code: def get_update_clause_from_dict(dictionary, datetime_format='%Y-%m-%d %H:%M:%S'):
          
          items = []
  
          CoyoteDb.escape_dictionary(dictionary, datetime_format=datetime_format)
          for k,v in dictionary.iteritems():
              item = '{k} = {v}'.format(k=k, v=v)
              items.append(item)
          clause = ', '.join(item for item in items)
          return clause
docs: Builds the update values clause of an update statement based on the dictionary representation of an
          instance