define语句中的一些数学函数和更多函数

Question

我是python新手，我在这里尝试做一些数学、数量和平衡。但在定义函数时，不要做任何事情来平衡，和数量。当我打印它们时，它们仍然是库存

Ballance = 7000 # 7K DEMO
# SANDELYS
Indica_WEED_QUANITY = 600
AMAZON_QUANITY = 18
STEAM_GIFT50_QUANITY = 4
# Price
STEAM_GIFT50_PRICE_PER1 = 50 # Each
Indica_WEED_PRICE_PER1 = 8
Amazon_Prime_PRICE_PER1 = 25 # Each

def PickForShopItem():
    ShopPick = int(input("~ PRODUCT ID = "))
    if ShopPick == 1:
        clear()
        while True:
            Pasirinxm = input("Would You like to continue buying ~ Indica WEED KUSH * ?\n* Y/N: ")
            if "Y" in Pasirinxm or "y" in Pasirinxm:
                clear()
                BuyKiekis = int(input("~ How many you would to buy of " + Indica_WEED_NAME + "?\n "))
                Indica_WEED_QUANITY - BuyKiekis # Atimam Ir paliekam sandari mazesni
                Bendra_Suma = ( BuyKiekis * Indica_WEED_PRICE_PER1)
                print(Bendra_Suma)
                Ballance = 500
                print(Ballance - Bendra_Suma)
                print("Sandelio Kiekis po pirkimo " + str(Indica_WEED_QUANITY))
                print(Ballance)

                break
            elif "N" in Pasirinxm or "n" in Pasirinxm:
                print("xuine iseina")
                break
            elif " " in Pasirinxm or len(Pasirinxm) < 1:
                print("PLease dont do shit")
                continue
                break
    elif ShopPick == 2:
        print("Darai")
    elif ShopPick == 3:
        print("hgelo")

Indica_WEED_NAME = "~ Indica WEED KUSH *

Answer 1

我认为你的问题是：

Indica_WEED_QUANITY - BuyKiekis

不更新变量“Indica\u WEED\u quantity”（在print(ballance - BendraSuma)行中也有同样的问题）

在Python中，该语句只会计算出一个值，但不会告诉程序将其保存或存储在任何地方。请执行以下操作：

Indica_WEED_QUANITY = Indica_WEED_QUANITY - BuyKiekis

Python还允许您使用-=运算符：

Indica_WEED_QUANITY -= BuyKiekis

将通过减去买方的金额来更新指标数量