仍然可以使用队列而不必摆脱所有print语句。您可以使用Process从属stdout重定向来执行此操作。下面的解决方案使用Queue子类来模仿stdout。然后，该线程由一个线程监视，该线程寻找被泵送到文本小部件中的新文本。
import sys
import time
from multiprocessing import Process
from multiprocessing.queues import Queue
from threading import Thread
from Tkinter import *
# This function takes the text widget and a queue as inputs.
# It functions by waiting on new data entering the queue, when it
# finds new data it will insert it into the text widget
def text_catcher(text_widget,queue):
while True:
text_widget.insert(END, queue.get())
# This is a Queue that behaves like stdout
class StdoutQueue(Queue):
def __init__(self,*args,**kwargs):
Queue.__init__(self,*args,**kwargs)
def write(self,msg):
self.put(msg)
def flush(self):
sys.__stdout__.flush()
def test_child(q):
# This line only redirects stdout inside the current process
sys.stdout = q
# or sys.stdout = sys.__stdout__ if you want to print the child to the terminal
print 'child running'
def test_parent(q):
# Again this only redirects inside the current (main) process
# commenting this like out will cause only the child to write to the widget
sys.stdout = q
print 'parent running'
time.sleep(0.5)
Process(target=test_child,args=(q,)).start()
if __name__ == '__main__':
gui_root = Tk()
gui_txt = Text(gui_root)
gui_txt.pack()
q = StdoutQueue()
gui_btn = Button(gui_root, text='Test', command=lambda:test_parent(q),)
gui_btn.pack()
# Instantiate and start the text monitor
monitor = Thread(target=text_catcher,args=(gui_txt,q))
monitor.daemon = True
monitor.start()
gui_root.mainloop()
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