Update @named_data to use __name__ attribute when available

[orgadish]

named_data(*lists_of_values) currently uses str(lst[0]), but when the first value is an object with a __name__ attribute (e.g. function or class), I think it makes sense to use that instead (otherwise the memory information or the namespace of the object is included)

def my_func():
    pass

class MyClass:
    pass

print(str(my_func))
#> <function my_func at 0x0000013E234D1760>
print(my_func.__name__)
#> my_func

print(str(MyClass))
#> <class '__main__.MyClass'>
print(MyClass.__name__)
#> MyClass