import PySimpleGUI as sg

import random

BAR_WIDTH = 50

BAR_SPACING = 75

EDGE_OFFSET = 3

GRAPH_SIZE = (500,500)

DATA_SIZE = (500,500)

graph = sg.Graph(GRAPH_SIZE, (0, 0), DATA_SIZE)

layout = [[sg.Text('Bar graphs using PySimpleGUI')],

[graph],

[sg.Button('OK')]]

window = sg.Window('Window Title').Layout(layout)

while True:

event, values = window.Read()

graph.Erase()

if event is None:

break

for i in range(7):

graph_value = random.randint(0, 400)

graph.DrawRectangle(top_left=(i * BAR_SPACING + EDGE_OFFSET, graph_value),

bottom_right=(i * BAR_SPACING + EDGE_OFFSET + BAR_WIDTH, 0), fill_color='blue')

graph.DrawText(text=graph_value, location=(i*BAR_SPACING+EDGE_OFFSET+25, graph_value+10))