用單選按鈕導入模塊時遇到問題 - python

Question

嗨，我製作了一個運行各種其他程序的程序。我導入模塊並且對於沒有涉及單選按鈕的程序工作正常。帶有單選按鈕的程序在單獨運行時可以正常工作。當它們通過我的菜單程序時，單選按鈕不會給出IntVar值。任何人有任何想法如何解決這個問題？這些模塊是我的程序，但他們都使用Tkinter。下面是菜單代碼：

from Tkinter import * 
def cmd(): 
    if var.get() == 1: 
     import animal_age_calculator 
     animal_age_calculator.createDisplay() 
    if var.get() == 2: 
     import temperatureCalculator 
     temperatureCalculator.createDisplay() 
    if var.get() == 3: 
     import calculator 
     calculator.createDisplay() 
    if var.get() == 4: 
     import currencyConverter 
     currencyConverter.createDisplay() 

def createDisplay(): 
    global var 
    root = Tk() 
    root.title('Calculator') 

    title = Label(root, text='Please Select which Calculator you would like to use',  font=50) 
    title.grid(row=0, column=0) 

    calcType = Frame(root) 
    calcType.grid(row=1, column=0) 
    var = IntVar() 
    animal = Radiobutton(calcType, text='Animal Age Calculator', variable=var, value=1) 
    animal.pack() 

    tempConverter = Radiobutton(calcType, text='Temperature Calculator', variable=var, value=2) 
    tempConverter.pack() 

    calc = Radiobutton(calcType, text='Calculator', variable=var, value=3) 
    calc.pack() 

    currency = Radiobutton(calcType, text='Currency Converter', variable=var, value=4) 
    currency.pack() 

    select = Button(root, text='Go', command=cmd) 
    select.grid(row=2, column=0) 

    root.mainloop() 

if __name__ == '__main__': 
    createDisplay() 

下面是單選按鈕節目之一代碼：

from Tkinter import * 
def convert(temperature): 
    global var4 
    a = var4.get() 
    print(str(a)) 
    if a == 1: 
     print 'test2' 
     display.delete(1.0, END) 
     finalTemp = int(temperature)*1.8+32 
     finalTemp = round(finalTemp, 1) 
     display.insert(INSERT, finalTemp) 
    if a == 2: 
     display.delete(1.0,END) 
     finalTemp = int(temperature)-32/1.8 
     finalTemp = round(finalTemp, 1) 
     display.insert(INSERT, finalTemp) 

def createDisplay(): 
    global display, var4 
    root = Tk() 
    root.title('Temperature Converter') 
    root.resizable(width=False, height=False) 

    title = Label(root, text="Welcome to the temperature converter", font=36) 
    title.grid(row=0, column=1, columnspan=3) 

    selTemp = LabelFrame(root, text="Please select your temperature") 
    selTemp.grid(row=1, column=2) 

    temp = Scale(selTemp, orient=HORIZONTAL, sliderlength=20, from_=0, to=250, length=250, command=convert) 
    temp.pack() 
    temperature = temp.get() 

    displayFrame = LabelFrame(root, text="Your converted temperature is") 
    displayFrame.grid(row=1, column=3) 
    display = Text(displayFrame, width=6, height=1) 
    display.pack() 

    var4 = IntVar() 
    tempType = LabelFrame(root, text='Please select your temperature you would like to convert') 
    tempType.grid(row=1, column=1) 
    celcius = Radiobutton(tempType, text="Celcius", variable=var4, value=1) 
    celcius.pack() 
    fahrenheit = Radiobutton(tempType, text="Fahrenheit", variable=var4, value=2) 
    fahrenheit.pack() 
    root.mainloop() 

if __name__ == '__main__': 
    createDisplay() 

Answer 1

問題的關鍵是，你要創建的Tk兩個實例。你不能那樣做。 Tkinter是專門爲您創建的，在任何時候都只創建一個Tk的單個實例。您的模塊應創建實例Toplevel而不是Tk的實例，並且在模塊導入時，它們不應創建新的事件循環。