Vlan changes to several devices in the same script call not possible

[f4mf4t4l]

I try to configure a vlan on multiple devices. When doing this within one script i get an exception on the second device. The vlan was set though.

Script:

import urllib3

from pyaoscx.session import Session 
from pyaoscx.vlan import Vlan 

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

vlan_id = "16"

s1 = Session("switch1", "10.04")
s1.open("user", "password")

vlan1 = Vlan(s1, vlan_id)
vlan1.apply()

s1.close()

s2 = Session("switch2", "10.04")
s2.open("user", "password")

vlan2 = Vlan(s2, vlan_id)
vlan2.apply()

s2.close()

Exception:

Traceback (most recent call last):
  File "./test1.py", line 26, in <module>
    vlan2.apply()
    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/pyaoscx_module.py", line 40, in ensure_connected
    return fnct(self, *args, **kwargs)
           │    │      │       └ {}
           │    │      └ ()
           │    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
           └ <function Vlan.apply at 0x7355221feaf0>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/vlan.py", line 213, in apply
    modified = self.create()
    │          └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
    └ False
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/pyaoscx_module.py", line 40, in ensure_connected
    return fnct(self, *args, **kwargs)
           │    │      │       └ {}
           │    │      └ ()
           │    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
           └ <function Vlan.create at 0x7355221fed30>
  File "/home/fam/.virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/vlan.py", line 299, in create
    return self._post_data(vlan_data)
           │               └ {'mgmd_enable': {}, 'id': 16, 'name': 'VLAN 16'}
           └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/pyaoscx_module.py", line 253, in _post_data
    self.get()
    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/pyaoscx_module.py", line 40, in ensure_connected
    return fnct(self, *args, **kwargs)
           │    │      │       └ {}
           │    │      └ ()
           │    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
           └ <function Vlan.get at 0x7355221fe940>
  File "/home/fam/.virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/vlan.py", line 86, in get
    self.vsx_sync = data.pop("vsx_sync")
    │               └ {'aclmac_in_cfg': None, 'aclmac_in_cfg_version': None, 'aclv4_in_cfg': None, 'aclv4_in_cfg_version': None, 'aclv4_out_cfg': None...
    └ <pyaoscx.vlan.Vlan object at 0x7355221a6280>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/vlan.py", line 308, in vsx_sync
    device.get(selector="status")
    └ <pyaoscx.device.Device object at 0x7355221a6790>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/pyaoscx_module.py", line 40, in ensure_connected
    return fnct(self, *args, **kwargs)
           │    │      │       └ {'selector': 'status'}
           │    │      └ ()
           │    └ <pyaoscx.device.Device object at 0x7355221a6790>
           └ <function Device.get at 0x7355221c9c10>
  File ".virtualenvs/pyaoscx26/lib/python3.9/site-packages/pyaoscx/device.py", line 74, in get
    raise GenericOperationError(response.text, response.status_code)
          │                     │              └ <Response [401]>
          │                     └ <Response [401]>
          └ <class 'pyaoscx.exceptions.generic_op_error.GenericOperationError'>
pyaoscx.exceptions.generic_op_error.GenericOperationError: 'GENERIC OPERATION ERROR: Unauthorized: Code: 401'

The problem exists since pyaoscx version 2.2.0, where the class “Singleton” was introduced in pyaoscx_factory.py. It looks like the old instance is cached.
There is a workaround by setting the following after each session close:

Device._Singleton__instance = None