Question

我有以下代码：

    from tkinter import *

################### Variables
Screenx = "640"
Screeny = "480"
screenSize = str(Screenx + "x" + Screeny)

global BTC
BTC = 0.000123

global processor
processor = 5

global USD
USD = 150000

global Auto_Miners
Auto_Miners = 1

global Computers
Computers = 3

global MinePower
MinePower = Computers * (0.0001 * processor)

global entryText
entryText = ('empty')

global entryPurpose
entryPurpose = "Nothing"

global BTCPrice
BTCPrice = 0.5



################## Function Definitions

def Mine_BTC():
    global MinePower
    global BTC
    BTC = BTC + MinePower
    print("Mining " + str(MinePower) + " BitCoins...")
    BitCoinLabel2.config(text=str(BTC))

def Buy_AM():
    global Auto_Miners
    global USD
    if USD >= 100:
        Auto_Miners = Auto_Miners + 1
        print("Bought 1 autominer...")
        AutominersLabel1.config(text=Auto_Miners)
        USD = USD - 100
    else:
        print("Damn you are poor...")

def Buy_Computers():
    global Computers
    global USD
    if USD >= 300:
        Computers = Computers + 1
        print("Bought 1 Computer...")
        ComputerLabel1.config(text=Computers)
        USD = USD - 300
    else:
        print("Damn you are poor...")

def Buy_Processor():
    global USD
    global processor
    if USD >= 450:
        processor = processor + 1
        print("PP + 1")
        ProLabel.config(text=processor)
        USD = USD - 450
    else:
        print("What a poor man...")


def EnterButton():
    global entryText
    global entryPurpose
    global BTC
    global USD
    text_E = EntryA.get()
    print(text_E)
    if entryPurpose == ("How many USD to BTC?"):
        BTC = BTC + (int(text_E) % int(BTCPrice))
        print(BTC)
        USD = USD - text_E
        print(USD)
    elif entryPurpose == ("How many BTC to USD?"):
        USD = text_E * BTCPrice
        print(USD)
        BTC = BTC - int(text_E)
        print(BTC)










def BuyBTC():
    global entryPurpose
    print(entryPurpose)
    entryPurpose = ("How many USD to BTC?")
    print(entryPurpose)
    entryP.config(text=entryPurpose)

def SellBTC():
    entryPurpose = "How many BTC to USD?"
    entryP.config(text=entryPurpose)





################# Screen Mainloop

screen = Tk()
screen.title("BitCoin Simulator")
screen.geometry(screenSize)

canvas = Canvas()
canvas.pack()
canvas.create_line(10, 0, 10, 600)
canvas.create_rectangle(200, 30, 350, 200)



EntryA = Entry(screen, textvariable=entryText)
EntryA.place(x=150, y=300)

EntryB = Button(screen, text="Enter", bg="blue")
EntryB.config(command=EnterButton)
EntryB.place(x=170, y=350)


BitCoinLabel1 = Label(screen, text="BitCoins: ").place(x=150, y=10)
BitCoinLabel2 = Label(screen, text=str(BTC)) ###
BitCoinLabel2.place(x=220, y=10)

MineButton = Button(screen, text="Mine")
MineButton.config(command=Mine_BTC)
MineButton.place(x=150, y=30)

AutominersButton = Button(screen, text="Auto-Miners:")
AutominersButton.config(command=Buy_AM)
AutominersButton.place(x=150, y=80)

AutominersLabel1 = Label(screen, text=Auto_Miners)
AutominersLabel1.place(x=270, y=85)

ComputersButton = Button(screen, text="Computers:")
ComputersButton.config(command=Buy_Computers)
ComputersButton.place(x=150, y=120)

ComputerLabel1 = Label(screen, text=Computers)
ComputerLabel1.place(x=270, y=120)

ProButton = Button(screen, text="Processors:")
ProButton.config(command=Buy_Processor)
ProButton.place(x=150, y=180)

ProLabel = Label(screen, text=processor)
ProLabel.place(x=285, y=180)

BuyButton = Button(screen, text="BUY")
BuyButton.config(command=BuyBTC)
BuyButton.place(x=340, y=170)

SellButton = Button(screen, text="SELL")
SellButton.config(command=SellBTC)
SellButton.place(x=410, y=170)

entryP = Label(screen, text=str(entryPurpose))
entryP.place(x=150, y=270)




screen.mainloop()

上面的代码是一个关于BitCoin的小程序，它还没有完成。

在第88行，我有这个代码： BTC = BTC +（int（text_E）％int（BTCPrice））

我得到一个除0错误... text_E从不为0. BTCPrice设置为0.01。如果我改变为9或6578之类的东西，我不会得到错误。因此我猜测它需要十进制数（并且不仅仅是0.01; 0.88和0.02828）作为0.我尝试使用/和％进行分割，但我得到相同的结果。有人能告诉我如何解决这个问题吗？谢谢

Answer 1

int函数始终将输入舍入到最接近的整数。 int(0.01)评估为0，因为小于0.01的最大整数为0.我个人不明白为什么要将BTCPrice转换为整数，但是嘿，我＆＃39 ;我在这里回答你的问题。

其他一些事情：

如果在全局级别声明变量，则无需说global variable。 global仅在从不同范围内修改变量时使用。

您可以只编写BTC = BTC + (int(text_E) % int(BTCPrice))，而不是撰写BTC += (int(text_E) % int(BTCPrice))。这是一个复合语句。通常，x += y仅表示x = x + y。这也适用于-=, *=, /=, **= (exponentiation), and %=。

Python3：除以0错误，带小数

1 个答案: