" errors?:
https://code.google.com/p/python-graph/issues/list?can=1&q=import+gv&colspec=ID+Type+Status+Priority+Milestone+Owner+Summary&cells=tiles
Bye, Andreas
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a/12698636
2) Try some other Graphviz bindings. A quick search on PyPi gave me:
https://pypi.python.org/pypi/pygraphviz/1.1
https://pypi.python.org/pypi/pydot/1.0.28
https://pypi.python.org/pypi/yapgvb/1.2.0
Bye, Andreas
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Aloha,
richard wrote:
> Dennis Benzinger wrote:
>>Does anybody know of a SVG rendering library for Python?
> Google "python svg"
... to find what?
Whishing a happy day
LOBI
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ning that you can do
anything you can do in Python in C, C++ or Assembler. Just don't tell me
that it is usual to write self-modifying assembler programs that create
an optimized piece of code for combinations of argument types, like
Psyco does.
Andreas
signature.asc
Description: Dies ist ein digital signierter Nachrichtenteil
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Does anyone know of a Python module that is able to sniff the encoding of
text? Please: I know that there is no reliable way to do this but I need
something that works for most of the case...so please no discussion about
the sense of such a module and approach.
Andreas
pgpj27jiq5WgN.pgp
Thanks!
--On 5. Januar 2006 18:21:39 -0600 [EMAIL PROTECTED] wrote:
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pgpyF17uM2CTT.pgp
Description: PGP signature
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Actually, for many things, python -i is more then enough to test and
debug code interactivly. Consider writing a settrace function, that
catches any data and control flow you might be interested.
Andreas
>
> I was disappointed not to see any replies to this.
> I use pdb a lot becau
lty
> in my mind.
> For me, it is mostly useful for understanding flow of
> control and how objects change as that happens. I
> find it easier than constantly modifying the source code.
One question that is often needed is "How did we get to this place?".
Th
d intermediate languages within the compiler might
actually help drastically cutting down on the more severe problem of
code transformation bugs, notwithstanding the relative complexity of
suitable internal type systems.
- Andreas
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to differentiate between both concepts -
pointers are just mutable objects holding other mutable objects
(immutable pointer types exist, but are only interesting if you also
have pointer arithmetics - which, however, is largely equivalent to
arrays, i.e. not particularly relevant either).
words, pointers are essentially just an *aspect* of mutability
>>in lower-level languages.
>
> Again, I disagree: it is posible to have mutability without
> pointers/identity/objects.
OK, if you prefer: it is an aspect of first-class mutability - which is
present in almost a
Darren New wrote:
> Andreas Rossberg wrote:
>
>> Yes, technically you are right. But this makes a pretty weak notion of
>> mutability. All stateful data structures had to stay within their
>> lexical scope, and could never be passed to a function.
>
> Not reall
mming, usually based on deep unification, brings by far the worst
incarnation of aliasing issues to the table.
- Andreas
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7;should be 2') is questionable, IMHO. I think the above
code has it right in this case rather than your python version (after all c isA
CountedClass, isn't it?).
cheers,
aa
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var2)
var2
thanks in advance,
greets
Andreas Huesgen
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er, I would not recommend this last solution unless you have a
really, really weird problem that also heavily depends on the type of
parameters. Simply stick to the first one, this will be sufficient for
>90% of all cases.
Andreas
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't think so. The op wrote that he uses 2.4.3. So I guess, the
problem is, that PurchaseRequisitionController inherits (directly or
not) from 'object'. Although new style classes are allowed as
exceptions in 2.5, an additional requirement is, that the exception
must inherit from BaseExce
problem is negative values. If the unit returns the hex value 'e7',
it means -25, but python says it's 231:
-------
>>> int('e7', 16)
231
---
Does anyone have a clue a to what I need to do?
Thanks!
Andreas Lydersen
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re not a necessary ingredient of a type system,
nor is "eliminating tags" very relevant to its function.
- Andreas
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les.
Don't confuse type assignment with type annotation (which many
mainstream languages enforce for, but also only allow for, variable
declarations).
- Andreas
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ole purpose of a type system is to ensure that any
expression of type T always evaluates to a value of type T. So when you
look at type systems formally then you certainly have to assign types to
values, otherwise you couldn't prove any useful property about those
systems (esp. soundness).
