Typo in f-string example in docs

[csabella]

BPO	32735
Nosy	@vstinner, @ned-deily, @Mariatta, @csabella
PRs	bpo-32735: Fix typo in f-strings example #5464 [3.6] bpo-32735: Fix typo in f-strings datetime format specifier example (GH-5464) #5465

^{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 2018-01-31.22:20:15.293>
created_at = <Date 2018-01-31.20:56:00.741>
labels = ['type-feature', '3.7', 'docs']
title = 'Typo in f-string example in docs'
updated_at = <Date 2018-01-31.23:33:10.094>
user = 'https://github.com/csabella'

bugs.python.org fields:

activity = <Date 2018-01-31.23:33:10.094>
actor = 'ned.deily'
assignee = 'docs@python'
closed = True
closed_date = <Date 2018-01-31.22:20:15.293>
closer = 'Mariatta'
components = ['Documentation']
creation = <Date 2018-01-31.20:56:00.741>
creator = 'cheryl.sabella'
dependencies = []
files = []
hgrepos = []
issue_num = 32735
keywords = ['patch']
message_count = 7.0
messages = ['311371', '311375', '311376', '311379', '311380', '311381', '311389']
nosy_count = 5.0
nosy_names = ['vstinner', 'ned.deily', 'docs@python', 'Mariatta', 'cheryl.sabella']
pr_nums = ['5464', '5465']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue32735'
versions = ['Python 3.6', 'Python 3.7']

[csabella]

On the lexical analysis doc page, in f-strings example, the following example isn't quite right:

>>> f"{today:%b %d, %Y}"  # using date format specifier
'January 27, 2017'

Submitting a patch shortly to use %B instead of %b.

[Mariatta]

Good catch!

I checked my presentation slides (where this example comes from).
It appeared that I meant it as %b, so the output should have been Jan instead of January.

But no strong preference, the idea is to demonstrate how to use the specifier, so %B works too.

[Mariatta]

New changeset b299393 by Mariatta (Cheryl Sabella) in branch 'master':
bpo-32735: Fix typo in f-strings datetime format specifier example (GH-5464)
b299393

[Mariatta]

New changeset 581ce25 by Mariatta (Miss Islington (bot)) in branch '3.6':
bpo-32735: Fix typo in f-strings datetime format specifier example (GH-5464) (GH-5465)
581ce25

[Mariatta]

Thanks!

[vstinner]

@cheryl: I concur with Mariatta, good catch, thanks!

[ned-deily]

New changeset 70e3042 by Ned Deily (Cheryl Sabella) in branch '3.7':
bpo-32735: Fix typo in f-strings datetime format specifier example (GH-5464)
70e3042