Logging to a SMTPHandler

[mattiaverga]

I've followed the docs at https://docs.pylonsproject.org/projects/pyramid/en/latest/narr/logging.html to configure logging with a StreamHandler handler to log message to the console.
I now want to add another handler to send errors to an email, so I've added this to the config.ini:

[handler_smtp]
class = logging.handlers.SMTPHandler
level = ERROR
formatter = generic
mailhost = ***
fromaddr = ***@***.org
toaddrs = ***@***.org
subject = server error

However it doesn't work:

TypeError: SMTPHandler.__init__() missing 4 required positional arguments: 'mailhost', 'fromaddr', 'toaddrs', and 'subject'

Does anyone have any idea how it is supposed to be configured?

[luhn]

Cookiecutter uses stdlib’s logging config https://docs.python.org/3/howto/logging.html#configuring-logging It looks like you need to use args and kwargs in your ini rather than directly setting mailhost et al. Something like: [handler_smtp] class = logging.handlers.SMTPHandler level = ERROR formatter = generic kwargs = {‘mailhost’: ‘***’, ‘fromaddr’: ‘***’} — Theron

…

On Jun 18, 2025, at 9:56 AM, Mattia Verga ***@***.***> wrote: I've followed the docs at https://docs.pylonsproject.org/projects/pyramid/en/latest/narr/logging.html to configure logging with a StreamHandler handler to log message to the console. I now want to add another handler to send errors to an email, so I've added this to the config.ini: [handler_smtp] class = logging.handlers.SMTPHandler level = ERROR formatter = generic mailhost = *** fromaddr = ***@***.org toaddrs = ***@***.org subject = server error However it doesn't work: TypeError: SMTPHandler.__init__() missing 4 required positional arguments: 'mailhost', 'fromaddr', 'toaddrs', and 'subject' Does anyone have any idea how it is supposed to be configured? — Reply to this email directly, view it on GitHub <#3784>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAL7LRN4MROXM2M55PU2MBT3EGK3DAVCNFSM6AAAAAB7TVTLH6VHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZYGQ3DSMRYHE>. You are receiving this because you are subscribed to this thread.

[mmerickel]

It's much jankier than that - the trick is to use the args key to literally pass the args directly to the SMTPHandler. Here is a template I have:

args = (('{{ env.SMTP_HOST }}', {{ env.SMTP_PORT }}), '{{ env.SMTP_ERROR_SENDER }}', ['{{ env.SMTP_ERROR_TO }}'], '{{ env.SMTP_ERROR_SUBJECT }}', ('{{ env.SMTP_USERNAME }}', '{{ env.SMTP_PASSWORD }}'){% if env.SMTP_TLS | bool %}, (){% endif %})

So basically:

args = (('host', 'port'), 'sender', ['recipient1', 'recipient2'], 'subject', ('username', 'password'), ())

[mmerickel]

@luhn just taught me about kwargs being an option, I'd probably try that first. :-)

[mattiaverga]

thanks, I'll try