code: def partialclass(cls, *args, **kwargs):
      
  
      name_attrs = [
          n
          for n in (getattr(cls, name, str(cls)) for name in ("__name__", "__qualname__"))
          if n is not None
      ]
      name_attrs = name_attrs[0]
      type_ = type(
          name_attrs, (cls,), {"__init__": partialmethod(cls.__init__, *args, **kwargs)}
      )
      # Swiped from attrs.make_class
      try:
          type_.__module__ = sys._getframe(1).f_globals.get("__name__", "__main__")
      except (AttributeError, ValueError):  # pragma: no cover
          pass  # pragma: no cover
      return type_
docs: Returns a partially instantiated class
  
      :return: A partial class instance
      :rtype: cls
  
      >>> source = partialclass(Source, url="https://pypi.org/simple")
      >>> source
      <class '__main__.Source'>
      >>> source(name="pypi")
      >>> source.__dict__
      mappingproxy({'__module__': '__main__', '__dict__': <attribute '__dict__' of 'Source' objects>, '__weakref__': <attribute '__weakref__' of 'Source' objects>, '__doc__': None, '__init__': functools.partialmethod(<function Source.__init__ at 0x7f23af429bf8>, , url='https://pypi.org/simple')})
      >>> new_source = source(name="pypi")
      >>> new_source
      <__main__.Source object at 0x7f23af189b38>
      >>> new_source.__dict__
      {'url': 'https://pypi.org/simple', 'verify_ssl': True, 'name': 'pypi'}