用单选按钮导入模块时遇到问题 - python

Question

嗨，我制作了一个运行各种其他程序的程序。我导入模块并且对于没有涉及单选按钮的程序工作正常。带有单选按钮的程序在单独运行时可以正常工作。当它们通过我的菜单程序时，单选按钮不会给出IntVar值。任何人有任何想法如何解决这个问题？这些模块是我的程序，但他们都使用Tkinter。下面是菜单代码：

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() 

下面是单选按钮节目之一代码：

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

问题的关键是，你要创建的Tk两个实例。你不能那样做。 Tkinter是专门为您创建的，在任何时候都只创建一个Tk的单个实例。您的模块应创建实例Toplevel而不是Tk的实例，并且在模块导入时，它们不应创建新的事件循环。