命令停止無限循環？

Question

我正在開發一個圖形界面，我希望能夠在發送後暫停或取消該文件。 有三個按鈕（發送，暫停&停止），我已經完成了發送按鈕的功能，現在我必須定義兩個按鈕暫停和取消的功能，請問我該怎麼辦？ 這裏是節目

def moh(): 


# Open grbl serial port 
s = serial.Serial('/dev/ttyS0',115200) 

# Open g-code file 

f = open(file_path.get(), "r"); 

# Wake up grbl 
s.write("\r\n\r\n".encode('utf8')) 
time.sleep(2) # Wait for grbl to initialize 
s.flushInput() # Flush startup text in serial input 

# Stream g-code to grbl 
for line in f: 
    l = line.strip() # Strip all EOL characters for consistency 
    print ('Sending: ' + l) 
    s.write((l + '\n').encode("utf8")) # Send g-code block to grbl 
    grbl_out = s.readline().decode("utf8") # Wait for grbl response with carriage return 
    print (' : ' + grbl_out) 

# Wait here until grbl is finished to close serial port and file. 
raw_input(" Press <Enter> to exit and disable grbl.") 

# Close file and serial port 
f.close() 
s.close() 

b1= Button(Outil, text ="Send",background='White', command=moh) 

感謝所有

Answer 1

該命令用於終止無限循環中斷（）