code: def parse_query_value(combined_value):
      
      split = len(combined_value) - len(combined_value.lstrip('<>='))
      operator = combined_value[:split]
      if operator == '':
          operator = '='
      try:
          operator_func = search_operators[operator]
      except KeyError:
          raise ValueError(
              'Numeric query should start with operator, choose from %s' %
              ', '.join(search_operators.keys()))
      value = combined_value[split:].strip()
      return operator_func, value
docs: Parse value in form of '>value' to a lambda and a value.