Get Variables from Checkbox in Python

I tried to create a multiple checkboxes and get the information whether they are checked or not. I tried to use tkinter for this purpose. The number of checkboxes would be variable. Up to now, i found a way to create the checkboxes with the following code. With this, 10 checkboxes are created at which people can tick any of them

class Example(tk.Frame):
    def __init__(self, root, *args, **kwargs):
        tk.Frame.__init__(self, root, *args, **kwargs)
        self.root = root

        self.vsb = tk.Scrollbar(self, orient="vertical")
        self.text = tk.Text(self, width=40, height=20, 
                            yscrollcommand=self.vsb.set)
        self.vsb.config(command=self.text.yview)
        self.vsb.pack(side="right", fill="y")
        self.text.pack(side="left", fill="both", expand=True)
        
        n=10
        for i in range(n):
            cb = tk.Checkbutton(self, text="Modul %s" % i)
            self.text.window_create("end", window=cb)
            self.text.insert("end", "\n")

if __name__ == "__main__":
    root = tk.Tk()
    Example(root).pack(side="top", fill="both", expand=True)
    root.mainloop()

However, the information are not saved in any variable. If I add variable to be dumped in the cb, the code will check every checkboxes. The edited code section is as follow (sorry that I couldn't highlight the addition):

class Example(tk.Frame):
    def __init__(self, root, *args, **kwargs):
        tk.Frame.__init__(self, root, *args, **kwargs)
        self.root = root

        self.vsb = tk.Scrollbar(self, orient="vertical")
        self.text = tk.Text(self, width=40, height=20, 
                            yscrollcommand=self.vsb.set)
        self.vsb.config(command=self.text.yview)
        self.vsb.pack(side="right", fill="y")
        self.text.pack(side="left", fill="both", expand=True)
        
        n=10
        var1 = IntVar()
        val =[]
        for i in range(n):
            cb = tk.Checkbutton(self, text="Modul %s" % i, variable=var1)
            self.text.window_create("end", window=cb)
            self.text.insert("end", "\n") # to force one checkbox per line
            val.append(var1.get())

if __name__ == "__main__":
    root = tk.Tk()
    Example(root).pack(side="top", fill="both", expand=True)
    root.mainloop()

Could you help what can I add to the code in order to be able to get the checked Modules by the user? for insntance i will get in "val" variable a list with [1, 0, 1, 0, 0, 0, 1, 0, 0, 0] if somebody tick module 0, 2, and 6

I look forward for your feedback.

thank you in advance, fadri