Python Tkinter在运行后运行命令

from tkinter import *

def run_command():
    # 执行命令的代码
    pass

root = Tk()
button = Button(root, text="运行命令", command=run_command)
button.pack()
root.mainloop()

from tkinter import *

def run_command():
    # 执行命令的代码
    pass

root = Tk()
menubar = Menu(root)
file_menu = Menu(menubar, tearoff=0)
file_menu.add_command(label="运行命令", command=run_command)
menubar.add_cascade(label="文件", menu=file_menu)
root.config(menu=menubar)
root.mainloop()

from tkinter import *

def run_command(event):
    # 执行命令的代码
    pass

root = Tk()
entry = Entry(root)
entry.bind("<Return>", run_command)
entry.pack()
root.mainloop()