field:
  name: "学号"
  field: "code"
info:
  field: "code"
  data_type: "random"
  get_func: "get_random"
  parameter:
    random_type:
      - number
      - letter
    number:
      min_val: 0
      max_val: 9
    letter:
      uppercase: true
    length: 12