How can I redirect stdout data to a tkinter Text widget?
You need to make a file-like class whose write
method writes to the Tkinter widget instead, and then do sys.stdout = <your new class>
. See this question.
Example (copied from the link):
class IORedirector(object):
'''A general class for redirecting I/O to this Text widget.'''
def __init__(self,text_area):
self.text_area = text_area
class StdoutRedirector(IORedirector):
'''A class for redirecting stdout to this Text widget.'''
def write(self,str):
self.text_area.write(str,False)
and then, in your Tkinter widget:
# To start redirecting stdout:
import sys
sys.stdout = StdoutRedirector( self )
# (where self refers to the widget)
# To stop redirecting stdout:
sys.stdout = sys.__stdout__
This is an old question, but I found a solution which I would like to share with the community. My example pipes a listing of the working directory to a Tk window. I am using Python 3.6 on Windows 8. I ran the code through both Jupyter Notebook and Eclipse using Pydev.
import os
from tkinter import *
from subprocess import Popen, PIPE
root = Tk()
text = Text(root)
text.pack()
def ls_proc():
return Popen(['ls'], stdout=PIPE)
with ls_proc() as p:
if p.stdout:
for line in p.stdout:
text.insert(END, line)
if p.stderr:
for line in p.stderr:
text.insert(END, line)
root.mainloop()
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