我正在使用customtkinter创建一个toplevel，但是当我尝试以toplevel而不是使用main.loop()运行它时，它会出现错误。

Question

我正在使用tkinter和customtkinter开发一个GUI程序。在尝试创建这个popUpBox时，我似乎遇到了一个恼人的错误。重要的是，我在脚本运行期间使用它打开带有单选按钮的弹出框以进行选择。如果我在主循环中运行它，它就会正常工作，但是如果我尝试在主GUI中运行它，它就会崩溃，如果我试图以topLevel的形式运行它，我会得到底部的错误。

import tkinter
import customtkinter


class equipPopUp(customtkinter.CTkToplevel):
    def __init__(self,titleName,staff,labelFound=''):
        super().__init__()        
        self.rfrBTNList=[]
        self.printBTNList=[]
        
        
        self.labelFound = labelFound
        self.staff = staff
        
        if self.staff == 0:
            self.status = 'Student'
        elif self.staff == 1:
            self.status = 'Staff'
        
        self.titleName = titleName
        
        #### Main Window ###
        self.title(f"{titleName}")
        window_width = 750
        window_height = 600
        screen_width = self.winfo_screenwidth()
        screen_height = self.winfo_screenheight()
                # find the center point
        center_x = int(screen_width/2 - window_width / 2)
        center_y = int(screen_height/2 - window_height / 2)
        self.geometry(f'{window_width}x{window_height}+{center_x}+{center_y}')

       
        self.btn1 = tkinter.StringVar()
        self.btn2 = tkinter.StringVar()
        self.btn3 = tkinter.StringVar()
        
        self.label_radio_group = customtkinter.CTkLabel(master=self,
                                                        text="Please Select Request Equipment:")
        self.label_radio_group.grid(row=0,column=0,sticky='nw')


        if self.labelFound == 'N':
            z = 0
            Equipment_Requested = ["Print Return Label at SCA", "Email Electronic Return Label", "Email Electronic Return Label"]
            for i in Equipment_Requested:
                z+=1
                self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                                text= i,
                                                                variable=self.btn3,
                                                                value=z)
                self.radio_button.grid(row=z,column=0,sticky='nw')


            x = 0
            Equipment_Requested = [f"Replacement {self.status} Kit", f"Replacement {self.status} Printer", "Charger"]
            for i in Equipment_Requested:
                x+=1
                self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                                text= i,
                                                                variable=self.btn1,
                                                                value=x,
                                                                command=self.submitButton)
                self.radio_button.grid(row=x,column=1,sticky='nw')
        else:
            x = 0
            Equipment_Requested = [f"Replacement {self.status} Kit", f"Replacement {self.status} Printer", "Charger"]
            for i in Equipment_Requested:
                x+=1
                self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                                text= i,
                                                                variable=self.btn1,
                                                                value=x,
                                                                command=self.submitButton)
                self.radio_button.grid(row=x,column=0,sticky='nw')

    
    def createLabelBtns(self):
        y=0
        ra=self.label_radio_group2 = customtkinter.CTkLabel(master=self,
                                                        text="Please Select Reason for Return:")
        self.label_radio_group2.grid(row=0,column=2,sticky='nw')
        self.rfrBTNList.append(ra)
        rlm = ["Print Return Label at SCA", "Email Electronic Return Label", "Email Electronic Return Label"]
        for i in rlm:
            y+=1
            rb=self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                            text= i,
                                                            variable=self.btn3,
                                                            value=y)
            self.radio_button.grid(row=y,column=2,sticky='nw')
            self.rfrBTNList.append(rb) 
    
    
    def createRFRBtns(self):
        y=0
        ra=self.label_radio_group2 = customtkinter.CTkLabel(master=self,
                                                        text="Please Select Reason for Return:")
        self.label_radio_group2.grid(row=0,column=2,sticky='nw')
        self.rfrBTNList.append(ra)
        equipment_reason_for_return = ["Display", "OS/MB", "Keyboard", "Camera", "Audio/Mic", "Battery", "Physical Damage"]
        for i in equipment_reason_for_return:
            y+=1
            rb=self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                            text= i,
                                                            variable=self.btn2,
                                                            value=y)
            self.radio_button.grid(row=y,column=2,sticky='nw')
            self.rfrBTNList.append(rb)
            
        self.my_button = customtkinter.CTkButton(master=self, text="Submit", command = self.destroy)
        self.my_button.grid(row=8,column=2,sticky='nw')
            
    def createPrinterChoices(self): 
        y=0
        ra=self.label_radio_group3 = customtkinter.CTkLabel(master=self,
                                                        text="Please Select Reason for Return of Printer:")
        self.label_radio_group3.grid(row=0,column=2,sticky='nw')
        self.printBTNList.append(ra)
        equipment_reason_for_return = ["Hardware", "Software"]
        for i in equipment_reason_for_return:
            y+=1
            rb=self.radio_button = customtkinter.CTkRadioButton(master=self,
                                                            text= i,
                                                            variable=self.btn2,
                                                            value=y)
            self.radio_button.grid(row=y,column=2,sticky='nw')
            self.printBTNList.append(rb)
            
        self.my_button = customtkinter.CTkButton(master=self, text="Submit", command = self.destroy)
        self.my_button.grid(row=8,column=2,sticky='nw')
        
   
    def submitButton(self):
        if self.btn1.get()=='1':
            for widget in self.printBTNList:
                widget.grid_remove()
            self.createRFRBtns()
        if self.btn1.get()=='2':
            for widget in self.rfrBTNList:
                widget.grid_remove()
            self.createPrinterChoices()
        if self.btn1.get()=='3':
            for widget in self.rfrBTNList:
                widget.grid_remove()
            for widget in self.printBTNList:
                widget.grid_remove()
            self.my_button = customtkinter.CTkButton(master=self, text="Submit", command = self.returnStuff)
            self.my_button.grid(row=8,column=2,sticky='nw')           
            
    
    def submitButton2(self):
        self.destroy

    
    def printSubmitBTN(self):
        # print("Printer"+self.btn2.get())
        pass
    
    
    def returnStuff(self):
        return self.btn1.get(),self.btn2.get(),self.btn3.get()
    
    def start(self):
        self.mainloop()
        print(type(self.btn1.get()))
        print(type(self.btn2.get()))
        print(type(self.btn3.get()))
        return self.btn1.get(),self.btn2.get(),self.btn3.get()

我收到的错误是

rlm,ERI,RFRI = equipPopUp('Equipment Requested',staff,'N')
File "C:\Program Files\Python39\lib\tkinter\__init__.py", line 1652, in cget
return self.tk.call(self._w, 'cget', '-' + key)
TypeError: can only concatenate str (not "int") to str

我在用

staff=1
rlm,ERI,RFRI = equipPopUp('Equipment Requested',staff,'N')

我不知道是什么引起的。我已经研究了这个特别的错误，从我收集到的信息来看，我应该尝试把str和int混合在一起，但是我只是不知道它在哪里做的。我正在使用python版本3.9.13

Answer 1

问题是这条线：

rlm,ERI,RFRI = equipPopUp('Equipment Requested',staff,'N')

我不知道为什么你认为equipPopUp(...)会返回一个元组。因为它是一个类，所以它返回一个对象。试图将结果转换为元组将导致错误。

在这段代码的第二行中，您可以得到完全相同的错误：

popup = equipPopUp('Equipment Requested',staff,'N')
rlm,ERI,RFRI = popup

因此，为了消除错误，不要尝试将equipPopUp实例转换为元组。