- Andreas
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David Squire wrote:
> Andreas Rossberg wrote:
>
>> Rob Thorpe wrote:
>>
>>>>
>>>>> No, that isn't what I said. What I said was:
>>>>> "A language is latently typed if a value has a property - called it's
>>&
Rob Thorpe wrote:
>Andreas Rossberg wrote:
>>Rob Thorpe wrote:
>>
>>>>>"A language is latently typed if a value has a property - called it's
>>>>>type - attached to it, and given it's type it can only represent values
>>
w this is totally different from simple tagging, because it deals
with real types at runtime.
- Andreas
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ructure of an expression
the type system derives the type of the resulting value. An expression
may contain variables, and then the type system generally must know (or
be able to derive) their types too, but that's a separate issue. Most
values are anonymous. Nevertheless their types are kno
xplicit
(in ML for example you have the option type for that purpose).
- Andreas
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that cannot be updated, it makes
> no sense to call it "variable" since it isn't *able* to *vary.*
> Let's call it a named constant.
The name of a function argument is a variable. Its denotation changes
between calls. Still it cannot be mutated. Likewise, local "consta
is the encoding of these properties. A type
varying over time is an inherent contradiction (or another abuse of the
term "type").
- Andreas
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* have this ability... (which is slightly
different from ADTs, btw)
- Andreas
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e that does *not* have this ability... (which is slightly
>>different from ADTs, btw)
>
> Would Java count?
Yes, you are right. And there certainly are more in the OO camp.
But honestly, I do not remember when I last had to actively work with
one of them, including Java... :-)
- Andreas
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have this ability... (which is slightly
>> different from ADTs, btw)
>
> Java? C#? Icon? Perl? (Hmmm... Pascal does, IIRC.) I guess you just work
> with better languages than I do. :-)
OK, I admit that I exaggerated slightly. Although currently I'm indeed
able to mostly w
Marshall wrote:
>Andreas Rossberg wrote:
>>Chris Uppal wrote:
>>
>>>I have never been very happy with relating type to sets of values (objects,
>>>whatever).
>>
>>Indeed, this view is much too narrow. In particular, it cannot explain
>>abstract
omething and thereby discover its actual type at the moment[1], whereas
> "manifest" means that types[2] are lexically apparent in the code.
Mh, I'd say typecase is actually a form of reflection, which is yet a
different issue. Moreover, there are statically typed languages
arantee that a and b will always hold numbers.
I'm confused. Are you telling that you just write a+b in your programs
without trying to ensure that a and b are in fact numbers??
- Andreas
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object/value/variable can be different at different times in the execution.
Neither do I. But what is wrong with a mutable reference-to-union type,
as I suggested? It expresses this perfectly well.
- Andreas
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of them can even infer which comparison function to pass
for individual calls, so that the programmer does not have to bother.)
- Andreas
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equivalent to some already existent type). So you'd need at
least a theory for name generation or something similar to describe
abstract types in a types-as-sets metaphor.
- Andreas
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t; languages have a place in it. But some of the advocates of statically
> typed languages wish to lump these languages together with assembly
> language a "untyped" in an attempt to label them as unsafe.
No, see above. And I would assume that that is how most proponents of
th
}
Now, foo is still immutable, it is a local, but it clearly also varies.
- Andreas
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different issues). Just
that you cannot naively equate types with a set of underlying values,
which is what is usually meant by the types-are-sets metaphor - to
capture something like type abstraction you need to do more. (Even then
it might be arguable if it really describes the same thing.)
- Andreas
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either true or false (or undecidable), but it is so
persistently, considered under the same context. So if you want a type
system to capture temporal elements, then these must be part of a type
itself. You can introduce types with implications like "in context A,
this is T, in context B this is U". But the whole quoted part then is
the type, and it is itself invariant over time.
- Andreas
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ou snipped addressed it well enough.
Anyway, I can't believe that we actually need to argue about the fact
that - for any *useful* and *practical* notion of safety - C is *not* a
safe language. I refrain from continuing the discussion along this line,
because *that* is *really* silly.
- A
u simply do *not
want* to have this, even though you easily could. E.g. for OCaml,
unrestricted recursive typing was removed as default because of frequent
user complaints.
Which is why this actually is a very bad example to chose for dynamic
typing advocacy... ;-)
- Andreas
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type
of the function before actually running it. Eval itself can easily be
expressed on top of this as a polymorphic function, which does not run
the program if it does not have the desired type:
eval ['a] s = typecase compile s of
f : (()->'a) -> f ()
_ -> rais
the setup.py or as a single file in the
program dir. See examples in the py2exe installation dir.
Andreas
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a dead end using python. This fact lets me use python's great strengths (like
programmer efficiency etc.) without tossing and turning sleeplessly in my bed.
cheers,
aa
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Voice: +49 69 7505 3213 | ames AT avaya DOT com
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imic the c++ code snipped
above in python without adding a try-except-unlock-rethrow block around
every peace of code that locks some resources.
Greets,
Andreas Huesgen
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onstruct, which is *not* the same as a try/except. The
> finally clause is always executed, whether or not an exception is raised.
Yes, of course it must be the try finally construct and not try/except.
Shame on me ;)
Andreas Huesgen
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Hey,
I'm a noob at python so..
I just want to know, is there a function to type text global not in the
program but in other programs(like you where typing it).
For example in a textbox, in a program like "cmd.exe" or "notebook.exe".
I'm using windows xp.
Thanks! :)
/Scripter47
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Duncan Booth skrev:
> "Felipe Almeida Lessa" <[EMAIL PROTECTED]> wrote:
>
>
>> On 26 Dec 2006 04:22:38 -0800, placid <[EMAIL PROTECTED]> wrote:
>>
>>> So do you want to remove "&" or replace them with "&" ? If you
>>> want to replace it try the following;
>>>
>> I think he wants to
e the instance itself:
>>> x.value = 0
>>> id(x)
-1213448500
>>> x += 2
>>> x
MutableNumeric(2)
>>> id(x) # show that same instance
-1213448500
>>>
Is there anything wrong with such design? I am a bit surprised that
Python does not a
OpenRTS is a new open source project, with the aim of creating a
realtime strategy game. The game is developed in Python with Pygame. See
http://www.openrts.org for more info about the game if you are interested.
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Sybren Stuvel wrote:
> To be honest, it looks very much like games from 1995...
The game has isometric graphics. It's possible to have nice isometric
graphics, ie. look at Civilization 3. Besides, there's a lot more to a
good strategy game than good looks.
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ave to use select etc.?
The source code is here:
http://svn.gna.org/viewcvs/openrts/trunk/openrts/server/clienthandler.py?rev=36&view=markup
Thanks in advance!
Andreas R.
www.openrts.org
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Fredrik Lundh wrote:
> "Andreas R." <[EMAIL PROTECTED]> wrote:
>
>> I'm using Python's asynchat for networking. If I invoke the send()
>> method of the asynchat module, only a single send operation is possible
>> at any given time. If I call it mo
ze
is often 512 between client and server, when running len(packet) on the
*compressed* packed. The len() of a large packet is usually about 64969.
Complete source code is available at
http://svn.gna.org/daily/openrts-snapshot.tar.gz
Thanks anyone for the help,
- Andreas R.
www.openrts.org
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ar: How do I get the maximum/minimum double for current machine?
Thanks! Andreas
Please, cc me, as I am not on the list. Thanks!
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y", line 8, in ?
nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]
error: required argument is not a float
Maybe the second line should read:
cast = struct.unpack
However, the actual fpconst.py works fine.
Thanks for the hints,
Andreas
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already said, Lisp is
stronger typed than C, but C is statically typed, whereas Lisp is
dynamically typed. In Lisp (or Scheme), all variables have types:
(define foo #(1 2 3))
(vector? foo) => #t
(boolean? foo) => #t
See http://cliki.tunes.org/Type%20System.
Rotty
--
Andreas Rottmann
Hi all,
I've started writing use cases for my open source point of sale system (my
first attempt at use cases).
http://qualitypos.qbcon.com/
If anyone here has experience with either use cases or point of sale
systems, feel free to comment or criticize.
Regards,
Andreas
--
Aloha,
Jonathan Fine wrote:
> I'm writing some routines for handling dvi files.
> In case you didn't know, these are TeX's typeset output.
> These are binary files containing opcodes.
> I wish to write one or more dvi opcode interpreters.
> Are there any tools or good examples to follow for
> writ
*args, **kwargs)
Then I call
logging.setLoggerClass(MyLogger)
before the relevant loggers are created.
HTH,
aa
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perfect solutions there so a GPL'ed solution might be
ok. (Especially because one can use OCR without linking with a lib
*grin*)
Andreas
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Am Donnerstag, den 02.06.2005, 17:52 + schrieb Karl A. Krueger:
> Andreas Kostyrka <[EMAIL PROTECTED]> wrote:
> > *) GPL is not acceptable for "library" stuff, because as a software
> > developer I'm sometimes forced to do "closed" stuff.
> &
at a company might
do with it in the future ;)
Andreas
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-owned" projects. Every part-owner owns his
part. And it makes relicensing (taking the project closed-source) very
difficult.
That's a design feature, not a bug ;)
Andreas
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lambda : None)()
class C(A,B):
def bar(self):
print "C"
getattr(super(C, self), "bar", lambda : None)()
print "-" * 20, "base class without super call"
C().bar()
This produces:
no super in A/B
C
A
I'd consider taking a look at the re module ;)
Andreas
On Fri, Jun 10, 2005 at 02:57:21PM +0100, John Abel wrote:
> Does anyone know of a quick way of performing this:
>
> $testVar =~ s#/mail/.*$##g
>
> The only way I can think of doing it, is:
>
> mailPos = testVar.
understand how, more or less, your
> computer or language works, otherwise your code will
> be needless thousand times slower and will require
> thousand times more memory than is necessary.
> Look a recent thread where someone was asking why
> python was so slow (and the code contained stuff
> like "if x in range(low, high):" in an inner loop
> that was itself pointless).
Andreas
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Should my 'user
argument' be at the beginning or at the end of e.args?
Thanks! Andreas
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that it's amortized O(1)
> instead then you say "wow..." and after some thinking
> "ok, i think i understand how it could be done" and in
> both cases you'll remember it. It's a clear *concrete* fact
> that I think just cannot be forgot.
Believe it can ;)
But that's the idea why certain courses forced us to implement at
least the most important data structures by ourselves.
Because looking at it in a book is so much less intensive than doing
it ;)
Andreas
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Well, It means that eval(repr(x)) == x if at all possible.
Basically:
repr('abc') -> 'abc'
str('abc') -> abc
You'll notice that 'abc' is a valid python expression for the string,
while abc is not a valid string expression.
Andreas
On Wed, Jun
On Fri, Jun 17, 2005 at 01:03:14AM -0700, [EMAIL PROTECTED] wrote:
> hi everyone
> i'm newbie
>
> i try to compile the pyrex module:
> def controlla(char *test):
You cannot have a C datatype in a Python like that.
Much better to use def controlla(test):
Andreas
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Java lends itself to
this,
Twisted> what with interfaces and inheritance and dynamic
Twisted> class loading!)
Have a look at Genera, the OS of the Lisp Machines. It offers all
that and much more. Unfortunately it is almost non existent
nowadays.
'Andreas
--
Wherever I lay
y clutters your hard drive with
Twisted> "temporary" files you occasionally forget to delete.
You obviously have no clue about working under Unix either.
'Andreas
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installed
Twisted> (equivalent to rooting around in C:\Program Files\Appname for .hlp
Twisted> files, because F1 didn't work and there was no "help" menu, if
such a
Twisted> thing ever happened on Windoze).
Ever heard of man pages? and info?
'Andreas
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e extension:
http://libmsgque.sourceforge.net/tclmsgque.htm
Regards,
Andreas Otto (aotto1968)
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ood Python style? Or would you recommend to
refrain from such complex single-line code??
Thanks!
Andreas
inp = resource(some_file)
# read first entries of all non-empty lines into a set
some_set = frozenset([line.split()[0] for line in \
filter(None, [ln.strip() for ln in inp])]
Aloha,
i'm trying to write an xml filter, that extracts some info about
an .xml document (with external entities), esp. start elements and
external entities. The document is a DOCBOOK xml and afacs
well formed and passes our docbook toolchain (dblatex etc.).
My parser is (very simple):
[115] scyl
Aloha,
Lawrence D'Oliveiro wrote:
> In message <[EMAIL PROTECTED]>, Andreas Lobinger wrote:
>>Anyone any idea where the error is produced?
> Do you want to try adding an EndElementHandler as well, just to get more
> information on where the error might be happ
Aloha,
Andreas Lobinger wrote:
> Lawrence D'Oliveiro wrote:
>> In message <[EMAIL PROTECTED]>, Andreas Lobinger wrote:
>>> Anyone any idea where the error is produced?
... to share my findings with you:
def ex(self,context,baseid,n1,n2):
print "
Aloha,
Andreas Lobinger wrote:
> Andreas Lobinger wrote:
>> Lawrence D'Oliveiro wrote:
>>> In message <[EMAIL PROTECTED]>, Andreas Lobinger wrote:
>>>> Anyone any idea where the error is produced?
> The registered Handler has to return a (integer) va
yet so I can't vouch for its quality. (am playing
>it now)
Maybe http://www.pythonchallenge.com/ ?
Cheers,
Drea
Andreas Tawn
Lead Technical Artist
Ubisoft Reflections
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Is there something like a osgi implementation in python? I am really
impressed by the bundle system and the possibility to load and unload
bundles without wasting memory. Is it even possible to do something
like that in python? Would be nice to have a very small python
interpreter and just load the
she built Rome in a day).
More than rumor apparently:
http://www.cmu.edu/cmnews/extra/060310_alice.html
Cheers,
- Andreas
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--On 28. September 2007 16:36:43 +0100 kamal hamzat
<[EMAIL PROTECTED]> wrote:
Dear All,
I have this error after i added the if statement
Error Type: TypeError
Error Value: mybrains.__cmp__(x,y) requires y to be a 'mybrains', not a
'int'
for i in context.zCatNewsCurrent():
if i <= 5
>i just want to generate numbers in the form like:
>
>1,2,4,8,16,32.to a maximum of 1024
>using a range function
>>> a = [2**x for x in range(11)]
>>> a
[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024]
Cheers,
Andreas Tawn
Lead Technical Artist
Ubisoft Reflectio
t;>> 0.10001 == 0.1
True
>>> 0.30004 == 0.3
False
I guess this means that Python has some concept of "close enough", but
I'll have to defer to someone more knowledgeable to explain that.
Cheers,
Andreas Tawn
Lead Technical Artist
Ubisoft Reflections
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> Steven
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>
After some caffeine and a head-smack, I realise that you're absolutely
right and I just made the same mistake as the OP (doh).
It does demonstrate just how sneaky floating point representations are
though.
Chee
versions of python (2.6 ?, 3.0
?) will contain class decorators and allow syntax like class A(*bases): pass
Is there a better approach? Any comments are appreciated.
I have been seriously using Python for one year know, mostly in the context of
graph algorithms etc., and it has always been a delightful coding experience!
Best regards,
Andreas
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; friends.get_key('Isabelle').hair_color
'green'
A more sensible, realistic example are attributes of graph nodes (e.g. color,
shape, etc) in the networkx package, where node objects are stored as keys of
(nested) dictionaries.
Is there any particular reason why the built-in dictionary does not define a
get_key() method, but only keys(), iterkeys(), and has_key() ?
Cheers,
Andreas
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ng str would be the simplest,
most straightforward structure for a node object.
Of course there are workarounds (e.g. get all keys with keys()), but I thought
something similar to a get_key() dictionary method would be the easiest way to
retrieve the actually stored key object, and I was just
On Oct 9, 9:18 pm, Erik Jones <[EMAIL PROTECTED]> wrote:
> So, do you not keep references to your nodes anywhere but the actual
> graph dict? I kind of agree with Chris here in that two dicts will
> work. One for the nodes, indexed by their strings.
Yes, I guess that's exactly what I want. To kee
he (toy-) implementation of a
frame-based knowledge representation system using Python's object
model, where one definitely needs classes to keep track of their
instances ...
Cheers,
Andreas
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ferent
> object depending on the retrieval method used and that is NOT what
> the built-in dict is for. In fact, now that I think of it, get_key
> is probably a bad name for it, get_other_object_with_this_same_key is
> probably more apt :)
Or more precise:
get_key_that_was_used_when_value_was_inserted_into_dictionary :-)
Thanks, for taking the time for this elaborate response!
Cheers,
Andreas
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> > [...]In fact, now that I think of it, get_key
> > is probably a bad name for it, get_other_object_with_this_same_key is
> > probably more apt :)
>
> Or more precise:
> get_key_that_was_used_when_value_was_inserted_into_dictionary :-)
Or even more precisely:
get_key_obj
strings "foo bar" and "some text" from
the commandline <"foo bar" "some text">)?
If not, do you have any other ideas how to handle this problem (increasing
commandline length, xml files might be a way)?
Regards,
Andreas Huesgen
Viel oder
e shlex module::
>
> >>> import shlex
> >>> shlex.split('"foo bar" "some text"')
> ['foo bar', 'some text']
>
Thanks, that is exactly what i need.
Andreas Huesgen
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On Oct 11, 10:17 am, Erik Jones <[EMAIL PROTECTED]> wrote:
> No, duck typing and inheritance are two different things. Duck
> typing is when you implement the same operations as another object or
> class, whereas with inheritance you get the same implementation as
> that of the parent class.
Exc
On Oct 11, 1:42 pm, Erik Jones <[EMAIL PROTECTED]> wrote:
> On Oct 11, 2007, at 2:25 PM, Andreas Kraemer wrote:
>
> > On Oct 11, 10:17 am, Erik Jones <[EMAIL PROTECTED]> wrote:
>
> >> No, duck typing and inheritance are two different things. Duck
> &
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