I’m trying to create an app for work, but I’m new to Tkinter. I want the company’s logo to show up in the top left corner. However, all I can get to show up is a blank grey box. It is worth noting that this is an image with a transparent background, however, I was able to get that to show up before when my code was not organized into classes. The image size should also not be a problem. I resized it specifically to fit in the frame that I am using.
Blank grey box

I’ve tried this several different ways: using a Canvas widget, and using a Label widget. However, neither of these work. When I use the Canvas widget, all that shows up is a blank grey box. I get nothing at all out of the label widget.

My code is below. The exact same code was working when the program wasn’t organized into classes. But, I decided that an incomprehensible stream of code isn’t the best when building out an app.

I only pasted the main class and the logo class here. There are others, but they are not relevant to what I am currently doing.

from tkinter import *
from tkinter import ttk
from PIL import ImageTk,Image

class MainApp(Tk):
    def __init__(self, title, size):
        super().__init__()

        #Main Setup
        self.title(title)
        self.geometry(f"{size[0]}x{size[1]}")
        self.minsize(size[0],size[1])

        #Main Frames
        self.logo = Logo(self)
        self.left = Left(self)
        self.right = Right(self)
        self.content = Content(self)

        self.columnconfigure(1, weight=6)
        self.columnconfigure(0, weight=0)
        self.columnconfigure(2, weight=0)
        self.rowconfigure(1, weight=6) 
        self.rowconfigure(0, weight=0)

        self.mainloop()

class Logo(ttk.Frame):
    def __init__(self, parent):
        super().__init__(parent)
        
        self = ttk.Frame(parent, borderwidth=5, relief="ridge", width = 1000, height = 50)

        unipart = Canvas(self, width = 171, height = 50)
        self.grid(row=0,column=0, columnspan=3, rowspan=1, sticky=("N", "S", 'E', 'W'))

        image = Image.open("Py GUI\unipart-logo.png")
        unipart = ImageTk.PhotoImage(image)

        self.label=Label()
        self.label['image'] = unipart
        self.label.grid(column=0, row=0, columnspan=1, rowspan=1, sticky=("S"))

        # unipart = ttk.Label(self)
        # img = ImageTk.PhotoImage(file='Py GUI\unipart-logo.png')
        # unipart['image'] = img
        # unipart.grid(column=0, row=0, columnspan=1, rowspan=1)