tkinter_imageBrowserTest.py

# forum link: https://www.fxp.co.il/showthread.php?t=21189240
from tkinter import filedialog
import tkinter as tk
from PIL import ImageTk, Image
import os

# create the basic window
app = tk.Tk()
app.title("Image")
app.geometry('500x500')
app.resizable(False, False)

# space for our image on Tkinter frame
canvas = tk.Canvas(
    app,
    width = app.winfo_screenwidth()-50,
    height = app.winfo_screenheight()-50
)

# the open button
btn1 = tk.Button(
    app,
    text='Click to Open File',
    command=lambda: showphoto(openfn())
)
btn1.pack(fill=tk.X)
canvas.pack()
print("canvas is packed")

def openfn():
    filetypes = (
        ('Image files', ['*.jpg','*.jpeg','*.png','*.bmp']),
        ('All files', '*.*')
    )

    filename = filedialog.askopenfilename(
        title='Open a file',
        #initialdir='/',
        initialdir=os.environ['USERPROFILE'],
        filetypes=filetypes
    )
    return filename

def showphoto(image_path):
    global image
    print("image_path is: " + image_path)
    image = ImageTk.PhotoImage(Image.open(f'{image_path}'))
    #canvas.insert(1.0, image)
    canvas.create_image(1,1,anchor=tk.constants.NW,image=image)

# run the application
app.mainloop()