Named parameters are not handled correctly for key generation

[Ryan0751]

If I memoize a class:

@memoize class TestManager:

And then use named parameters in the object construction:

test1 = TestManager("10.1.1.1", test_param="1.1.1.1")

The part of the library the computes the cache key fails:
/home/rruel/.pyenv/versions/3.10.8/envs/test/lib/python3.10/site-packages/nemoize/memoize.py:87: TypeError =========================================================================================================================================================== short test summary info =========================================================================================================================================================== FAILED test_connection.py::test_connmanager_memoization - TypeError: unsupported operand type(s) for +=: 'int' and 'object'

If I do not use named parameters, everything works fine.

Ideally I would like the keys to be computed such that if a user requests a new instance, it shouldn't matter the ordering of kwargs, or a mix of named vs. unamed parameters,

[Ryan0751]

This solution for key generation seems to be working well:

            # Bind args and kwargs to the memoized signature to get the actual arg names values that will be passed.
            bound_args = inspect.signature(self._f).bind(*args, **kwargs)

            # Build the cache key using the bound arguments.
            key = ""
            for k, v in bound_args.arguments.items():
                key += str((self._arg_hash_func(k)))
                key += str((self._arg_hash_func(v)))

            key = hash(key)