無法base64.decode的`的輸出中指定（）`到可變

Question

我想導入的基64編碼的圖形作爲畫布背景來使用。根據documentation，base64.decode需要2個參數：輸入和輸出。我不明白如何將base64.decode()的輸出分配給變量background_image。這些是有問題的兩行代碼：

background_image = base64.decode(background_image.background_image, x.png) 
canvas.create_image(0, 0, image=ImageTk.PhotoImage(file=background_image), anchor=NW) 

這是我簡化程序的版本。

#imported modules 
from tkinter import * 
from PIL import ImageTk, Image 
import base64 

#imported files 
import background_image # a .py file containing the base64 encoded graphic string 

'''...stuff''' 

background_image = base64.decode(background_image.background_image, x.png) 
canvas.create_image(0, 0, image=ImageTk.PhotoImage(file=background_image), anchor=NW) 

'''...more stuff''' 

Answer 1

閱讀the documentation更仔細：

base64.decode(input, output) 

Decode the contents of the binary input file and write the resulting binary data to the output file. input and outputmust be file objects. input will be read until input.read() returns an empty bytes object.

如果有的話，你應該使用base64.b64decode()。

background_image = base64.b64decode(background_image.background_image)