How can you disable the output of socketserver in Python?

Question

I have socketserver set up to run some unittests, and it's outputting its log to the console.

Is there a way to disable this?

Here's roughly the code I'm running:

class TestServer(SocketServer.TCPServer):
    allow_reuse_address = True


class ScraperExampleTest(unittest.TestCase):
    def setUp(self):
        # Due to requests not supporting the 'file' scheme, we are forced to run
        # our own server. See: https://github.com/kennethreitz/requests/issues/847
        Handler = SimpleHTTPServer.SimpleHTTPRequestHandler
        httpd = TestServer(('', PORT), Handler)
        httpd_thread = threading.Thread(target=httpd.serve_forever)
        httpd_thread.setDaemon(True)
        httpd_thread.start()

jamt · Accepted Answer · 2014-08-14 15:09:45Z

13

The printout doesn't originate from the TCPServer but from the SimpleHTTPRequestHandler, or more precisely it's parent: BaseHTTPRequestHandler. You can change the behaviour by creating your own handler and overloading:

def log_message(self, format, *args)

Something like this should work:

class TestServer(SocketServer.TCPServer):
    allow_reuse_address = True 
    logging = False

class MyHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    def log_message(self, format, *args):
        if self.server.logging:
            SimpleHTTPServer.SimpleHTTPRequestHandler.log_message(self, format, *args)

answered Aug 14, 2014 at 15:09

jamt

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1 Comment

omikron Over a year ago

Thsi should be accepted answer. Not only simply works but do it properly, without hacks.

mjv · Accepted Answer · 2013-05-11 21:23:11Z

1

A common trick to avoid console output in Python is to redirect it. sys.stdout can be replaced by any open [for writing] text file.

import sys
f = open("myLog.txt", "w")
sto = sys.stdout
sys.stdout = f
#...

#... when done with tests

# restablish the orignal console output
sys.stdout = sto
fclose(f)

answered May 11, 2013 at 21:23

mjv

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3 Comments

mlissner Over a year ago

I don't love this, but I tried it out by adding sys.stdout = open('/dev/null', 'w') to the setUp method. Didn't change the output at all.

mjv Over a year ago

Could it be that the output sent to the console effectively comes from writes to stderr rather than stdout? Try redirecting stderr as well.

mlissner Over a year ago

Redirecting stderr works, but it's so much of a hack that I can't endorse it. If the tests fail, I'll get no output. That's worse than too much output during success.

user2589273 · Accepted Answer · 2025-04-28 16:47:18Z

0

Not the neatest solution but you can also override the function in the main library:

import http.server

if not debug:                               

    http.server.SimpleHTTPRequestHandler.log_message = lambda *args: None

answered Apr 28 at 16:47

user2589273

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