python logbook mailhandler

logbook_mailhandler.py

#!/usr/bin/env python
# Small logbook snippet addressing some confusion on record injection

import logbook

handler = logbook.MailHandler("test@example.com", ['recipient@example.com'],
                              format_string=u'''Subject: [BCBB] {record.extra[run]} \n\n {record.message}''', level='INFO', bubble = True)

log = logbook.Logger("mailtest.log")

runname = "foobar"

with handler.applicationbound():
    with logbook.Processor(lambda record: record.extra.__setitem__('run', runname)):
        log.info("Hello world")

According to the documentation, you can inject to:

record.extra['whatever']

In contrast, you should refer to:

record.extra[whatever]

On the format string (note the lack of ' ') :-S