def hello():
print('hello there')
from tkinter import *
tk = Tk()
btn = Button(tk, text='click me', command=hello)
btn.pack()
tk.mainloop()
在程序的最后要加tk.mainloop(),调用mainloop方法就可正常显示tkinter窗口
def hello():
print('hello there')
from tkinter import *
tk = Tk()
btn = Button(tk, text='click me', command=hello)
btn.pack()
tk.mainloop()
在程序的最后要加tk.mainloop(),调用mainloop方法就可正常显示tkinter窗口