Tkinter with after and time.sleep

Question

下面的python代碼有一個TKinter gui，用於更新計算函數中的內容（在self.after（）的末尾調用它自己，GUI也有一些滑塊，用戶將能夠調整參數，計算中存在睡眠延遲問題：代碼運行良好，除了time.sleep（1）阻塞的不僅僅是計算1秒，還包括GUI本身：只能每秒移動一次滑塊，然後所有東西都被阻塞一秒鐘。我能做些什麼time.sleep（1）只能讓計算函數進入睡眠狀態，而不是GUI本身？我需要運行計算函數在單獨的線程中？

import Tkinter as tk 
import ttk 
import time 

class GUI(tk.Frame): 
    def __init__(self, master=None): 
     tk.Frame.__init__(self, master) 
     self.pack() 
     self.i=0 
     self.var1 = tk.StringVar() 
     self.var2 = tk.StringVar() 
     self.var3 = tk.StringVar() 
     self.var4 = tk.StringVar() 
     self.var5 = tk.StringVar() 
     self.var6 = tk.StringVar() 
     self.var7 = tk.StringVar() 
     tk.Label(self, textvariable=self.var1,justify='left').pack() 
     tk.Label(self, textvariable=self.var2).pack() 
     tk.Label(self, textvariable=self.var3).pack() 
     tk.Label(self, textvariable=self.var4).pack() 
     tk.Label(self, textvariable=self.var5).pack() 
     tk.Label(self, textvariable=self.var6).pack() 
     tk.Label(self, textvariable=self.var7).pack() 


     p1 = tk.Scale(master, from_=1, to=20, orient=tk.HORIZONTAL).pack() 
     p2 = tk.Scale(master, from_=1, to=20, orient=tk.HORIZONTAL).pack() 
     p3 = tk.Scale(master, from_=1, to=20, orient=tk.HORIZONTAL).pack() 
     p4 = tk.Scale(master, from_=1, to=20, orient=tk.HORIZONTAL).pack() 
     p5 = tk.Scale(master, from_=1, to=20, orient=tk.HORIZONTAL).pack() 

     self.progress = ttk.Progressbar(self, orient="horizontal",length=100, mode="determinate") 
     self.progress.pack() 

    def calculation(self): 
     # complex calculations that last 30 minutes in total 
     self.i += 1 
     time.sleep(1) 
     max=1000 
     self.var1.set("Value1: "+str(self.i)) 
     self.var2.set("Value2: "+str(self.i+100)) 
     self.var3.set("Value3: "+str(self.i+100)) 
     self.var4.set("Value4: "+str(self.i+100)) 
     self.var5.set("Value5: "+str(self.i+100)) 
     self.var6.set("Value6: "+str(self.i+100)) 
     self.var7.set("Value7: "+str(self.i+100)) 
     self.progress["value"] = int(round(self.i*100/max)) 
     #self.update() # no need, will be automatic as mainloop() runs 
     self.after(1, self.calculation) 

app=GUI() 
app.calculation() # start calculations 
app.mainloop() # run gui 

Answer 1

如果你絕對必須使用睡眠，那麼是的，計算應該在另一個線程或另一個進程中完成。