GUI_combobox_widget.py

'''
May 2017
@author: Burkhard A. Meier
'''
#======================
# imports
#======================
import tkinter as tk
from tkinter import ttk

# Create instance
win = tk.Tk()   

# Add a title       
win.title("Python GUI")  

# Modify adding a Label
a_label = ttk.Label(win, text="A Label")
a_label.grid(column=0, row=0)

# Modified Button Click Function
def click_me(): 
    action.configure(text='Hello ' + name.get())
#     print(number)
#     print(number.get())

# Changing our Label
ttk.Label(win, text="Enter a name:").grid(column=0, row=0)

# Adding a Textbox Entry widget
name = tk.StringVar()
name_entered = ttk.Entry(win, width=12, textvariable=name)
name_entered.grid(column=0, row=1)                          # column 0

# Adding a Button
action = ttk.Button(win, text="Click Me!", command=click_me)   
action.grid(column=2, row=1)                                # <= change column to 2

ttk.Label(win, text="Choose a number:").grid(column=1, row=0)
number = tk.StringVar()
number_chosen = ttk.Combobox(win, width=12, textvariable=number)
number_chosen['values'] = (1, 2, 4, 42, 100)
number_chosen.grid(column=1, row=1)                         # <= Combobox in column 1
number_chosen.current(0)

name_entered.focus()      # Place cursor into name Entry
#======================
# Start GUI
#======================
win.mainloop()