Python Tkinter: AttributeError: 'str' object has no attribute '

So this is the code:

import customtkinter, tkinter
import win32gui, win32con

customtkinter.set_appearance_mode('system')
customtkinter.set_default_color_theme('blue')

class DebugPrompt(customtkinter.CTk):
    def __init__(self):
        super().__init__()

        self.title("3DT Menu")
        self.attributes('-transparentcolor', self['bg'])
        self.overrideredirect(1)
        self.focus_force()

        self.w = 500
        self.h = 350
        self.sw = self.winfo_screenwidth()
        self.sh = self.winfo_screenheight()
        self.x = (self.sw / 2) - (self.w / 2)
        self.y = (self.sh / 2) - (self.h / 2)
        self.geometry('%dx%d %d %d' % (self.w, self.h, self.x, self.y))

        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure((0, 1), weight=1)

        self.frame = customtkinter.CTkFrame(master=self)
        self.frame.grid(row=0, column=0, columnspan=1, padx=20, pady=(20, 20))

        self.loadingLabel = customtkinter.CTkLabel(master=self.frame, text='Debug Menu', font=('Roboto', 24))
        self.loadingLabel.grid(row=0, column=0, columnspan=1, padx=20, pady=(20, 20))

        self.hideConsole = False
        self.hideConCheckBX = customtkinter.CTkCheckBox(master=self.frame, text='Disable terminal on program start', variable= check_var,onvalue='on', offvalue='off')
        self.hideConCheckBX.grid(row=1, column=0, columnspan=1, padx=20, pady=(10, 0))

    check_var = tkinter.StringVar("on")


app = DebugPrompt()
app.mainloop()

and I get this error

Traceback (most recent call last):
  File "C:\Users\epicg\OneDrive\Desktop\Code\ExamAppDemo\gui\boot\debug.py", line 7, in <module>
    class DebugPrompt(customtkinter.CTk):
  File "C:\Users\epicg\OneDrive\Desktop\Code\ExamAppDemo\gui\boot\debug.py", line 37, in DebugPrompt
    check_var = tkinter.StringVar("on")
  File "C:\Users\epicg\AppData\Local\Programs\Python\Python310\lib\tkinter\__init__.py", line 540, in __init__
    Variable.__init__(self, master, value, name)
  File "C:\Users\epicg\AppData\Local\Programs\Python\Python310\lib\tkinter\__init__.py", line 372, in __init__
    self._root = master._root()
AttributeError: 'str' object has no attribute '_root'

I have spent 1 hour trying to look at answers but none of them worked! Please help

Looked at lots of answers :(

CodePudding user response：

The first positional parameter to IntVar and the other variable classes is the master that owns the variable. You are passing in the string "on" which cannot be a master.

If you want to initialize the value, pass it as a keyword argument:

tkinter.StringVar(value="on")

This is the signature for Variable.__init__ (all tkinter variable classes inherit from this class):

class Variable:
    def __init__(self, master=None, value=None, name=None):
        """Construct a variable

        MASTER can be given as master widget.
        VALUE is an optional value (defaults to "")
        NAME is an optional Tcl name (defaults to PY_VARnum).

        If NAME matches an existing variable and VALUE is omitted
        then the existing value is retained.