code: def dicts_filter(dicts_object, field_to_filter, value_of_filter):
      
      lambda_query = lambda value: value[field_to_filter] == value_of_filter
  
      filtered_coin = filter(lambda_query, dicts_object)
      selected_coins = list(filtered_coin)
      #if not selected_coin: #Empty list, no coin found
      #    raise AttributeError('attribute %s not found' % attr)
      return selected_coins
docs: This function gets as arguments an array of dicts through the dicts_objects parameter,
         then it'll return the dicts that have a value value_of_filter of the key field_to_filter.