相关疑难解决方法(0)

我是Python的新手,并试图为我的for循环实现一个多处理模块.

我有一个存储在img_urls中的Image url数组,我需要下载并应用一些Google愿景.

if __name__ == '__main__':

    img_urls = [ALL_MY_Image_URLS]
    runAll(img_urls)
    print("--- %s seconds ---" % (time.time() - start_time)) 

这是我的runAll()方法

def runAll(img_urls):
    num_cores = multiprocessing.cpu_count()

    print("Image URLS  {}",len(img_urls))
    if len(img_urls) > 2:
        numberOfImages = 0
    else:
        numberOfImages = 1

    start_timeProcess = time.time()

    pool = multiprocessing.Pool()
    pool.map(annotate,img_urls)
    end_timeProcess = time.time()
    print('\n Time to complete ', end_timeProcess-start_timeProcess)

    print(full_matching_pages)


def annotate(img_path):
    file =  requests.get(img_path).content
    print("file is",file)
    """Returns web annotations given the path to an image."""
    print('Process Working under ',os.getpid())
    image = types.Image(content=file)
    web_detection …

升级到OS10.14后，使用时出现此错误 Httparty

    response = HTTParty.get('http://api.stackexchange.com/2.2/questions?site=stackoverflow')
objc[4182]: +[__NSPlaceholderDictionary initialize] may have been in progress in another thread when fork() was called.
objc[4182]: +[__NSPlaceholderDictionary initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.

export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES在启动Rails控制台之前，我已经尝试 过了。

但这没有用。