# Tk_graphchart.py

# Tk_graphchart.py
from Tkinter import *
import random

root = Tk()

cw = 650
ch = 500

c = Canvas(width=cw, height=ch, background="white")
c.pack()

c.create_line(10, ch, cw, ch)
c.create_line(10, 0, 10, ch)

for a, b in zip(range(100, ch, 100), range(100, 0, -25)):
    c.create_line(0, a, 20, a)
    c.create_text(30, a, text=str(b))

x = 50
y = 70

bars = [random.randint(1, 100) for i in range(12)]
limit = x * len(bars)

while x <= limit:
    for i in bars:
        c.create_rectangle(x, ch-(i*4),
                           y, ch,
                           outline="black",
                           fill="royalblue")
        x += 50
        y += 50

root.mainloop()