[Tkinter] Toplevel window

[deanhystad]

The view should not save data. Your data model should save/restore data.

I cannot find anything in tkinter that returns a list of variables, but you can get all the variables for a window in Tk.

https://tcl.tk/man/tcl8.6/TclCmd/variable.htm

In this example I make a bunch of variables and forget to keep a handle to the variable. I use a call to tk to get a list of all variables that match the pattern "PY_*" and use these names to get the variable values.

import tkinter as tk

root = tk.Tk()
tk.Entry(root, textvariable=tk.StringVar(root, "One")).pack()
tk.Entry(root, textvariable=tk.IntVar(root, 1)).pack()
tk.Entry(root, textvariable=tk.DoubleVar(root, 1.0)).pack()

for var in root.tk.call("info", "vars", "PY_*"):
    print(var, type(var), root.tk.globalgetvar(var))

Output:
PY_VAR0 <class '_tkinter.Tcl_Obj'> One
PY_VAR1 <class '_tkinter.Tcl_Obj'> 1
PY_VAR2 <class '_tkinter.Tcl_Obj'> 1.0