scripts:
  run:
    description: 四则运算
    inputs:
      a:
        type: int or float
        required: true
        description: 计算左值
      op:
        type: str
        required: true
        description: 计算方法
        enum: ['+', '-', '*', '/']
      b:
        type: int or float
        required: true
        description: 计算左值