Python中的安全系统线程电子邮件

Question

我有一个用 python 编写的安全程序。它检测何时有人在相机前（机器学习）并向所有者发送一封带有入侵者照片的电子邮件。我的问题是如何线程化电子邮件功能，因为我想在程序发现入侵者时发送照片。现在，如果它发现入侵者，则执行将停止，直到通过电子邮件发送照片。我尝试使用线程模块，但它不起作用（我没有 python 线程的经验）。我只能启动一个线程，但我不知道如何让它用同一个线程发送多张照片。（不创建更多线程）。def send_mail(path):    sender = 'MAIL'    gmail_password = 'PASS'    recipients = ['OWNER']# Create the enclosing (outer) message    outer = MIMEMultipart()    outer['Subject'] = 'Threat'    outer['To'] = COMMASPACE.join(recipients)    outer['From'] = sender    outer.preamble = 'Problem.\n'# List of attachments    attachments = [path]# Add the attachments to the message    for file in attachments:        try:            with open(file, 'rb') as fp:                msg = MIMEBase('application', "octet-stream")                msg.set_payload(fp.read())            encoders.encode_base64(msg)            msg.add_header('Content-Disposition', 'attachment', filename=os.path.basename(file))            outer.attach(msg)        except:            print("Unable to open one of the attachments. Error: ", sys.exc_info()[0])            raise    composed = outer.as_string()# Send the email    try:        with smtplib.SMTP('smtp.gmail.com', 587) as s:            s.ehlo()            s.starttls()            s.ehlo()            s.login(sender, gmail_password)            s.sendmail(sender, recipients, composed)            s.close()        print("Email sent!")    except:        print("Unable to send the email. Error: ", sys.exc_info()[0])        raise

Answer 1

我想您会想要在线程已经发送时更新要发送的照片（不运行带有要发送的目标照片的线程），因此您可以将要发送的照片存储在全局变量中。这是我解决这个问题的方法：

from threading import Thread

import time

def send_email():

    print('started thread')

    global photos_to_send

    while len(photos_to_send) > 0:

        current_photo = photos_to_send.pop(0)

        print('sending {}'.format(current_photo))

        time.sleep(2)

        print('{} sent'.format(current_photo))

    print('no more photos to send ending thread')

photos_to_send = ['photo1.png']

thread1 = Thread(target=send_email, args=())

thread1.start()

photos_to_send.append('photo2.png')

thread1.join()

#started thread

#sending photo1.png

#photo1.png sent

#sending photo2.png

#photo2.png sent

#no more photos to send, ending thread