Yourun-proger

def add(x=None):
    if x is None:
        return getattr(add, 'result', 0)
    else:
        if hasattr(add, 'result'):
            add.result += x
        else:
            setattr(add, 'result', x)
        return add

Yourun-proger

import time
from dataclasses import dataclass
from typing import List


@dataclass
class Item:
    id: int
    name: str

Yourun-proger

package main

import "fmt"

//-------------------- ABSTRACT INTERFACES --------------------

type WaterAbsorber interface {
	Pour(num int)
	TotalLiquid() int
}