Bug #925 fix

[Sepehr-A]

Bug #925 Report Summary

A user reported a usability issue with Suzieq version 0.22.0 when using the Python API to retrieve path information. The API call was made with namespace provided as a string instead of a list, leading to an EmptyDataframeError. The error did not clearly indicate the cause, leading to confusion.

Changes Made

To address this issue, two significant changes were implemented:

Introduction of Argument Validation in basicobj.py:

• A new method _validate_list_args was added to enforce that certain arguments, specifically namespace and hostname, are provided as lists. If these arguments are not lists, the method raises a TypeError with a clear and informative error message.

Modification in topology.py:

• The initialization of self._namespaces was set to an empty list [].
• In the get method, self._namespaces was changed to default to an empty list [] instead of using self.ctxt.namespace. This modification was implemented to address testing issues that arose following the introduction of _validate_list_args in basicobj.py.

[LucaNicosia]

After you have done with the fixes. Squash all the commits on basicobj file