[FIXED] How to get index of selected option in Tkinter combobox

Issue

The following code lets me print out the selected value from the Combobox, but I need to print (get) the index number of selected item in the list. How can I do that?

import Tkinter
import tkMessageBox
from Tkinter import *
import ttk
from ttk import *

app = Tk()

def OptionCallBack(*args):
    print variable.get()

variable = StringVar(app)
variable.set("Select From List")
variable.trace('w', OptionCallBack)

so = ttk.Combobox(app, textvariable=variable)
so.config(values =('Tracing Upstream', 'Tracing Downstream','Find Path'))
so.grid(row=1, column=4, sticky='E', padx=10)


app.mainloop()

Solution

Use the current method on the combobox.

import Tkinter
import tkMessageBox
from Tkinter import *
import ttk
from ttk import *

app = Tk()

def OptionCallBack(*args):
    print variable.get()
    print so.current()

variable = StringVar(app)
variable.set("Select From List")
variable.trace('w', OptionCallBack)


so = ttk.Combobox(app, textvariable=variable)
so.config(values =('Tracing Upstream', 'Tracing Downstream','Find Path'))
so.grid(row=1, column=4, sticky='E', padx=10)


app.mainloop()

Answered By - Khristos