Python Forum

Hello:
Sorry for my bad english.
I am a beginner of python.
I have made an application in python3 in windows 10 with tkinter and it works perfectly for me.
In Ubuntu 18.04 with python3 version 3.6.5 I get an error. I have tried with raspberry pi 3 with python3 version 3.5.3 and I have the same error.



This is the script:


import tkinter
from tkinter import *
import os

raiz=tkinter.Tk()
raiz.title("Ver png")
raiz.config(bg="White")

# medida ventana
w = raiz.winfo_screenwidth()
h = raiz.winfo_screenheight()

raiz.geometry("%dx%d+0+0" % (w, h))

# Bloqueo cambio tamaño pantalla
raiz.resizable(width=False, height=False)

directorio=os.path.dirname(__file__)
print(w,h,directorio)

Imagenfondo0=PhotoImage(file=directorio+"/Hydrisgrande.png")
canvas=tkinter.Canvas(raiz,width=w,height=h,bg="white")
canvas.place(x=1,y=1)
image = canvas.create_image(1, 1, anchor=NW, image=Imagenfondo0)



This is the error:

================ RESTART: /home/pi/Hydris/python/verimagen.py ================
1824 984 /home/pi/Hydris/python
Traceback (most recent call last):
File "/home/pi/Hydris/python/verimagen.py", line 21, in <module>
Imagenfondo0=PhotoImage(file=directorio+"/Hydrisgrande.png")
File "/usr/lib/python3.5/tkinter/__init__.py", line 3406, in __init__
Image.__init__(self, 'photo', name, cnf, master, **kw)
File "/usr/lib/python3.5/tkinter/__init__.py", line 3362, in __init__
self.tk.call(('image', 'create', imgtype, name,) + options)
_tkinter.TclError: couldn't open "/home/pi/Hydris/python/Hydrisgrande.png": no such file or directory

Thank you in advance for trying to help me

Your image must be in the same folder with your script.

Python says that there is no file named /home/pi/Hydris/python/Hydrisgrande.png. You can check this in the file system. It is not a programming problem.

I'm sorry .. I forgot to say that the png file is in the same directory where the script is.

is the extension png or PNG ?

You have to pay attention to upper / lower case.

It is all written correctly

I've made a test, saved your script in /tmp, copied an image to tmp (named it Hydrisgrande.png)

and it works from my IDE, but not from Terminal.

You forgot raiz.mainloop() at the end.

import tkinter
from tkinter import *
import os

raiz=tkinter.Tk()
raiz.title("Ver png")
raiz.config(bg="White")

# medida ventana
w = raiz.winfo_screenwidth()
h = raiz.winfo_screenheight()

raiz.geometry("%dx%d+0+0" % (w, h))

# Bloqueo cambio tamaño pantalla
raiz.resizable(width=False, height=False)

directorio=os.path.dirname(__file__)
print(w,h,directorio)

Imagenfondo0=PhotoImage(file=directorio+"/Hydrisgrande.png")
canvas=tkinter.Canvas(raiz,width=w,height=h,bg="white")
canvas.place(x=1,y=1)
image = canvas.create_image(1, 1, anchor=NW, image=Imagenfondo0)
raiz.mainloop()

in Terminal, this works for me

import tkinter
from tkinter import *
import os

raiz=tkinter.Tk()
raiz.title("Ver png")
raiz.config(bg="White")

# medida ventana
w = raiz.winfo_screenwidth()
h = raiz.winfo_screenheight()

raiz.geometry("%dx%d+0+0" % (w, h))

# Bloqueo cambio tamaño pantalla
raiz.resizable(width=False, height=False)

directorio=os.path.dirname(__file__)
print(w,h,directorio)

picFile = "./Hydrisgrande.png"
Imagenfondo0=PhotoImage(file=picFile)
canvas=tkinter.Canvas(raiz,width=w,height=h,bg="white")
canvas.place(x=1,y=1)
image = canvas.create_image(1, 1, anchor=NW, image=Imagenfondo0)
raiz.mainloop()

---

use

directorio=os.path.dirname(os.path.abspath(__file__))

that works for me in both(IDE and Terminal)