Netmiko: Traceback Errors

[Bizzy211]

I'm learning this, unsure of what the problem is. Please assist. Thank you.

import getpass
import sys
import threading
import socket
from multiprocessing import Queue
from netmiko import ConnectHandler
from netmiko.ssh_exception import NetMikoAuthenticationException
# import time
from netmiko.ssh_exception import NetMikoTimeoutException
from paramiko.ssh_exception import SSHException

routers = [open('18_routers')]
ssh_username = input('Enter Username: ')
ssh_password = getpass.getpass('Enter Your Password: ')

# Define Switches IPs
# routers = []

with open('18_routers') as f:
    for line in f:
        line = line.strip()
        try:
            socket.inet_aton(line)
            routers.append(line)
        except socket.error:
            print("Invalid IP address  " + line)


def ssh_session(router, threads):
    threads_dict = {}
#    for IP in IP_LIST:
    router = {
        'device_type': 'cisco_ios',
        'ip': router,
        'username': ssh_username,
        'password': ssh_password,
    }

    try:
        net_connect = ConnectHandler(**router)
    except NetMikoTimeoutException:
        print('Device not reachable')
        pass

    except NetMikoAuthenticationException:
        print('Authentication Failure')
        pass

    except SSHException:
        print('Make sure Username & Password is Correct or SSH is enabled \n')
        pass

    else:

        # Configure Router based on configuration file
        output = net_connect.send_config_from_file(config_file='18_router_config')
        threads.put(threads_dict)
        print(output)

        # Save Router Configuration
        print('\n Saving the Router configuration \n')
        output = net_connect.save_config()
        threads.put(threads_dict)
        print(output)
        #   time.sleep(1)

        # Show Hostname using the Show Run command and Include variable
        output1 = net_connect.send_command('show run | inc hostname').replace('hostname', '')
        threads.put(threads_dict)
        print(output1)
        #   time.sleep(1)

        # Show IP Interface Brief
        output2 = net_connect.send_command('show run')
        orig_stdout = sys.stdout
        sys.stdout = open((output1.replace("\n", '')) + "_config" + ".txt", "w+")
        threads.put(threads_dict)
        #    time.sleep(1)

        # Print Hostname and IP Interface Brief to be saved to File
        print(output1, "\r", output2)
        sys.stdout.close()
        sys.stdout = orig_stdout
        threads.put(threads_dict)
        print('\n Looks Like You Are Done, I Am Now Closing The Connection \n')


if __name__ == "__main__":

    threads = Queue()

    for router in routers:
        th = threading.Thread(target=ssh_session, args=(router, threads))
        #        threads.append(th)

        #    for th in threads:
        th.start()

        #    for th in threads:
#        th.join()

    # Wait for all threads to complete
    main_thread = threading.currentThread()
    for some_thread in threading.enumerate():
        if some_thread != main_thread:
            some_thread.join()

    # Retrieve everything off the queue - k is the router IP, v is output
    # You could also write this to a file, or create a file for each router

#    while not threads.empty():
#        my_dict = threads.get()
#        for k, val in my_dict():
#            print(k)
#            print(val)
#        my_dict.join()

Error Message:

Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Program Files\Python39\lib\threading.py", line 950, in _bootstrap_inner
self.run()
File "C:\Program Files\Python39\lib\threading.py", line 888, in run
self._target(self._args, self._kwargs)
File "C:\Users\nicholas\Google Drive\pynet-script\netmiko_cisco\netmikocisco_mulit-thread", line 40, in ssh_session
net_connect = ConnectHandler(router)
File "C:\Users\nicholas\PycharmProjects\NetworkAutomation_Scripts\venv\lib\site-packages\netmiko\ssh_dispatcher.py", line 312, in ConnectHandler
return ConnectionClass(args, *kwargs)
File "C:\Users\nicholas\PycharmProjects\NetworkAutomation_Scripts\venv\lib\site-packages\netmiko\cisco\cisco_ios.py", line 17, in __init__
return super().__init__(args, **kwargs)
File "C:\Users\nicholas\PycharmProjects\NetworkAutomation_Scripts\venv\lib\site-packages\netmiko\base_connection.py", line 236, in __init__
self.host = ip.strip()
AttributeError: '_io.TextIOWrapper' object has no attribute 'strip'
configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#terminal length 0
^
% Invalid input detected at '^' marker.

R1(config)#interface lo21
R1(config-if)#ip add 2.2.2.2 255.255.255.255
R1(config-if)#no shut
R1(config-if)#end
R1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#terminal length 0
^
% Invalid input detected at '^' marker.

R3(config)#interface lo21
R3(config-if)#ip add 2.2.2.2 255.255.255.255
R3(config-if)#no shut
R3(config-if)#end
R3#

Saving the Router configuration

Saving the Router configuration

configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R4(config)#terminal length 0
^
% Invalid input detected at '^' marker.

R4(config)#interface lo21
R4(config-if)#ip add 2.2.2.2 255.255.255.255
R4(config-if)#no shut
R4(config-if)#end
R4#

Saving the Router configuration

configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#terminal length 0
^
% Invalid input detected at '^' marker.

R2(config)#interface lo21
R2(config-if)#ip add 2.2.2.2 255.255.255.255
R2(config-if)#no shut
R2(config-if)#end
R2#

Saving the Router configuration

configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R5(config)#terminal length 0
^
% Invalid input detected at '^' marker.

R5(config)#interface lo21
R5(config-if)#ip add 2.2.2.2 255.255.255.255
R5(config-if)#no shut
R5(config-if)#end
R5#

Saving the Router configuration

write mem
Building configuration...
[OK]
R4#
write mem

Building configuration...
[OK]
R3#
write mem
Building configuration...
[OK]
R2#
write mem
Building configuration...
[OK]
R1#
write mem
Building configuration...
[OK]
R5#

R4 R3

R2
R5

R1

Looks Like You Are Done, I Am Now Closing The Connection

Looks Like You Are Done, I Am Now Closing The Connection

Looks Like You Are Done, I Am Now Closing The Connection

Looks Like You Are Done, I Am Now Closing The Connection

Looks Like You Are Done, I Am Now Closing The Connection

Process finished with exit code 0

[ktbyers]

You are setting the "routers" variable to include an open filehandle:

routers = [open('18_routers')]

And then you are later trying to use that list that contains that file handle reference.

self.host = ip.strip()
AttributeError: '_io.TextIOWrapper' object has no attribute 'strip'

[Bizzy211]

You are setting the "routers" variable to include an open filehandle:

routers = [open('18_routers')]

And then you are later trying to use that list that contains that file handle reference.

self.host = ip.strip()
AttributeError: '_io.TextIOWrapper' object has no attribute 'strip'

Any suggestions on how to apply the fix? I see what you are saying, but I'm lost on the exact solution. Thanks by the way for the quick response.

[ktbyers]

Replace:

routers = [open('18_routers')]

with

routers = []

[Bizzy211]

Replace:

routers = [open('18_routers')]

with

routers = []

Amazing! That worked. Thanks for coming to the rescue!!