[問題] 多線程可運作但多進程無法

看板Python作者doun (嚕啦嚕啦勒)時間8年前 (2017/03/24 21:51)推噓1(1推 0噓 4→)

留言5則, 1人參與討論串1/1

最近在看網路影片學習使用多線程與多進程時，多線程的程式碼可以順利運作crop_1~crop_4 但在多進程的時候卻感覺會跳過運作程式，我確定有運算到if裡面的程式碼，但process的程式感覺就被跳過了不曉得我是哪裡寫錯多線程時的code: def main(): Job_1 = threading.Thread(target = crop_1,name = 'T1') Job_2 = threading.Thread(target = crop_2,name = 'T2') Job_3 = threading.Thread(target = crop_3,name = 'T3') Job_4 = threading.Thread(target = crop_4,name = 'T4') Job_1.start() Job_2.start() Job_3.start() Job_4.start() Job_1.join() Job_2.join() Job_3.join() Job_4.join() start_x = pyautogui.locateOnScreen(r'C:\Users\start.png')[0] start_y = pyautogui.locateOnScreen(r'C:\Users\start.png')[1] if __name__ == '__main__': img = pyautogui.screenshot() main() 多進程時的code，將執行的程序都放進if下面 if __name__ == '__main__': start_x = pyautogui.locateOnScreen(r'C:\Users\start.png')[0] start_y = pyautogui.locateOnScreen(r'C:\Users\start.png')[1] img = pyautogui.screenshot() Job_1 = Process(target = crop_1) Job_2 = Process(target = crop_2) Job_3 = Process(target = crop_3) Job_4 = Process(target = crop_4) Job_1.start() Job_2.start() Job_3.start() Job_4.start() Job_1.join() Job_2.join() Job_3.join() Job_4.join() -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 27.105.40.31 ※ 文章網址: https://www.ptt.cc/bbs/Python/M.1490363508.A.8B5.html