with open('report.html' , 'r') as f:msg = MIMEText(f.read() , _subtype='html' , _charset='utf-8')msg['Subject'] = Header(subject, 'utf-8')msg['date'] = datetime.now().strftime('%Y-%m-%d %H-%M-%S')smtp = smtplib.SMTP()smtp.connect(smtpserver)smtp.login(username, password)smtp.sendmail(sender,receiver , msg.as_string())smtp.quit()

from time import sleep, ctimedef loop0():print('start loop 0 at:', ctime())sleep(1)print('loop 0 done at:', ctime())def loop1():print('start loop 1 at:', ctime())sleep(1)print('loop 1 done at:', ctime())def main():print('start:', ctime())loop0()loop1()print('all end:', ctime())if __name__ == '__main__':main()

import threading
from time import sleep
from datetime import datetimeloops = [2, 4]def loop(nloop , nsec):print('start loop ' , nloop , ' at : ' , datetime.now())sleep(nsec)print('end  loop  ' , nloop , ' at : ' , datetime.now())def main():print('start main  ' , datetime.now())threads = []nloops = range(len(loops))for i in nloops :t = threading.Thread(target=loop , args=(i , loops[i]))threads.append(t)for i in nloops:threads[i].start()      #  开启线程for i in nloops:threads[i].join()       #  等待线程终止print('end  main  ', datetime.now())if __name__ == '__main__':main()

import threading
from time import sleep
from datetime import datetimeloops = [4, 2]
format_date = '%Y-%m-%d-%H-%M-%S'class ThreadFunc(object):def __init__(self, func, args, name):self.name = nameself.func = funcself.args = argsdef __call__(self):apply(self.func , self.args)def loop(nloop , nsec):print('start loop ' , nloop , ' at : ' , datetime.now().strftime(format_date))sleep(nsec)print('end  loop  ' , nloop , ' at : ' , datetime.now().strftime(format_date))def main():print('start  main ' , datetime.now())threads = []nloops = range(len(loops))for i in nloops:t = threading.Thread(target=ThreadFunc(loop , (i, loops[i]) , loop.__name__))threads.append(t)for i in nloops:threads[i].start()for i in nloops:threads[i].join()print('end main   ' , datetime.now().strftime(format_date))if __name__ == '__main__':main()