Question

我正在构建一个GUI，该GUI首先接受来自用户的输入数字并使对应的按钮变为绿色。现在，我运行另一个python脚本，该脚本扫描apriltag（某种QR码）并返回ID，并将其写入到位于同一文件夹中的文件中。我所附的代码包括各个位置的打印语句（“ Done”，“ phew”，“ haha”）。在运行GUI时，首先打印Done命令，然后是phew和haha（多次）。但是，按钮不会将其颜色更改为绿色，而仅在相机检测到apriltag时才更改其颜色。该代码已附加。当我在GUI中按“确定”按钮时，将调用该函数。

我试图包括延迟，也试图使用线程。但是这些方法都不起作用。

import Tkinter
def action3():

    f = open("test.txt","r")          
    data = f.read()
    y = int(str(data))
    f.close()
    f = open("test.txt","w")
    f.write("0")
    f.close()
    x = int(e.get())
    f = open("test.txt","r")
    data = f.read()
    y = int(str(data))
    f.close()
    print("Done")

    if (x == 1):
          b1['bg'] = 'green'
          b2['bg'] = 'white'
          b3['bg'] = 'white'
          b4['bg'] = 'white'
          print("phew")
          #time.sleep(2)

    elif (x == 2):
          b1['bg'] = 'white'
          b2['bg'] = 'green'
          b3['bg'] = 'white'
          b4['bg'] = 'white'
          print("phew")

    elif (x == 3):
          b1['bg'] = 'white'
          b2['bg'] = 'white'
          b3['bg'] = 'green'
          b4['bg'] = 'white'
          print("phew")

    elif (x == 4):
          b1['bg'] = 'white'
          b2['bg'] = 'white'
          b3['bg'] = 'white'
          b4['bg'] = 'green'        
          print("phew")

#time.sleep(5)




   while(y==0):             ##Update y
          f = open("test.txt","r")
          data = f.read()
          y=int(str(data))
          print("Haha")
          f.close()
          time.sleep(2)

##Code for GUI
b1 = Button(window, text="Box1", bg='white', width=30, height=13)
b1.grid(row=1, sticky=W)

b2 = Button(window, text="Box2", bg = 'white', width = 30,height = 13)
b2.grid(row=2, sticky=W)

b3 = Button(window, text="Box3", bg = 'white', width = 30,height = 13)
b3.grid(row=1, column=1, sticky=W)

b4 = Button(window, text="Box4", bg = 'white', width = 30,height = 13)
b4.grid(row=2, column=1, sticky=W)

bget = Button(window, text="OK", bg='pink', width = 10,height = 
2,command=action3)

bget.grid(row=3, column=0, sticky=E)

e = Entry(window)
e.grid(row=3, column=1)

window.mainloop()

卡在GUI中的while循环中

0 个答案: