[issue9208] SMTPHandler in the logging module does not handle unicode strings

[simon04]

simon04 added the comment:

I don't see why/how this should be fixed in Python 3.

Using the example from msg109621 and Python 3.5.0, I get:
--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.5/logging/handlers.py", line 985, in emit
smtp.sendmail(self.fromaddr, self.toaddrs, msg)
  File "/usr/lib/python3.5/smtplib.py", line 846, in sendmail
msg = _fix_eols(msg).encode('ascii')
UnicodeEncodeError: 'ascii' codec can't encode character '\xe9' in position 
108: ordinal not in range(128)
Call stack:
  File "/tmp/x.py", line 8, in 
LOG.error(u"accentu\u00E9")
Message: 'accentué'
Arguments: ()

The problem is that an SMTP message is constructed and non-ASCII characters are 
not escaped in SMTPHandler.emit. A robust fix would be to use 
email.mime.text.MIMEText instead:

msg = MIMEText(msg)
msg['Subject'] = self.getSubject(record)
msg['From'] = self.fromaddr
msg['To'] = ",".join(self.toaddrs)

--
nosy: +simon04

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[issue25411] SMTPHandler in the logging module fails with unicode strings

[simon04]

New submission from simon04:

This relates to the unresolved issue9208 (Python 2).

SMTPHandler fails when receiving unicode strings.

Example (from msg109621):
import logging,logging.handlers
smtpHandler = logging.handlers.SMTPHandler(
mailhost=("smtp.free.fr",25),
fromaddr="f...@free.fr", toaddrs="t...@free.fr",
subject=u"error message")
LOG = logging.getLogger()
LOG.addHandler(smtpHandler)
LOG.error(u"accentu\u00E9")

… fails:
--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.5/logging/handlers.py", line 985, in emit
smtp.sendmail(self.fromaddr, self.toaddrs, msg)
  File "/usr/lib/python3.5/smtplib.py", line 846, in sendmail
msg = _fix_eols(msg).encode('ascii')
UnicodeEncodeError: 'ascii' codec can't encode character '\xe9' in position 
108: ordinal not in range(128)
Call stack:
  File "/tmp/x.py", line 8, in 
LOG.error(u"accentu\u00E9")
Message: 'accentué'
Arguments: ()

As discussed in msg252928 and msg252931, EmailMessage/send_message should be 
used instead to resolve this issue.

Patch attached.

--
files: SMTPHandler-unicode-v1.patch
keywords: patch
messages: 253043
nosy: simon04
priority: normal
severity: normal
status: open
title: SMTPHandler in the logging module fails with unicode strings
versions: Python 3.4, Python 3.5, Python 3.6
Added file: http://bugs.python.org/file40787/SMTPHandler-unicode-v1.patch

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[issue25411] SMTPHandler in the logging module fails with unicode strings

[simon04]

Changes by simon04 :


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nosy: +r.david.murray

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[issue25411] SMTPHandler in the logging module fails with unicode strings

[simon04]

simon04 added the comment:

I omitted the date header w/o intent. Basically because I couldn't quickly 
figure out how to set it.

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