Question

我有一些代码要求用户导入文件，然后使用翻译器对其进行加密。当我尝试这个时，程序会挂起大量文件或任何文件。我尝试使用线程和进度条来解决这个问题，但我已经走到了尽头 - 我不知道如何更新进度条，这将与需要花费的时间相对应加密文件。这就是我到目前为止所做的：

import tkinter 
from tkinter import * 
from tkinter import ttk 
from tkinter.ttk import * 
from tkinter.filedialog import askopenfile 
from tkinter.filedialog import askopenfilename
from tkinter.scrolledtext import *
import threading

letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

encryption_code = 'LFWOAYUISVZMNXPBDCRJTQEGHK'

letters += letters.lower() 
encryption_code += encryption_code.lower()

enc = dict(zip(letters,encryption_code))

window = tkinter.Tk()

style = ttk.Style(window)
style.configure("BW.TLabel")

import_frame = tkinter.Frame(window)

def import_txt():
    global import_list    
    file_name = askopenfilename(filetypes=[("Text files","*.txt")]) 

    import_list = [] 

    with open(file_name, 'r') as f:
        import_list = f.readlines()
        progressbar.pack()
        but1.pack()
        encrypttxt.pack()
    f.close() 

def encrypt_txt():
    global letters
    global encryption_code
    global import_list
    global translated
    progressbar.start()
    pre = "".join(import_list)
    translated = "".join([i.translate(str.maketrans(letters, encryption_code)) for i in import_list]) 
    display_txt.insert('insert', translated) 
    precrypt.insert('insert', pre)
    display_txt.pack(side=RIGHT)
    precrypt.pack(side=LEFT)

def end():
    if t.isAlive() == False:
        progressbar.stop()
        t.join()

toplevel = tkinter.Toplevel(window)   
progressbar = ttk.Progressbar(toplevel, orient = HORIZONTAL, mode = "determinate")
t = threading.Thread(target=encrypt_txt)
but1 = ttk.Button(window, text= "Stop", command=end)

display_txt = tkinter.scrolledtext.ScrolledText(import_frame)
encrypttxt = ttk.Button(import_frame, text="Encrypt", command=encrypt_txt)
precrypt = tkinter.scrolledtext.ScrolledText(import_frame)
start = ttk.Button(window, text="Start", command=import_txt)
start.pack()
import_frame.pack()

window.mainloop()

将线程和进度条与函数相结合的麻烦

0 个答案: