python paramiko error “AttributeError: 'NoneType' object has no attribute 'open_session'”


python paramiko error “AttributeError: 'NoneType' object has no attribute 'open_session'”



I'm trying python paramiko module, got below error. How can I solve this? (I searched a lot, but no lucky)
Any replies will be appreciated. (On Mac OS)



python2.7 aaa.py


Traceback (most recent call last):
File "aaa.py", line 24, in <module>
ssh_command('172.16.129.130', 22, 'user', 'password', 'ls')
File "aaa.py", line 14, in ssh_command
stdin,stdout,stderr = client.exec_command(command)
File "/Users/usera/anaconda2/lib/python2.7/site- packages/paramiko/client.py", line 480, in exec_command
chan = self._transport.open_session(timeout=timeout)
AttributeError: 'NoneType' object has no attribute 'open_session'



Python version


Python 2.7.14 |Anaconda, Inc.| (default, Dec 7 2017, 11:07:58)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.



Python code


cat aaa.py
#-*- coding:utf-8 -*-

import paramiko

#def ssh_command(ip, port, username, password, command='pwd; ls'):
def ssh_command(ip, port, username, password, command):

paramiko.util.log_to_file("filename.log")

client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect = (ip, port, username, password)
#stdin, stdout, stderr = client.exec_command(command)
stdin,stdout,stderr = client.exec_command(command)
#input = stdin.read()
output = stdout.read()
#output_error = stderr.read()

print ouput.decode('utf-8')

# Close the connect
client.close()

ssh_command('172.16.129.130', 22, 'user', 'password', 'ls')




1 Answer
1



The problem is my typo.
"client.connect = (ip, port, username, password)" should be "client.connect(ip, port, username, password)"






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