How to get Entry value using PY_VAR0 or PY_VAR1?

Question

I have simple code like this:

from tkinter import *



def _show_value(*pargs):
    print(*pargs)



root = Tk()

entry_var1 = StringVar()
entry_var1.trace(\'w\'         


        

Answer 1

You can do it in two ways.

First, use globalgetvar method of your root window.

def _show_value(*pargs):
    print(*pargs)
    print(root.globalgetvar(pargs[0]))

This, should give you text of respective entry.

Second, and probably more recommended is to pass StringVar references into _show_value, using lambdas for instance, rather then using global variables of Tk:

from tkinter import *



def _show_value(v, *pargs):
    print(*pargs)
    print(v.get())



root = Tk()

entry_var1 = StringVar()
entry_var1.trace('w', lambda *pargs: _show_value(entry_var1, *pargs))

entry_var2 = StringVar()
entry_var2.trace('w', lambda *pargs: _show_value(entry_var2, *pargs))


e1 = Entry(root, textvariable=entry_var1)
e1.pack()

e2 = Entry(root, textvariable=entry_var2)
e2.pack()      


root.mainloop()