Clear the output buffer in telnetlib on Python 3.2

Question

I want to establish one telnet connection but I don't want to see in the terminal what I write and read. e.g.

tn = telnetlib.Telnet(host)
tn.write(command.encode('ascii') + b"\n")
time.sleep(0.1)
ret = True if b'iconstorage' in self.tn.read_until(b'iconstorage') else False
.
.
.

I don't want to see anything but still receive

    Telnet(host): send b'command\n'
    Telnet(host): recv b'\xff\xfd\x01\xff\xfd\x1f\xff\xfb\x01\xff\xfb\x03\r\r\nls\r\n~ # ls\r\n\x1b[1;34mbin\x1b[0m         '
    Telnet(host): IAC DO 1
    Telnet(host): IAC DO 31
    Telnet(host): IAC WILL 1
    Telnet(host): IAC WILL 3

.
.
.

Is it possible to avoid that? Thanks in advance.

score 1 · Accepted Answer · answered Jun 13 '13 at 19:00

1

You should only be seeing things like that if you've enabled debug mode on that instance of the Telnet class.

Debug mode is off by default, so unless you've changed telnetlib.py, there's no way you can get that output with the code block you posted in the question.

Either way, you can explicitly disable it with...

tn = telnetlib.Telnet()
tn.set_debug_level(0)
tn.open(host)
tn.write(command.encode('ascii') + b"\n")
# etc.

answered Jun 13 '13 at 19:00

Aya

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Hmm.. I think you are right. I will try it out first think in the morning. Thanks a lot! – Cooli Jun 13 '13 at 20:53
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@Cooli, If you like this answer and helped you, please consider checking it as the right answer, that's SO's etiquette :) – securecurve Oct 29 '13 at 00:40

Clear the output buffer in telnetlib on Python 3.2

1 Answers1