code: def ungroup_array2singles(input, **params):
      
      PARAM_FIELD_KEY = 'field.key'
      PARAM_FIELD_ARRAY = 'field.array'
      PARAM_FIELD_SINGLE = 'field.single'
  
      res = []
      field_key = params.get(PARAM_FIELD_KEY) if PARAM_FIELD_KEY in params else None
      field_array = params.get(PARAM_FIELD_ARRAY)
      field_single = params.get(PARAM_FIELD_SINGLE)
      for row in input:
          if row[field_array] and len(row[field_array]) > 0:
              for value in row[field_array]:
                  res.append({field_single: value} if not field_key else {field_key: row[field_key], field_single: value})
      return res
docs: Creates list of objects from array of singles
      :param input: list of strings or ints
      :param params:
      :return: