Difficulty decoding image with base64 library-CodePudding

I'm having trouble decoding an image when I import it from another file. I have four .py files to make two buttons. In the first, on line 21, the button works and brings the image, in the second, on line 28, which is imported from another file, it appears as a button but without an image. How can I resolve this?

lab.py

import tkinter as tk
import base64
from imagens import *
from cores import *
from widgets import *


class Janela(Images):
    def __init__(self) -> None:
        self.images_base64()
        self.tamJanela()

    def tamJanela(self):
        self.janela_doMenu = tk.Tk()
        janela = self.janela_doMenu
        # janela.state('zoomed')
        janela.title('Disk Gás Gonçalves')
        janela.configure(background=preto_claro)
        janela.geometry("%dx%d" % (janela.winfo_screenwidth(), janela.winfo_screenheight()))

        # Here the code works ###############################################################
        self.img_icoName = tk.PhotoImage(data=base64.b64decode(self.editUser))
        self.rotulo_nome2 = tk.Button(master=janela, image=self.img_icoName, activebackground='#00FA9A', bg='#4F4F4F',
        highlightbackground='#4F4F4F', highlightcolor='#4F4F4F')
        self.rotulo_nome2.grid(row=0, column=0)
        
        # Here the code does not work #######################################################
        # I'm importing from widgets.py #####################################################
        Botoes(janela)

        janela.minsize(1200, 640)

        janela.mainloop()

Janela()

widgets.py

import tkinter as tk
import base64
from imagens import *
from cores import *


class Botoes(Images):

    def __init__(self, local) -> None:
        self.images_base64()
        self.local = local
        self.bt()
        
    def bt(self):
        self.img_icoName = tk.PhotoImage(data=base64.b64decode(self.editUser))
        self.rotulo_nome2 = tk.Button(master=self.local, image=self.img_icoName, activebackground='#00FA9A', bg='#4F4F4F',
        highlightbackground='#4F4F4F', highlightcolor='#4F4F4F')
        self.rotulo_nome2.grid(row=1, column=0)

cores.py

preto_claro = '#4F4F4F'
verde_médio = '#00FA9A'
vermelho_salmão = '#FA8072'
azul_seleção = '#F0FFFF'
verde_limão = '#00FF00'
branco_gelo = '#EDEBE6'

imagens.py

import base64


class Images:

