Removing duplicate keys from python dictionary but summing the values

Question

I have a dictionary in python

d = {tags[0]: value, tags[1]: value, tags[2]: value, tags[3]: value, tags[4]: value}

imagine that this dict i

Answer 1

This option serves but is done with a list, or best can provide insight

data = []
        for i, j in query.iteritems():
            data.append(int(j))    
        try:
            data.sort()
        except TypeError:
            del data
        data_array = []
        for x in data:
            if x not in data_array:
                data_array.append(x)  
        return data_array