for joshy boy

xml_dict = {'g:price' : item.Price, #key, 'g:price' is a string, item.Price is a attribute name or whatever
            'title': item.SKU,
            'description' : item.Description} #etc etc

xml_dict.keys() #is a list of all the keys in the dict, so 'gprice' and 'title' and 'desc'

if reader.Name in xml_dict.keys(): #if the name matches any of the keys  in the dict
    xml_dict[reader.Name] = reader.ReadElemContAsStr() # set the value of the key to the element in the XML
    # line above turns into: item.SKU = reader.ReadElementContentAsString()


    # example: reader.Name = 'title' so it'd be like : xml_dict['title'] which leads has a value of:
    #   item.SKU, so in the end, you'd be setting item.SKU to whatever value the Element is:
    #