    def images_base64(self):
        self.addUser = 'iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABmJLR0QA/wD/AP gvaeTAAAACXBIWXMAAFiVAABYlQHZbTfTAAAAB3RJTUUH5gkWFg4SATq7CQAADcJJREFUaN7NmXtwXNV9x7/n3Pe9e   Vyut5LUkyy/AWECJE0MShwTjOAEPQ5hJoFBa7MGQaRNwOy1NO0070yGBkk4GGxqSQM1kajKTkAyQmpCEeMzAFEJiPDxs2ZKxHitptbva5717n6d/yJYtJCzJspv NDvaPffec /nfH /c3 /cwiWaE/v3AJCCIIgAGNsxjFCKALGwFGCP3v8v5d6q3MaOZ L/vPeLfB9BoBB4HkYYR03/es 8s2tl0mSJAmEENJs2s6Df7Oz eOf/ALNpg1KKe56Yv//H5Cn7rkBjuNCUWR8e/eL5Kt3bWrXdf2qkKZeqShylyDwUQJCbccp1Gr1N8qV6v4Hn3y576Edmxkv8Lhj94t/fJCndm6B67hoa2vBSG6sPRGPfSWdStyaSiVWh8O6psgyeJ4DAYHruSiXa/7QcO7dweHcv Vy4/siEcPhOA537vnFHw/kqXtugOt62PGDX2HvfVuv7ci0/lN3V/aTLakEL0rCma5OxwmZ m03bRwf KD0/tH bx452r nPZP2ps4DKCW48wLFDreQk57euQWu6 GqK9bhmq74dT0rOvesu2z11alUgnIcPee1vMAjFgkrvh/02rYzXCiUhu/be6B588dW4o5vfwOd5VH87HfH/29APnd5FuGQhqHh3JruruzudZeuvlzXQ2dGfx6jHAdD10KSKH4qGglv2trbGanVGgPvHXjdvGP3i iaeAM/e3NpMPOCPL1zCwRKMZIbk7o6s99Yd9nqbdFoZMEQp00QBKSScTXdkuzUQ9p1ruumi6Xy6 / 8tmGHzD8fImq0PlOUBQFqqKgNZ1a355Jb0vEoouGAAFACAghkBUZncs7hDWrVtyWiEfvfO6Fl8/rFbBoENM0ceujP0XY0D/b0pJso9yCvPEsCIJ6rYFcbhyO406DtbW2CC0tyVs3f aaDM9xePqeLRcXhDHgoZuv0nQ9dJUR0hY3eoSgWqnh MggiqSKIycHUK3WABCIooB4LNqjaeoaVZEBf0kc4OclpQSapuqqqnQIorAwtyIEge8jP1HEaKWAtt4MUtkE8icnMPCHYazil0PRVIQ0VZVlaXkkEka9YV5cRSilEHheEXg RCmdflAQAsYYguDUhzEEQQDbdlCYKOL94/0oBBV0XdOFls4kCCFo6WxBuDuCXD4PMAZB5Hme4xIbru5dmhwLUQRgABhjp6UgBJZpIV8owrSbCHCqGUAABp8E4HUB8ctTSLTHwYv8DBVblidx7IPjcB0XlFBCKOG1z30SeG5pb/t5QfyAwXbchuO4pcCfGvG wQ gZw0k02nwAgewKVTKUYiKCEmRQDk6BXC2KzIGUZVAJQrHdeH5vu/7QfWtx3548RVhAUO5Uqs1GuYJ23E USxNQs8a6L6ya0qGWSHDTos4Z3 EEBCOwPcDmKZl2U37xNDw6JJB5o0RMIJ7t3 lWas13qhUa17TdRCKh075Ejsz6tOfhd3Y8zyUy9WResN8v7HEQF8QSMeGAC/sewuBXJ/IT0w4QeCfzgfP3whBo95AsToxZizzK3LSQ2tvcHFBmE 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        self.editUser = 'iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABmJLR0QA/wD/AP gvaeTAAAACXBIWXMAAFiVAABYlQHZbTfTAAAAB3RJTUUH5gkWFhApZHBt8gAADaRJREFUaN7NmXtwVNd9x7/n3Nfu3ae0Wu1qtXpLICNhG/AjDrEhAQS4pHadGbedcRPHIAxx/ODRJs6jbrHjtHHrqRPjENu1HXDbqRvbk IgwHVcB49pDY4BSwgJCb2FHvvevXf37t57T/8QUAN6rBB0 pu5M3tn73l8fr/fOfd7fpfgKthrm9dO/ofBAbyO 1/YfzWGmdbIXCZPCYFumuB5DrLVigK3C7fefCNswRK8/3YLxkJhpNMZMMZAKcX9P2/5/wPy2uY7QQiDYZhwOOw49lm7UBbwl9ps1nmSJFUKPF8IgMvl9DElrR6PRGKtpQG/mkikIAg8vrnr2kRnViCvbV6L8VAYvmIvBofOisFS/xc8hQX3ejwFywrczjJZlmVBEHgCEC2bzUUisdDw2bH9o2Pjz61bs L4W3v3QxSEawKTN8hrm9cikUzB6ylEIpkK H3ehyvKS78RDJaUuBwO8AJ3WXemaSIajeFU55ljPb392 rn1fz2ROspCIIA0zSvaqrlBbLnoTvx0cfHcPttN0FNZ6rKgiU/WVBf90eBkmKOchzA2DQjEKSSKRz7rP337R1d65tf2n3sjW0PQVFUUErBcTz 7Pm9cwbh8nnoD5fUoKzUj6SieCrKS39y4/UL/iQQ8FFC8guoKEmQrVa/YRiLjv/m38uUlKqNjoVGrFarSSnB20dO/9 A3LWkBi//cj9Z9eWbHmxsmP9osNSfV7vPmyxbid/nDXq9nmUWSWqilGRD4cgxQeCNu2 uw6 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I tried to create a button by importing the base64 image from another file. There are two buttons in the application, one works and the image appears, the other does not work and the image does not appear. I would like to make the second one work.

All the code will generate this image. The bottom button that doesn't show the image is in the widgets.py file I don't know why, but when I import it, it doesn't work.

(https://img.codepudding.com/202211/d0bc15e1eef64d0991c449bf45596b06.png)

Thank you in advance for your attention and I apologize if something was wrong or out of standard, my English is not very good.

CodePudding user response：

It is because there is no variable referencing the instance of Botoes(), so it will be garbage collected (so as the image inside it).

Just use a variable to store the instance of Botoes():

class Janela(Images):
    def __init__(self) -> None:
        self.images_base64()
        self.tamJanela()

    def tamJanela(self):
        self.janela_doMenu = tk.Tk()
        janela = self.janela_doMenu
        # janela.state('zoomed')
        janela.title('Disk Gás Gonçalves')
        janela.configure(background=preto_claro)
        janela.geometry("%dx%d" % (janela.winfo_screenwidth(), janela.winfo_screenheight()))

        # Here the code works ###############################################################
        self.img_icoName = tk.PhotoImage(data=base64.b64decode(self.editUser))
        self.rotulo_nome2 = tk.Button(master=janela, image=self.img_icoName, activebackground='#00FA9A', bg='#4F4F4F',
        highlightbackground='#4F4F4F', highlightcolor='#4F4F4F')
        self.rotulo_nome2.grid(row=0, column=0)

        # need a variable to store the instance of Botoes
        # to avoid garbage collection
        botoes = Botoes(janela)

        janela.minsize(1200, 640)

        janela.mainloop()

Result: