hp files). But still, GNU M4 is
a decent piece of technology.
Agreed. The terror that most people feel when hearing "m4" is because
m4 was associated with sendmail, not because m4 was inherently awful.
It has problems, but you'd only encounter them when doing something
_very_ abs
n Graham's Number but still
inconceivably ginormous.)
You don't even need to go that high. Even a run-of-the-mill googol
(10^100) is far larger than the total number of elementary particles in
the observable Universe.
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On 07/20/2012 02:05 AM, Virgil Stokes wrote:
On 20-Jul-2012 10:27, Steven D'Aprano wrote:
The fellow looked relived and said "Oh thank god, I thought you said
*million*!"
How does this relate to the python list?
It's also a seriously old joke.
--
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On 07/20/2012 03:28 AM, BartC wrote:
"Erik Max Francis" wrote in message
news:gskdnwoqpkoovztnnz2dnuvz5s2dn...@giganews.com...
On 07/20/2012 01:11 AM, Steven D'Aprano wrote:
On Thu, 19 Jul 2012 13:50:36 -0500, Tim Chase wrote:
I'm reminded of Graham's Number, whi
as syntactic significance.
Thank you!
PEP 8 says this is bad form. What do you think?
Where does it say that?
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Giampaolo Rodolà wrote:
Il 21 gennaio 2012 22:13, Erik Max Francis ha scritto:
The real reason people still use the `while 1` construct, I would imagine,
is just inertia or habit, rather than a conscious, defensive decision. If
it's the latter, it's a case of being _way_ too defensi
ite a different thing, not simply a Kronecker delta extended to the
reals. Kronecker deltas are used all the time over the reals; for
instance, in tensor calculus. Just because the return values are either
0 or 1 doesn't mean that their use is incompatible over reals (as
integers
onsist of mostly definitions. Modules can
interact with each other, be called recursively, etc., and so at an
arbitrary point saying, "break out of this module" doesn't have a great
deal of meaning.
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There is _never_ no hope left. Remember.
-- Louis Wu
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eak".
To me, too -- too bad it doesn't work:
c:\temp>\python32\python early_abort.py
File "early_abort.py", line 7
return
^
SyntaxError: 'return' outside function
Nor should it. There's nothing to return out of.
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Eric Snow wrote:
On Tue, Jun 14, 2011 at 5:51 PM, Erik Max Francis wrote:
Ethan Furman wrote:
To me, too -- too bad it doesn't work:
c:\temp>\python32\python early_abort.py
File "early_abort.py", line 7
return
^
SyntaxError: 'return' outside funct
lookup where the keys are functions,
and execute the value. Even then, unless there are quite a lot of
cases, this may be overkill.
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Chris Angelico wrote:
On Fri, Jun 17, 2011 at 8:07 AM, Erik Max Francis wrote:
It's quite consistent on which control structures you can break out of --
it's the looping ones.
Plus functions.
No:
>>> def f():
... break
...
File "", line 2
SyntaxError:
Chris Angelico wrote:
On Fri, Jun 17, 2011 at 9:29 AM, Erik Max Francis wrote:
Chris Angelico wrote:
On Fri, Jun 17, 2011 at 8:07 AM, Erik Max Francis wrote:
It's quite consistent on which control structures you can break out of --
it's the looping ones.
Plus functions.
N
`. If you want to
conditionally execute some code, use `if`. If you want to indicate an
exceptional condition, raise an exception.
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t you're
just being difficult.
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Winners are men who have dedicated their whole lives to winning.
-- Woody Hayes
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Ian Kelly wrote:
On Thu, Jun 16, 2011 at 7:21 PM, Erik Max Francis wrote:
Neither makes sense. `break` exits out of looping structures, which the
top-level code of a module most certainly is not.
Why does that matter? It seems a bit like arguing that the `in`
keyword can't be use
Ian Kelly wrote:
On Thu, Jun 16, 2011 at 10:24 PM, Erik Max Francis wrote:
True. So let's use `in` to represent breaking out of the top-level code of
a module. Why not, it's not the first time a keyword has been reused,
right?
The point is, if it's not obvious already from
Steven D'Aprano wrote:
On Thu, 16 Jun 2011 22:20:50 -0700, Erik Max Francis wrote:
[...]
Yes, which could be rephrased as the fact that `break` and `continue`
are restricted to looping control structures, so reusing `break` in this
context would be a bad idea. You know, kind of like the
ero sig figures value is ever useful.)
Yes. They're order of magnitude estimates. 1 x 10^6 has one
significant figure. 10^6 has zero.
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igure would be an order of magnitude estimate only.
These aren't usually done in the "e" scientific notation, but it would
be something like 10^3 (if we assume ^ is exponentiation, not the Python
operator).
c^2 is 9 x 10^16 m^2/s^2 to one significant figure. It's 10^17 m^2/
Mel wrote:
Erik Max Francis wrote:
Chris Angelico wrote:
On Tue, Jun 28, 2011 at 12:56 PM, Steven D'Aprano
wrote:
Zero sig figure: 0
That's not really zero significant figures; without further
qualification, it's one.
Is 0.0 one sig fig or two?
Two.
(Just vaguely curiou
t 2 x 10^-8 kg, or on the order of 10^-8 kg (zero
significant figures). To convert to energy, multiply by c^2. c = 3 x
10^8 m/s, so c^2 = 9 x 10^16 m^2/s^2, or about 10^17 m^2/s^2, so the
Planck energy is on the order of 10^9 J. That's a calculation to zero
significant figures.
--
Mel wrote:
Erik Max Francis wrote:
Mel wrote:
By convention, nobody ever talks about 1 x 9.97^6 .
Not sure what the relevance is, since nobody had mentioned any such thing.
If it was intended as a gag, I don't catch the reference.
I get giddy once in a while.. push things to limits
f.append(obj.__name__)
return obj
__all__ = AllList()
@__all__
def api(): pass
@__all__
def db(): pass
@__all__
def input(): pass
@__all__
def output(): pass
@__all__
def tcl(): pass
Bravo!
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San Jose,
quency. In all bases.
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They love too much that die for love.
-- (an English proverb)
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nan}
{nan}
It's fundamentally because NaN is not equal to itself, by design.
Dictionaries and sets rely on equality to test for uniqueness of keys or
elements.
>>> nan = float("nan")
>>> nan == nan
False
In short, don't do that.
--
Erik Max Francis &&
Albert Hopkins wrote:
On Sun, 2011-05-29 at 00:41 +0100, MRAB wrote:
1.0 == 1.0
True
float("nan") == float("nan")
False
I can't cite this in a spec, but it makes sense (to me) that two things
which are nan are not necessarily the same nan.
It's part of t
Ron Adam wrote:
> When you call a method of an instance, Python translates it to...
>
> leader.set_name(leader, "John")
It actually translates it to
Person.set_name(leader, "John")
--
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; formatting , so I've taken a stab at it:
BOTEC at
http://www.alcyone.com/software/botec/
contains a class called SI which does this formatting (and supports all
SI prefixes).
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San Jose, CA,
research on Google?
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The people are to be taken in very small doses.
-- Ralph Waldo Emerson
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ing if I (and nobody else) answered
his question and just rudely pointed him to Google. But since I
actually answered his question, looks to me like someone just wanted to
stand on his soapbox today.
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made him change his mind? When the debates raged over PEP 308,
he seemed pretty dead set against it (at least by proxy) ...
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a search engine won't be the most
practical way to do research. This was _certainly_ not one of those cases.
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No mistaking / Just
the text, but then discards it. You
meant:
for badWord in badWords:
textToFilter = textToFilter.replace(badWord, '<)!&%(#&)%>')
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Matt Garrish wrote:
> Even if you weren't an incredibly offensive and petulant poster, what makes
> you think anyone would write a script from you?
Because in addition to being offensive and petulant, he's also an idiot.
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Erik Max Francis && [EMAIL PROTECTED] &
=None): self.value = value
...def get(self): return self.value
...def set(self, value): self.value = value
...
>>> one = Container(1)
>>> myDictionary = {}
>>> myDictionary['a'] = one
>>> myDictionary['b'] = one
>>> myDictionary['b&#x
he pbmplus library, and so forth.
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Every human being is a problem in search of a solution.
-- Ashley Montagu
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Andy Leszczynski wrote:
> So how does it correspond to other piece of the code:
>
> 2 def notfound(self, pagename):
> 3 return dict(pagename=pagename, data="", new=True)
>
> new is a boolean here?
It comes through as a CGI query.
--
Erik Max Francis
ield 0
x = 1
while True:
yield x
yield -x
x += 1
... which is also not a bad demonstration of how the integers are
countably infinite.
--
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S
tr.split('_| '), but this gave me:
>
> ['this_NP is_VL funny_JJ']
>
> It is not splitted at all.
Use re.split:
>>> re.split('_| ', s)
['this', 'NP', 'is', 'VL', 'funny', 'JJ']
Madhusudan Singh wrote:
> Thanks. Now, a slightly more complicated question.
>
> Say I have two lists of floats. And I wish to generate a list of floats that
> is a user defined function of the two lists.
result = [sqrt(x**2 + y**2) for x, y in zip(xs, ys)]
--
Erik
chr(x) for x in range(32) + [124])
aNewString = aString.translate(IDENTITY_MAP, BAD_MAP)
Note that ASCII 31 is also a control character (US).
--
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generates a ValueError.
Did you want to only split once at most? Then it's s.split('|', 1).
Did you want to assign the first element to the first variable and the
rest to the next? Then it's x = s.split('|'); a, b = x[0], x[1:].
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executed in it would have no effect on
the state of another.
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Success and failure are equally disastrous.
-- Tennessee Wi
Help on function index in module string:
index(s, *args)
index(s, sub [,start [,end]]) -> int
Like find but raises ValueError when the substring is not found.
--
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terminals respond by beeping. Since, when you're logged into a remote
machine, it's your terminal that's displaying the output of your remote
session, that's why you hear the beep on your local machine.
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is. Look up XML DOM.
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An ounce of hypocrisy is worth a pound of ambition.
-- Michael Korda
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Xah Lee wrote:
> This is my learning notes on Haskell. I call it a-Haskell-a-day.
Another day, another community to completely piss of, huh, Xah?
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s can't handle these, of course).
If it's a relatively straightforward class where the entire state is
exposed through the constructor, then a friendly repr is possible.
Otherwise, it's not, and trying to otherwise do so may just be confusing.
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Erik Max Francis &&
on the circumstances. There is no uniform solution here.
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We must all hang together, or, most assuredly, we will all hang
sepa
aum wrote:
> The Vaults of Parnassus site:
> http://www.vex.net/parnassus/
> has been down for several days, with no resolution available for the
> vex.net domain.
It's working fine here.
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pically, in C or C++, I would use an enum for that:
> enum OBJECT_STATE
> {
> opened, closed, error
> }
OPENED, CLOSED, ERROR = range(3)
object.state = OPENED
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now why it's doing this as I'm trying to
> open a JPEG, and not a tiff. I tried with a .bmp with similar results.
> Any ideas? Thanks!
Install libtiff.
--
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David T wrote:
> Individuals, and perhaps groups of individuals are the creators of
> works.
When someone pays you to create a work, then they own the copyright, not
you. It's called work for hire.
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Mike Meyer wrote:
> Further, recent evidence is that this is no longer true in that
> country, assuming it ever was.
Oh, please. Take the political crap elsewhere.
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San Jose, CA, USA &
Bruno Desthuilliers wrote:
> Depends on the country's laws and the exact agreement.
Work for hire is part of the Berne convention.
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ame. Often, in fact, they are not.
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Life is painting a picture, not doing a sum.
-- Oliver Wendell Holmes, Jr.
--
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s already easy enough to do this
within the language, by just assigning it a value, even if it's an
integer from range/xrange or a new sentinel like object().
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have paid you if you didn't (implicitly) transfer the
copyright to them. So copyright is just as relevant whether it's a work
for hire or not.
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Micah Elliott wrote:
> On Nov 21, David Isaac wrote:
>
>> What's the good way to produce a cumulative sum?
>
>>>> import operator
>>>> x = 1,2,3
>>>> reduce(operator.add, x)
> 6
Or just sum(x).
--
Erik Max Francis && [EMAIL P
ltin method. The usual way is to just wrap a class
around two dictionaries, one for mapping keys to values and the other
for mapping values back to keys.
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* taken seriously
> using names that aren't what you'd call a "real name".
The fact that it obviously isn't always true without exception doesn't
mean it's never true. Or did that not occur to you?
--
Erik Max Francis && [EMAIL PROTECTED] &
ut it looks like only
genetic algorithms are supported, not full genetic programming. Is this
not the case?
I've been planning on releasing my stack-based genetic programming
system Psi (implemented in Python) at some point in the future, FYI.
--
Erik Max Francis && [EMAIL PROTE
d in. You can't teach all things
simultaneously; I'm not sure creating a genetic programming (or genetic
algorithms) system that's useful to "newbies" (whatever that means) is
even a useful goal in and of itself.
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Erik Max Francis && [EMAIL PROTECTED] &a
tic algorithm system, not genetic a programming
system, hence his response. It was only my interpretation of his
introductory comment that led anyone to believe otherwise.
--
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enetic algorithm).
Recent developments, with stack-based languages like those used by
Spector, have allowed the introduction of types naturally into genetic
programming, which has a great deal of promise for allowing even more
involves solutions to complex problems.
--
Erik Max Francis
iquette. ;-)
His "points" have about the same legitimacy as banging on the keyboard
until it breaks and then crying for an hour. At least if he did that,
we'd have to hear from him less.
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Sa
rea. Thanks again for the comments.
Sure thing. Obviously I'll post an announcement here when it's ready.
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Heaven and
ts), but beyond intermixing ideas they really aren't related.
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I never could have predicted / That I'd feel this way
malv wrote:
> Thank you kindly, Erik.
Sure thing.
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It is only the poor who are forbidden to beg.
-- Anatole France
dead on arrival.
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There's a reason why we / Keep chasing morning
-- Sandra St. Victor
--
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and edit your settings to select just the 'peps' topic.
Maybe someone could roll this into an RSS feed?
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There'
back of my mind that languages that can easily support massive
(especially automatic) parallelization will have their day in the sun,
at least someday.
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Peter Hansen wrote:
So why duplicate the posts by posting them to the newsgroups?
Because he's a well-known pest.
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Yes I
[since 0.2]
- 0.3, 2005 Jan 15. Separate transfers from maneuvers; support
Oberth maneuvers.
- 0.2.1, 2005 Jan 8. Various collected modifications.
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he need to post it here for?
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Make it come down / Like molasses rain
-- Sandra St. Victor
--
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Xah Lee wrote:
Python has iteritems() and enumerate() to be used in for loops.
can anyone tell me what these are by themselves, if anything?
are they just for idiom?
thanks.
You would be funnier if you weren't so incompetent.
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memory at once.
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Can I lay with you / As your wife
-- India Arie
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;= 0: ...
If you want to keep a running count, you can use .count, which will
count the number of substrings in the line.
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I would have liked to have seen Montana.
-- Capt. Vasily Borodin
--
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Steve Holden wrote:
Would there, I wonder, be any enthusiasm for a "Best Xah Lee impression"
prize at PyCon?
I imagine standing in a corner, facing the wall, and screaming
incoherently at the top of your lungs would be guaranteed at least
second place.
--
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someone finding his posts
and not seeing the related discussion and refutations is a big risk.
For the rest of us, we can just killfile the threads easily enough.
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already being handled, at low levels of annoyance that
can be avoided by anyone with a killfile or mail filter.
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Divorces are made
.
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War is like love, it always finds a way.
-- Bertolt Brecht
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, I thought of using shelve, but looking at
> the restrictions (record size + potential collisions) I feel I should study
> my options a bit further before I get started.
Why not just use native Python data structures and pickle them?
--
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Philippe C. Martin wrote:
> Well that would be shelve I guess ... with the restrictions I mentioned.
I was talking about pickle, not shelve.
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Philippe C. Martin wrote:
> You mean pickling a dictionnary of 5000/16K objects ?
Yes. You said speed was not an issue; pickling only 5000 objects, each
no more than 16 kB, is easily handled by any remotely modern machine
(and even plenty which are not very modern).
--
Erik Max Fran
to this limitation, short of
reworking things so that these self-referenced objects aren't used as
dictionary keys?
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You'll learn / Life is worth it / Watch the tables turn
-- TLC
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bruno modulix wrote:
> Err... don't you spot any useless code here ?-)
>
> (tip: dict.items() already returns a list of (k,v) tuples...)
But it doesn't return a tuple of them. Which is what the tuple call
there does.
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same sort of thing which Brits try and imitate when
> they want to suggest a snake-oil salesman.
And due to overcorrection, typically do a really bad job of it :-).
--
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s, so you shouldn't have any
problem finding something both you and the kids can use, like UCBLogo
for Unix or MSWLogo for Windows (based on UCBLogo). If you want to go
that route, there's even a set of computer science texts based on Logo,
called _Computer Science Logo Style_ by Bria
ncf wrote:
> Eh, just figured it'd be worth noting...map, filter, and reduce should
> be possible with the extended list syntaxes. Well, filter I know is,
> but hte others /should/ be possible.
>
> filter(lambda: <>, <>)
> [some_var for some_var in <> if
before I found Python. I
definitely use lambda, map, filter, and reduce, and will miss them when
they're gone.
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Heaven
The distinction is rhotic vs. non-rhotic accents, by the way; non-rhotic
accents drop the _r_s. The latter example is usually an example of
overcorrection.
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ul projects got approved.
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Heaven ne'er helps the man who will not act.
-- Sophocles
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Sean McIlroy wrote:
> if that's the case then list
> comprehensions and/or "first class functions" are likely to be the next
> target.
Slippery slope arguments are logical fallacies, you know.
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in fact
it's quite clear). So at least there's something to that, but I don't
follow it the whole way. But removing reduce is just removing
functionality for no other reason, it seems, than spite.
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nce)
vs.
[str(x) for x in sequence]
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In Heaven all the interesting people are missing.
-- Friedrich Nietzsche
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g the reasons for
removing them as builtins, I really can't understand the motivation for
removing them entirely, not even as a standard library module.
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oduct fulfill 90% (estimate of course) of reduces
> use cases. It may actually be as high as 99% for all I know. Or it may
> be less. Anyone care to try and put a real measurement on it?
Well, reduce covers 100% of them, and it's one function, and it's
already there.
--
t handles all the required use cases and replacing it with _two_
functions that don't. Since it's doubling the footprint of the reduce
functionality, arguments about avoiding pollution are red herrings.
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