I am new in python and I am using python 3.5 version. I want to add photo to python, and here's the code I wrote:

from tkinter import *
win=Tk()
win.title("Python Image")canvas=Canvas(win,width=500,height=500)
canvas.pack()my_image=PhotoImage(file="C:\\Users\\Public\\Pictures\\Sample Pictures\\Desert.jpg")
canvas.create_image(0,0,anchor=NW,image=my_image)win.mainloop()

But when I run it, the following error occurred:

Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:04:45) [MSC v.1900 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> 
================ RESTART: C:\Users\LABE-2\Desktop\rakibul.py ================
Traceback (most recent call last):File "C:\Users\LABE-2\Desktop\rakibul.py", line 8, in <module>my_image=PhotoImage(file="C:\\Users\\Public\\Pictures\\Sample Pictures\\Desert.jpg")File "C:\Users\LABE-2\AppData\Local\Programs\Python\Python36-32\lib\tkinter\__init__.py", line 3539, in __init__Image.__init__(self, 'photo', name, cnf, master, **kw)File "C:\Users\LABE-2\AppData\Local\Programs\Python\Python36-32\lib\tkinter\__init__.py", line 3495, in __init__self.tk.call(('image', 'create', imgtype, name,) + options)
_tkinter.TclError: couldn't recognize data in image file "C:\Users\Public\Pictures\Sample Pictures\Desert.jpg"
>>> 

Photoimage can natively only load png and pgm&ppm images (http://effbot.org/tkinterbook/photoimage.htm).

You can load other image formats via PIL. For python3 use Pillow like this:

from PIL  import Image, ImageTk
from tkinter import Tk,Canvas,NW
win=Tk()
win.title("Python Image")canvas=Canvas(win,width=500,height=500)
canvas.pack()# use your path here ...
my_image = ImageTk.PhotoImage(Image.open(r"some.jpg"))
canvas.create_image(0,0,anchor=NW,image= my_image )win.mainloop()

You could have found all this information in NorthCats answer to How do I insert a JPEG image into a python Tkinter window? as well.