在tkinter中删除组合框边框或箭头

import tkinter as tk
from tkinter import ttk

root = tk.Tk()

combo = ttk.Combobox(root)

style = ttk.Style()
style.theme_use('default')  # 使用默认主题

# 删除边框
style.configure('TCombobox', borderwidth=0)

# 删除箭头
style.map('TCombobox', fieldbackground=[('readonly', 'white')])

combo['style'] = 'TCombobox'

import tkinter as tk
from tkinter import ttk

root = tk.Tk()

combo = ttk.Combobox(root)

style = ttk.Style()
style.theme_use('default')
style.configure('TCombobox', borderwidth=0)
style.map('TCombobox', fieldbackground=[('readonly', 'white')])

combo['style'] = 'TCombobox'

combo.pack()

root.mainloop()