Python完成后不退出函数

def recursive_function(n):
    if n > 0:
        print(n)
        recursive_function(n-1)
    else:
        print("Done")

recursive_function(5)
print("After function call")

5
4
3
2
1
Done
After function call

def callback_function():
    print("Callback function called")

def main_function(callback):
    print("Main function")
    callback()

main_function(callback_function)
print("After function call")

Main function
Callback function called
After function call

import threading

def thread_function():
    print("Thread function")

def main_function():
    print("Main function")

thread = threading.Thread(target=thread_function)
thread.start()

main_function()
print("After function call")

Thread function
Main function
After function call

import tkinter as tk

def button_click():
    print("Button clicked")

def main_function():
    print("Main function")

root = tk.Tk()
button = tk.Button(root, text="Click me", command=button_click)
button.pack()

main_function()

root.mainloop()
print("After function call")

Main function
Button clicked
After function call