# -*- coding: utf-8 -*-
import tkinter as tk
import tkinter.ttk as ttk
root = tk.Tk()
root.title("tk30.py")
root.geometry("300x250")
#####################################
frame_left = tk.Frame(root)
frame_left.pack(side = tk.LEFT, fill = tk.Y)
sb = tk.Scrollbar(frame_left)
sb.pack(side = tk.RIGHT, fill = tk.Y)
var = tk.StringVar()
alist = tk.Listbox(frame_left, yscrollcommand = sb.set)
for line in range(100):
    alist.insert(tk.END, "Line Number: {}".format(line))
alist.pack(fill = tk.BOTH)

sb.config(command = alist.yview)

bt = tk.Button(frame_left, text = 'button', command = 
    lambda: lb.config(text = str(alist.curselection())))
bt.pack()
lb = tk.Label(frame_left, text = 'label')
lb.pack()

frame_right = ttk.Frame(root)
frame_right.pack(side = tk.RIGHT, fill = tk.Y)
tsb = ttk.Scrollbar(frame_right)
tsb.pack(side = tk.RIGHT, fill = tk.Y)

blist = tk.Listbox(frame_right, yscrollcommand = tsb.set, 
                   selectmode = tk.MULTIPLE)

for line in range(100):
    blist.insert(tk.END, "Line Number: {}".format(line))
blist.pack(fill = tk.BOTH)

tsb.config(command = blist.yview)

tbt = ttk.Button(frame_right, text = 'button', command = 
    lambda: tlb.config(text = str(blist.curselection())))
tbt.pack()
tlb = ttk.Label(frame_right, text = 'label')
tlb.pack()
#####################################
root.mainloop()