Example of logging.formatter with new str.format style

[spacemanspiff2007]

BPO	36532
Nosy	@freddrake, @vsajip, @spacemanspiff2007
PRs	bpo-36532: Example of formatter with new str.format style #12693

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2019-04-06.06:44:03.187>
created_at = <Date 2019-04-05.05:14:14.422>
labels = ['3.8', 'type-feature', '3.7', 'docs']
title = 'Example of logging.formatter with new str.format style'
updated_at = <Date 2019-04-06.06:44:03.186>
user = 'https://github.com/spacemanspiff2007'

bugs.python.org fields:

activity = <Date 2019-04-06.06:44:03.186>
actor = 'spaceman_spiff'
assignee = 'docs@python'
closed = True
closed_date = <Date 2019-04-06.06:44:03.187>
closer = 'spaceman_spiff'
components = ['Documentation']
creation = <Date 2019-04-05.05:14:14.422>
creator = 'spaceman_spiff'
dependencies = []
files = []
hgrepos = []
issue_num = 36532
keywords = ['patch']
message_count = 4.0
messages = ['339470', '339504', '339513', '339526']
nosy_count = 4.0
nosy_names = ['fdrake', 'vinay.sajip', 'docs@python', 'spaceman_spiff']
pr_nums = ['12693']
priority = 'normal'
resolution = None
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue36532'
versions = ['Python 3.7', 'Python 3.8']

[spacemanspiff2007]

It was not quite clear how to use the logging library with the new str.format style so I added an example in the logging cookbook

[vsajip]

But there is an example in the cookbook already:

https://docs.python.org/3/howto/logging-cookbook.html#use-of-alternative-formatting-styles

It's right there in the first code sample in that section.

You might want to amend your change to point to this section from the one where you want to make the change.

[freddrake]

Good catch, Vinay! Thanks.

[spacemanspiff2007]

I was under the impression that this was all it takes to use loggers with the normal string.format syntax.
e.g.:
log.info('{}', 'Test')
Turns out when I tested it I used f-strings in the first parameters - so I got it wrong.
Imho this can be closed and the pr rejected.
Sorry for wasting your time :)