[issue9944] Typo in doc for itertools recipe of consume
New submission from Jon Clements : Very low priority. def consume(iterator, n): "Advance the iterator n-steps ahead. If n is none, consume entirely." # Use functions that consume iterators at C speed. if n is None: # feed the entire iterator into a zero-length deque collections.deque(iterator, maxlen=0) else: # advance to the emtpy slice starting at position n next(islice(iterator, n, n), None) Hardly a show stoppper, and not me worth submitting a patch, but "emtpy" should be "empty". Just thought I'd make note of it before I forgot. -- assignee: d...@python components: Documentation messages: 117339 nosy: d...@python, joncle priority: normal severity: normal status: open title: Typo in doc for itertools recipe of consume versions: Python 2.5, Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3 ___ Python tracker <http://bugs.python.org/issue9944> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8185] re.findall()
Jon Clements added the comment:
Seems consistent to me:
.match, .search and .finditer return a MatchObject whose .group() return the
*entire matched string*. If you use .group(1) you'll get similar results to
.findall() which returns a list of (possibly of tuples) of the captured
groupings.
This is the findall equivalent (using a non-capturing group):
>>> re.findall('a(?:b)?', 'ab')
['ab']
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nosy: +joncle
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[issue15136] Decimal accepting Fraction
New submission from Jon Clements :
I'm not a numeric expert but I was looking at a post on S/O which related to
converting a Fraction to a certain amount of decimal places. I've had a hunt on
the tracker but couldn't find anything relevant, but if I've missed it, I
apologise.
# F=Fraction, D=Decimal classes
If I try num = D( F(5, 7) )
I get: TypeError: Cannot convert Fraction(5, 7) to Decimal
So I do:
>>> D(f.numerator) / D(f.denominator)
Decimal('0.7142857142857142857142857143')
Which I think is the correct result?
I guess my question is - should Decimal do this implicitly for Fraction?
--
components: Library (Lib)
messages: 163397
nosy: joncle
priority: normal
severity: normal
status: open
title: Decimal accepting Fraction
type: enhancement
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[issue15136] Decimal accepting Fraction
Jon Clements added the comment: Mark - I bow to your superiour knowledge here. However, would not a classmethod of .from_fraction be welcome? ie, I could write: d = D.from_fraction(5, 7) Then the documents labour the point about what you've mentioned? Just an idea, but fully realise you're the man best suited to decide, so I'll be happy with whatever you say. -- ___ Python tracker <http://bugs.python.org/issue15136> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15136] Decimal accepting Fraction
Jon Clements added the comment: Not sure what's going on with my machine today: keep sending things to early. I meant: D.from_fraction(F) where if F is not of type Fraction, then the args are used to construct a Fraction - so can use an existing or create one. -- ___ Python tracker <http://bugs.python.org/issue15136> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15136] Decimal accepting Fraction
Jon Clements added the comment:
The more I think about this - the shades of grey kick in.
D.from_fraction(F or creatable F)
Then it would be 'reasonable to assume' for a F.to_decimal() to exist.
Possibly with an optional context argument.
Then, what happens if I do D('2.45') * F(24 / 19)...
I'll leave it to the experts, but have noticed Raymond has ideas for this, but
not yet commented?
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[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
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[issue18925] select.poll.modify is not documented
Jon Clements added the comment: Was looking up epoll.modify and noticed in the docs it's listed as " Modify a register file descriptor." - I believe that should be "Modify a registered file descriptor"... -- nosy: +joncle ___ Python tracker <http://bugs.python.org/issue18925> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23864] issubclass without registration only works for "one-trick pony" collections ABCs.
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[issue24159] Misleading TypeError when pickling bytes to a file opened as text
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