python - How to make SMTPHandler not block -

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i installed local smtp server , used logging.handlers.smtphandler log exception using code:

import logging import logging.handlers import time gm = logging.handlers.smtphandler(("localhost", 25), 'info@somewhere.com', ['my_email@gmail.com'], 'hello exception!',) gm.setlevel(logging.error) logger.addhandler(gm) t0 = time.clock() try:     1/0 except:     logger.exception('testest') print time.clock()-t0

it took more 1sec complete, blocking python script whole time. how come? how can make not block script?

here's implementation i'm using, based on this gmail adapted smtphandler.
took part sends smtp , placed in different thread.

import logging.handlers import smtplib threading import thread  def smtp_at_your_own_leasure(mailhost, port, username, password, fromaddr, toaddrs, msg):     smtp = smtplib.smtp(mailhost, port)     if username:         smtp.ehlo() # tls add line         smtp.starttls() # tls add line         smtp.ehlo() # tls add line         smtp.login(username, password)     smtp.sendmail(fromaddr, toaddrs, msg)     smtp.quit()  class threadedtlssmtphandler(logging.handlers.smtphandler):     def emit(self, record):         try:             import string # tls add line             try:                 email.utils import formatdate             except importerror:                 formatdate = self.date_time             port = self.mailport             if not port:                 port = smtplib.smtp_port             msg = self.format(record)             msg = "from: %s\r\nto: %s\r\nsubject: %s\r\ndate: %s\r\n\r\n%s" % (                             self.fromaddr,                             string.join(self.toaddrs, ","),                             self.getsubject(record),                             formatdate(), msg)             thread = thread(target=smtp_at_your_own_leasure, args=(self.mailhost, port, self.username, self.password, self.fromaddr, self.toaddrs, msg))             thread.start()         except (keyboardinterrupt, systemexit):             raise         except:             self.handleerror(record)

usage example:

logger = logging.getlogger()  gm = threadedtlssmtphandler(("smtp.gmail.com", 587), 'bugs@my_company.com', ['admin@my_company.com'], 'error found!', ('my_company_account@gmail.com', 'top_secret_gmail_password')) gm.setlevel(logging.error)  logger.addhandler(gm)  try:     1/0 except:     logger.exception('fffffffffffffffffffffffuuuuuuuuuuuuuuuuuuuuuu-')

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