How to remove bad characters from the stdout in paramiko [duplicate]

Question

I'm using following script to run some commands in a shell. The basic scenario is, I've one server application, to which I can connect through remote shell using ssh command. I'm mimicking this using paramiko, but the problem is whe I run the following script -

import sys #sys.stderr = open('/dev/null') # Silence silly warnings from paramiko import paramiko as pm from paramiko import AutoAddPolicy sys.stderr = sys.__stderr__ import os class AllowAllKeys(pm.MissingHostKeyPolicy): def missing_host_key(self, client, hostname, key): return HOST = 'localhost' USER = 'admin' PASSWORD = 'admin' client = pm.SSHClient() #client.load_system_host_keys() #client.load_host_keys(str(pm.AutoAddPolicy())) client.set_missing_host_key_policy(pm.AutoAddPolicy()) client.connect(HOST, username=USER, password=PASSWORD, port=2222) channel = client.invoke_shell() stdin = channel.makefile('wb') stdout = channel.makefile('rb') stdin.write(''' cd /Realms exit ''') for line in stdout: print line.strip('\n') stdout.close() stdin.close() client.close()

The execution of this shows lot of bad characters as follows -

←[39m←[1madmin←[0m@pjajoo-t420:/> ←[39m←[1madmin←[0m@pjajoo-t420:/> cd /Realms ←[39m←[1madmin←[0m@pjajoo-t420:/Realms> exit

Can anybody help me strip these bad characters, so that it will helpful for my debugging and answer verification purposes?

Note: I'm using Windows 7.

they are not bad characters, they are pretty characters... :) — Kent
– Kent, Commented Apr 25, 2014 at 11:14
you can try to look for info on paramiko, check how to disable ansi escapes. I don't have windows to test, and didn't work with paramiko either. — Kent
– Kent, Commented Apr 25, 2014 at 11:25
Why do you from paramiko import AutoAddPolicy when you have already done import paramiko as pm and all further references use pm.AutoAddPolicy anyway? — twalberg
– twalberg, Commented Apr 25, 2014 at 16:36

Community · Accepted Answer · 2017-05-23 12:11:13Z

Answer can be found at - How can I remove the ANSI escape sequences from a string in python

I've used following lines of code for the above code and it worked for me -

import re for line in stdout: print (re.compile(r'\x1b[^m]*m')).sub('', line)

It removed all the bad characters.

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