Python Tkinter remove/delete Image from Label

Question

I have a label with an image, and a button which should update the label / delete the image in the label, so I can put a new image into the same label via label.config.

I tryed to use something like that: whenever you click on the button the it should remove the image with label.config(image = None) but it doesnt work, if I load new images into the label the old ones are still there:

    # here is the label initialized 
    global brand_preview
    brand_preview = Label(root, image = None)
    brand_preview.place(x = 10, y = 60)

    # thats the button which have to clear the label image
    self.top_brand = Button(root, text = "clear", bg = "snow3", command=clear_label_image)
    self.top_brand.place(x = 550, y = 60)

    # thats how I load a photoimage into the label
    photoimg_brand = ImageTk.PhotoImage(im_thumb)
    brand_preview.image = photoimg_brand
    brand_preview.config(image = photoimg_brand)

    # Thats how the button works
    def clear_label_image():
        brand_preview.config(image = None)
        brand_preview.image = None

All I want now that if we I click the Button the brand_preview loses the image / the image gets deleted

EDIT: The main issue is solved, but that only works if the button only has to delete the image. If I want to delete and add a new one it doesnt work

def clear_label_image():
    brand_preview.config(image = "")
    photoimg_brand = ImageTk.PhotoImage(im_thumb)
    brand_preview.image = photoimg_brand
    brand_preview.config(image = photoimg_brand)

Anaesthesia

Please post a minimal example with runnable code that displays the behavior you want to fix. – Tolkan

Are you saving a reference to the new image? In your new code, photoimg_brand will get garbage-collected and disappear as soon as clear_label_image() completes. – Rafter

Answer 1

You're very close - the image parameter just needs an empty string rather than None.

def clear_label_image():
    brand_preview.config(image='')

Rafter

Thanks that works if the Button has to delete it, but somehow if I add new Image after it the old one is again there, thats weird! – Anaesthesia

What do you mean, the old one is there? – Rafter

if the Button first has to clean the label and then give it a new image, then the old one comes back / is still there. All in all im trying to create a preview window. We have 2 Buttons that do the same, clean label and display an image on top or bottom of the label. If I click this button it has to remove the top image and update it with a new (the bot image). But I guess I can figure it out alone, you helped me alot already. – Anaesthesia

There should be only 0 or 1 images in the label. I'm not seeing anything like the behavior you're describing. – Rafter

Okay, thats probably my problem, all the code is really long so i tried to post only relevant parts, but I have probably to work with Canvas. Atm I am drawing another label ontop of a label so I have main label + small label on top of the main label. I update the images in the small label with this button, so they appear bottom or top of the main label. – Anaesthesia

Answer 2

After some Googling, I found this solution

def clear_label_image():
    #brand_preview.config(image = None)
    brand_preview.image.blank()
    brand_preview.image = None

This definitely clears the image from the button. I haven't tried changing to a new image.

I just copied it from the Web, and it worked. I created the image with

photoimg_brand = tk.PhotoImage(file='/usr/share/httpd/icons/world1.gif')

I did this with python 2.7, and my only import was import Tkinter as tk

Tolkan

where does blank comes from? Its an unkown attribute – Anaesthesia

@RomanDammer I updated my answer, but I'm sorry to say I don't have very good information for you. I see you used ImageTk to create the PhotoImage. That's probably the difference. – Tolkan

Answer 3

If you are using label to show the image then you can do this:

label.pack_forget()

label should be global

Vorticella

HI katt, welcome on Stack Overflow. Please use proper english. – Cementite

Answer 4

I have a solution using customtkinter.

While initialising the ui, have:

brand_preview = customtkinter.CTkLabel(master=self.frame_center_2, text = '', width = 200, height = 200)

And when you add the image in a later function (if not make another one to update the cover), have:

    urllib.request.urlretrieve(im_thumb, "cover.png") # Downloading image from url
    cover_image = customtkinter.CTkImage(Image.open("cover.png"), size = (250, 250))
    self.cover_label.configure(image = '')
    self.cover_label.configure(image = cover_image)
    self.cover_label.pack(pady = 2, padx = 2, expand = True, fill = 'both')

Lauzon