AttributeError: 'NoneType' object has no attribute 'send_config_set'

[benc1347]

Hi everyone,
I am new in python and I can't seem to find a way to get around it.

I have writen a python script, to select office number, vlan number, switch IP address (dropdown menu), and port number (dropdown menu)

Then connect to the switch with available details and configure the switch port accordingly.
The program works fine when I was collecting the data from text files, but now that I have converted into menu so there will be no mistake in typing the details, I am not able to figure out why it is not working.

Thanks in advance for your help

The codes is below:

import logging
from tkinter import *
import hvac
import paramiko


# Connect to Vault
vault_addr = "http://192.168.99.19:8200"
vault_token = "hvs.xxxxxxxxxxxxxxxxxxxxx"

client = hvac.Client(url=vault_addr, token=vault_token)

# Retrieve credentials from Vault
secret_path = "passwords"
secret = client.secrets.kv.v2.read_secret_version(path=secret_path)
username = secret['data']['data']['myuser']
password = secret['data']['data']['mypass']

main_window = Tk()
main_window.title('Switch Configuration')
main_window.iconbitmap('C:/soft/1/net.ico')
main_window.geometry("400x300")

main_window.columnconfigure(0, weight=1)
main_window.columnconfigure(1, weight=1)

#now we create check boxes
#first creating Options part
top_label = Label(main_window, text="Switch Configurations")
top_label.grid(column=0, row=2, columnspan=2)

#we create name label here we don't see entry section and only the left side of the frame
office_label = Label(main_window, text="Office No.    ")
office_label.grid(column=0, row=4)
office_field = Entry()
office_field.grid(column=1, row=4)

#we create name label here we don't see entry section and only the left side of the frame
vlan_label = Label(main_window, text="Vlan No.     ")
vlan_label.grid(column=0, row=6)
vlan_field = Entry()
vlan_field.grid(column=1, row=6)


#drop down menu switch List
switch_menu_label= Label(main_window, text="Switch List ")
switch_menu_label.grid(column=0, row=8)

switch_list = ["192.168.99.241", "192.168.99.242", "192.168.99.243", "192.168.99.244",
    "192.168.99.245", "192.168.99.246", "192.168.99.247", "192.168.99.248", "192.168.99.249"]
switch_value = StringVar(main_window)
switch_value.set("Select A Switch: ")

switch_menu = OptionMenu(main_window, switch_value, *switch_list)
switch_menu.grid(column=1, row=8)


#drop down menu
port_menu_label= Label(main_window, text="Switch Port ")
port_menu_label.grid(column=0, row=10)

port_list = ["FastEthernet0/1", "FastEthernet0/2", "FastEthernet0/3", "FastEthernet0/4",
    "FastEthernet0/5", "FastEthernet0/6", "FastEthernet0/7", "FastEthernet0/8", "FastEthernet0/9",
    "FastEthernet0/10", "FastEthernet0/11", "FastEthernet0/12", "FastEthernet0/13", "FastEthernet0/14",
    "FastEthernet0/15", "FastEthernet0/16", "FastEthernet0/17", "FastEthernet0/18", "FastEthernet0/19",
    "FastEthernet0/20", "FastEthernet0/21", "FastEthernet0/22", "FastEthernet0/23", "FastEthernet0/24",
    "FastEthernet0/25", "FastEthernet0/26", "FastEthernet0/27", "FastEthernet0/28", "FastEthernet0/29",
    "FastEthernet0/30", "FastEthernet0/31", "FastEthernet0/32", "FastEthernet0/33", "FastEthernet0/34",
    "FastEthernet0/35", "FastEthernet0/36", "FastEthernet0/37", "FastEthernet0/38", "FastEthernet0/39",
    "FastEthernet0/40", "FastEthernet0/41", "FastEthernet0/42", "FastEthernet0/43", "FastEthernet0/44",
    "FastEthernet0/45", "FastEthernet0/46", "FastEthernet0/47"]
port_value = StringVar(main_window)
port_value.set("Select Switch Port: ")

port_menu = OptionMenu(main_window, port_value, *port_list)
port_menu.grid(column=1, row=10)

desc = office_field.get()
vlan = vlan_field.get()
interface = port_value.get()
switches = switch_value.get()
ssh_client= paramiko.SSHClient()

def get_switch_data():
    def login():
        #connections = []
        
       
        ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        
    try:    

        connection = login()

        #for connection in connections:
        config_commands = [
        f"interface FastEthernet0/{interface}",
        f"switchport access vlan {vlan}",
        f"switchport voice vlan 96",
        f"des {desc}",
        f"switchport mode access",
        f"no switchport trunk encapsulation dot1q",
        f"no switchport trunk native vlan",
        f"no switchport trunk allowed vlan",
        f"no shutdown"
    ]
        output = connection.send_config_set(config_commands)
        print(output)
        print("-"*72)
        output = connection.send_command("wri")
        print(output)
        
    finally:
        ssh_client.close()            


  
#Submit Button
submit_button = Button(main_window, text="Submit Changes", command=get_switch_data)
submit_button.grid(column=0, row=20, columnspan=2)

main_window.mainloop()

### Error Traceback

c:\soft\Test\1.py:23: DeprecationWarning: The raise_on_deleted_version parameter will change its default value to False in hvac v3.0.0. The current default of True will presere previous behavior. 
To use the old behavior with no warning, explicitly set this value to True. See https://github.com/hvac/hvac/pull/907
  secret = client.secrets.kv.v2.read_secret_version(path=secret_path)
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Program Files\Python313\Lib\tkinter\__init__.py", line 2068, in __call__
    return self.func(*args)
           ~~~~~~~~~^^^^^^^
  File "c:\soft\Test\1.py", line 117, in get_switch_data
    output = connection.send_config_set(config_commands)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'send_config_set'

[ktbyers]

Okay, your code doesn't look valid.

Anyways, your error is that connection is not a valid Netmiko object and is instead None and consequently has no method named send_config_set.

[benc1347]

Thanks,
I fixed the issue