我相信您不应该在其他线程上执行主循环。AFAIK，主循环应在创建窗口小部件的同一线程上执行。
我熟悉的GUI工具包（Tkinter，.NET Windows窗体）就是这种方式：您只能从一个线程操作GUI。
在Linux上，您的代码引发异常：
self.tk.mainloop（n）
RuntimeError：从其他位置调用Tcl
以下之一将起作用（没有额外的线程）：
if __name__ == '__main__':
t = tk.Tk()
t.iconbitmap('icon.ico')
b = tk.Button(text='test', command=exit)
b.grid(row=0)
t.mainloop()
带有额外的线程：
def threadmain():
t = tk.Tk()
t.iconbitmap('icon.ico')
b = tk.Button(text='test', command=exit)
b.grid(row=0)
t.mainloop()
if __name__ == '__main__':
thread.start_new_thread(threadmain, ())
while 1:
sleep(1)
如果需要从tkinter线程外部与tkinter进行通信，建议您设置一个计时器来检查工作队列。
这是一个例子：
import Tkinter as tk
import thread
from time import sleep
import Queue
request_queue = Queue.Queue()
result_queue = Queue.Queue()
def submit_to_tkinter(callable, *args, **kwargs):
request_queue.put((callable, args, kwargs))
return result_queue.get()
t = None
def threadmain():
global t
def timertick():
try:
callable, args, kwargs = request_queue.get_Nowait()
except Queue.Empty:
pass
else:
print "something in queue"
retval = callable(*args, **kwargs)
result_queue.put(retval)
t.after(500, timertick)
t = tk.Tk()
t.configure(width=640, height=480)
b = tk.Button(text='test', name='button', command=exit)
b.place(x=0, y=0)
timertick()
t.mainloop()
def foo():
t.title("Hello world")
def bar(button_text):
t.children["button"].configure(text=button_text)
def get_button_text():
return t.children["button"]["text"]
if __name__ == '__main__':
thread.start_new_thread(threadmain, ())
trigger = 0
while 1:
trigger += 1
if trigger == 3:
submit_to_tkinter(foo)
if trigger == 5:
submit_to_tkinter(bar, "changed")
if trigger == 7:
print submit_to_tkinter(get_button_text)
sleep(1)
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