Error in template generation: When processing a list of multiple libraries a nested list is created

[pfannkuch3n]

Description

If one tries to use the template_generation script with:

 libraries_to_load = [aixlib_library, custom_models_library]
 template_generation.main(custom_library=libraries_to_load, 
                        custom_models = "data/template_components.json", #Look hint above
                        workspace = store_path,
                        rigorous = False) #rigorous = True will overwrite existing templates

Following error occurs:

  abs_path = os.path.abspath(path).replace("\\", "/")
              ~~~~~~~~~~~~~~~^^^^^^
 File "<frozen ntpath>", line 576, in abspath
TypeError: _path_normpath: path should be string, bytes or os.PathLike, not list

Problem background

In template_generation.py of uesgraphs custom_library will be treated as such:
if custom_library: libs_to_load = [custom_library]
As result libs_to_load is a nested list

Possible solution

Change libs_to_load to:

libs_to_load = custom_library if isinstance(custom_library, list) else [custom_library]
so single libraries as well as multiple libraries packed to list will get processed