{1100}x{580}")
# root.grid_columnconfigure(0, weight=1)
#
# mfpg = MySelectFileFrameGui(main_frame=root)
# mfpg.set_select_file_main_panel()
#
# # 运行主循环
# root.mainloop()