Ufdjrw

Instead of Universal Basic Income, why not Universal Basic NEEDS?

Why does Deadpool say "You're welcome, Canada," after shooting Ryan Reynolds in the end credits?

How could a female member of a species produce eggs unto death?

Brexit - No Deal Rejection

Could the Saturn V actually have launched astronauts around Venus?

SQL Server Primary Login Restrictions

Why do passenger jet manufacturers design their planes with stall prevention systems?

Bash: What does "masking return values" mean?

Provisioning profile doesn't include the application-identifier and keychain-access-groups entitlements

Old race car problem/puzzle

Did CPM support custom hardware using device drivers?

Can the damage from a Talisman of Pure Good (or Ultimate Evil) be non-lethal?

Have researchers managed to "reverse time"? If so, what does that mean for physics?

Good allowance savings plan?

Why did it take so long to abandon sail after steamships were demonstrated?

Humanity loses the vast majority of its technology, information, and population in the year 2122. How long does it take to rebuild itself?

Should we release the security issues we found in our product as CVE or we can just update those on weekly release notes?

Employee lack of ownership

Sword in the Stone story where the sword was held in place by electromagnets

How to answer questions about my characters?

Happy pi day, everyone!

Life insurance that covers only simultaneous/dual deaths

How to simplify this time periods definition interface?

Do I need life insurance if I can cover my own funeral costs?

Pillow & Tkinter doesn't show PNGs with transparency

0

My application was recently working fine, but when I upgraded Python to v3.7.2, which solved another problem I was having, the images are either no longer shown or of poor quality.

After doing some testing, I've concluded that I can display any PNG without transparency, but PNGs with transparency exhibit this problem. I can recreate it with this code:

import tkinter as tk
from PIL import Image, ImageTk

root = tk.Tk()
path = 'png-transparent.png'
img = Image.open(path)
imgtk = ImageTk.PhotoImage(img)
panel = tk.Label(root, image=imgtk).pack()
root.mainloop()

If I use a label to display the image, it doesn't show at all. If I use a button to display the image, which is what I really need to do, it is poor quality (which means not displaying properly, no definition, coarse edges).

They are very small (16x16), but you can see two different icons here, the ones in the boxes are the distorted ones and the ones not in boxes are how they are supposed to look.

Current versions: Python 3.7.2, Pillow 5.4.1, OS X 10.13.6

python-3.x macos tkinter png python-imaging-library

share|improve this question

edited Mar 6 at 19:30

Ste Bunting

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please upload and add a link to the image to your question. Also note that the value assigned to panel will be None because the pack() method doesn't return a value.
  
  – martineau
  Mar 6 at 18:50
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Edited the post to add an image.
  
  – Ste Bunting
  Mar 6 at 19:09
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm, are you sure that image has some transparent areas because it doesn't look like it does in my image editor (Photoshop)—it appears to be a 24-bit RGB image (i.e. has 3 x 8-bit channels) as opposed to a 4-channel RGBA image (one that also has an "alpha" channel).
  
  – martineau
  Mar 6 at 19:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Edited to show original un-edited correct images. The distorted buttons are screenshots.
  
  – Ste Bunting
  Mar 6 at 19:32
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Both of those two original images seem to work properly for me. I'm using Python 3.7.2, Pillow 5.4.1, on Windows 7 Pro. Seems like I've seen numerous questions here about difficulties using Python on Macos (because the OS comes with some version of it), so perhaps the upgrade you did messed-up your custom Python installation.
  
  – martineau
  Mar 6 at 19:52
  
  

  
  
  
  

 | 
show 2 more comments

0

My application was recently working fine, but when I upgraded Python to v3.7.2, which solved another problem I was having, the images are either no longer shown or of poor quality.

After doing some testing, I've concluded that I can display any PNG without transparency, but PNGs with transparency exhibit this problem. I can recreate it with this code:

import tkinter as tk
from PIL import Image, ImageTk

root = tk.Tk()
path = 'png-transparent.png'
img = Image.open(path)
imgtk = ImageTk.PhotoImage(img)
panel = tk.Label(root, image=imgtk).pack()
root.mainloop()

If I use a label to display the image, it doesn't show at all. If I use a button to display the image, which is what I really need to do, it is poor quality (which means not displaying properly, no definition, coarse edges).

They are very small (16x16), but you can see two different icons here, the ones in the boxes are the distorted ones and the ones not in boxes are how they are supposed to look.

Current versions: Python 3.7.2, Pillow 5.4.1, OS X 10.13.6

python-3.x macos tkinter png python-imaging-library

share|improve this question

edited Mar 6 at 19:30

Ste Bunting

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please upload and add a link to the image to your question. Also note that the value assigned to panel will be None because the pack() method doesn't return a value.
  
  – martineau
  Mar 6 at 18:50
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Edited the post to add an image.
  
  – Ste Bunting
  Mar 6 at 19:09
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm, are you sure that image has some transparent areas because it doesn't look like it does in my image editor (Photoshop)—it appears to be a 24-bit RGB image (i.e. has 3 x 8-bit channels) as opposed to a 4-channel RGBA image (one that also has an "alpha" channel).
  
  – martineau
  Mar 6 at 19:23
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Edited to show original un-edited correct images. The distorted buttons are screenshots.
  
  – Ste Bunting
  Mar 6 at 19:32
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Both of those two original images seem to work properly for me. I'm using Python 3.7.2, Pillow 5.4.1, on Windows 7 Pro. Seems like I've seen numerous questions here about difficulties using Python on Macos (because the OS comes with some version of it), so perhaps the upgrade you did messed-up your custom Python installation.
  
  – martineau
  Mar 6 at 19:52
  
  

  
  
  
  

 | 
show 2 more comments

My application was recently working fine, but when I upgraded Python to v3.7.2, which solved another problem I was having, the images are either no longer shown or of poor quality.

After doing some testing, I've concluded that I can display any PNG without transparency, but PNGs with transparency exhibit this problem. I can recreate it with this code:

import tkinter as tk
from PIL import Image, ImageTk

root = tk.Tk()
path = 'png-transparent.png'
img = Image.open(path)
imgtk = ImageTk.PhotoImage(img)
panel = tk.Label(root, image=imgtk).pack()
root.mainloop()

If I use a label to display the image, it doesn't show at all. If I use a button to display the image, which is what I really need to do, it is poor quality (which means not displaying properly, no definition, coarse edges).

They are very small (16x16), but you can see two different icons here, the ones in the boxes are the distorted ones and the ones not in boxes are how they are supposed to look.

Current versions: Python 3.7.2, Pillow 5.4.1, OS X 10.13.6

python-3.x macos tkinter png python-imaging-library

share|improve this question

edited Mar 6 at 19:30

Ste Bunting

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

import tkinter as tk
from PIL import Image, ImageTk

root = tk.Tk()
path = 'png-transparent.png'
img = Image.open(path)
imgtk = ImageTk.PhotoImage(img)
panel = tk.Label(root, image=imgtk).pack()
root.mainloop()

share|improve this question

edited Mar 6 at 19:30

Ste Bunting

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

share|improve this question

edited Mar 6 at 19:30

Ste Bunting

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119

asked Mar 6 at 18:35

Ste BuntingSte Bunting

14119