add datetime.time.now() for consistency

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

BPO	8902
Nosy	@malemburg, @rhettinger, @ronaldoussoren, @abalkin, @ezio-melotti, @bitdancer

^{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: ```python assignee = 'https://github.com/abalkin' closed_at = created_at = labels = ['easy', 'type-feature', 'library'] title = 'add datetime.time.now() for consistency' updated_at = user = 'https://bugs.python.org/techtonik' ``` bugs.python.org fields: ```python activity = actor = 'berker.peksag' assignee = 'belopolsky' closed = True closed_date = closer = 'rhettinger' components = ['Library (Lib)'] creation = creator = 'techtonik' dependencies = [] files = [] hgrepos = [] issue_num = 8902 keywords = ['easy'] message_count = 11.0 messages = ['107122', '107166', '107191', '107192', '107331', '118216', '162455', '162460', '162461', '221909', '221946'] nosy_count = 7.0 nosy_names = ['lemburg', 'rhettinger', 'ronaldoussoren', 'belopolsky', 'techtonik', 'ezio.melotti', 'r.david.murray'] pr_nums = [] priority = 'low' resolution = 'rejected' stage = 'resolved' status = 'closed' superseder = None type = 'enhancement' url = 'https://bugs.python.org/issue8902' versions = ['Python 3.5'] ```

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

There is: datetime.date.today() datetime.datetime.today() datetime.datetime.now([tz])

But no: datetime.time.now([tz])

[abalkin]

Anatoly,

Didn't you just recently complain about the large number of functions in datetime module? (bpo-7584)

datetime.datetime.now().time() seems adequate to me.

What is your use case?

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

What is your use case?

>>> from datetime import now, today
>>> now()
datetime.time ...
>>> today()
datetime.date ...

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

Didn't you just recently complain about the large number of functions in datetime module?

About verbosity of datetime API to be exact, so it is a ratio of (API functions + required docs)/user code that makes required stuff done.

[abalkin]

Anatoly,

msg107191 belongs to bpo-8903, not here and it is not a use case, but rather a demonstration of how the proposed feature would work.

My question is why would an application need current time without current date? I feel providing time.now() may lead so people to call date.today() and time.now() separately instead of datetime.now() leading to interesting bugs.

One think I would consider an improvement over the current situation, would be to rename date.today() to date.now(). There are too many ways to spell the same thing:

date.today()
datetime.today()
datetime.now().date()

and no easy way to write a "how long ago" function that would work for both date and datetime:

def ago(t):
    t.now() - t

[abalkin]

I need to correct myself: datetime.today() is not an alternative spelling of date.today(), but rather a function returning current datetime which subtly different from datetime.now().

[abalkin]

Closing for the lack of interest. Proposed time.now() is already available as datetime.now().time(). No use case justifying any improvement in this area was presented.

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

I'd say no consensus was reached due to lack of participation. My enthusiasm was killed by the bpo-8903 resolution.

My opinion is that: datetime.time.now() is much better than: datetime.datetime.now().time()

[9432cd65-9f88-4bc6-8ad6-72e5ab1c730d]

And I certainly don't agree with you that usability changes in API are not use cases.

[abalkin]

I would like to bring this issue to some conclusion. Here is the summary:

Pro:

datetime.time.now() is shorter than datetime.datetime.now().time()

Cons:

1. date, time = datetime.date.today(), datetime.time.now() is attractive, but wrong.

2. time detached from date is a strange object with limited support in datetime module (no timedelta arithmetics, bpo-17267; tzinfo issues; etc.)

3. No compelling use cases have been presented.

[rhettinger]

For the reasons listed by others, marking this as closed/rejected.