Display All PNG Files of Your Current Folder with Tkinter-CodePudding

Today i was Trying to Display All .png files in my current Directory In a GUI With Python and Tkinter but The Code Was Not Wroking in a Way That i expected It only Displays The Last Image of the Folder and The Space for Other Images Was Blank.

# Importing Essentials
import os
from tkinter import Tk, Label, PhotoImage

# Initialize Tk root Class
root = Tk()

# Set Default Size of Our Tkinter Window - (WidthxHeight)
root.geometry("200x910")

# Set Minimum Size of Our Window - (Width, Height)
root.minsize(350, 200)

# Add a Label
WelcomeLabel = Label(text="All Images of This Folder")
WelcomeLabel.pack()

# Get All PNG Files in a List name pngFiles
pngFiles = []
for item in os.listdir():
    if item.endswith(".png"):
        pngFiles.append(item)

# Display All The PNG files to our GUI Screen
for file in pngFiles:
    photoLoaded = PhotoImage(file=file)
    mainImageLabel = Label(image=photoLoaded)
    mainImageLabel.pack()

# Run The MainLoop
root.mainloop()

CodePudding user response：

With the current code you are overwriting your photoLoaded with every loop. Instead you have can pack these photoLoaded in a list. Additionally working with grids is recommended when working with multiple items.

both things are implemented in the code below:

# Importing Essentials
import os
from tkinter import Tk, Label, PhotoImage

# Initialize Tk root Class
root = Tk()

# Set Default Size of Our Tkinter Window - (WidthxHeight)
root.geometry("200x910")

# Set Minimum Size of Our Window - (Width, Height)
root.minsize(350, 200)

# Add a Label
WelcomeLabel = Label(text="All Images of This Folder")
WelcomeLabel.grid(row=0)

# Get All PNG Files in a List name pngFiles
pngFiles = []
for item in os.listdir():
    if item.endswith(".png"):
        pngFiles.append(item)
print(pngFiles)
# Display All The PNG files to our GUI Screen
i = 0
pics = []
for file in pngFiles:
    pics.append(PhotoImage(file=file))
    Label(root, image=pics[i]).grid(row=i   1)
    i  = 1

# Run The MainLoop
root.mainloop()

CodePudding user response：

In tkinter the images must have references in memory, you cannot overwrite and reuse them, my solution is to make a list using pathlib, and then create the labels

If you display an image inside a function, then make sure to keep reference to the > image object in your Python program, either by storing it in a global variable or > by attaching it to another object.