I have a function that I use to convert a list of dictionaries into a list of tuples, similar to `itertools.groupby()` would do in an ideal world.  The goal is to make a list of `{unique-dict}` => `[list of values]`.  I'm having a hard time explaining it, so I hope the example makes it clear. 

I couldn't find a thing on Google, so I wrote it pretty quickly, and I am wondering if there is a better way to do this (or a standard library even).

* _Naming things is hard... what is a better one_?
* This is a task I performed fairly often when receiving user input
* The keys in each dict may not be consistent (some may be missing)
* It is OK to destroy or mangle the original input list & items
* Validation is done before calling, so 'key_field' is always present
* It is expected that values can be duplicated in the list
 * `{ status: 1 } => [1,2,3,4,1,2]` is ok, if the values are actually present twice.

### Simple little Python function:

    def group_by_excluding_key(list_of_dicts, key_field):
        """
        Takes a list of `dict` items and groups by ALL KEYS in the dict EXCEPT the key_field.
        :param list_of_dicts: List of dicts to group
        :param key_field: key field in dict which should be excluded from the grouping
        """
    
        output = []
    
        for item in list_of_dicts:
    
            found = False
            search_group = {k: v for k, v in item.items() if k != key_field}
            item_value = item[key_field]
    
            for existing_group, found_keys in output:
                if existing_group.viewitems() == search_group.viewitems():
                    found_keys.append(item_value)
                    found = True
    
            if not found:
                output.append((search_group, [item_value]))
    
        return output


### Example Input/Output
    from pprint import pprint
    
    data = [
        {'id': 1, 'status': 1, 'product': 1},
        {'id': 2, 'status': 1, 'product': 1},
        {'id': 7, 'status': 1, 'product': 2},
        {'id': 9, 'status': 1, 'product': 2},
        {'id': 3, 'status': 1, 'product': 1},
        {'id': 4, 'status': 1, 'product': 1},
        {'id': 8, 'status': 1, 'product': 2},
        {'id': 1, 'status': 1, 'product': 1},
    ]

    results = group_by_excluding_key(data, 'id')
    
    pprint(results)
    
    # [({u'product': 1, u'status': 1}, [1, 2, 3, 4, 1]),
    #  ({u'product': 2, u'status': 1}, [7, 9, 8])]