toPyObject() is mentioned but undocumented at
http://www.riverbankcomputing.com/static/Docs/PyQt4/html/qvariant.html#toPyObject
without it being documented, I find it a bit surprising that toPyObject()
can return a QString.
Of course QString is a python object but then QVariant is too.
--
Wolf
On Montag 12 September 2011, Rita wrote:
> I have a large file, 18gb uncompressed, and I would like to
> know what is the preferred method to read this file for
> random access. I have several processes reading the file
> which different calculate arguments. My server has 64gb of
> memory. Not sure
On Dienstag 06 September 2011, 守株待兔 wrote:
> (date,open,high,low,close,vol,adjclose) = (row[0],
> row[1], row[2], row[3],row[4], row[5], row[6]) print
> row[0], row[1], row[2], row[3],row[4], row[5], row[6]
>
>
> the wrong output is :
> file = open(filename,'r')
> TypeError: 's
On Freitag 29 Juli 2011, Josh Benner wrote:
> if args.build not None:
which python version understands this?
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On Freitag 17 Juni 2011, Steven D'Aprano wrote:
> run this one-
> liner and wonder no more...
looks like something dangerous to me. What does
it do? rm -rf ?
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On Dienstag 31 Mai 2011, Henry Olders wrote:
> You're partially right - what I want is a function that is
> free of side effects back through the parameters passed in
> the function call.
I don't know any object oriented language where it is not
possible to change objects passed in as parameters.
On Dienstag 31 Mai 2011, Henry Olders wrote:
> What I would like is that the variables which are included in
> the function definition's parameter list, would be always
> treated as local to that function (and of course, accessible
> to nested functions) but NOT global unless explicitly defined
> a
On Sonntag 29 Mai 2011, Henry Olders wrote:
> It seems that in Python, a variable inside a function is
> global unless it's assigned.
no, they are local
> I would have thought that a function parameter would
> automatically be considered local to the function. It doesn't
> make sense to me to pas
On Sonntag 29 Mai 2011, Tim Delaney wrote:
> There's a second part the mystery - sets and dictionaries (and
> I think lists) assume that identify implies equality (hence
> the second result). This was recently discussed on
> python-dev, and the decision was to leave things as-is.
On Sonntag 29 Mai
On Samstag 28 Mai 2011, Marc Christiansen wrote:
> And I wouldn't rely on 3.2
> not to break.
it breaks too like it should, but only rarely
like one out of 10 times
i5:/pub/src/gitgames/kajongg/src$ python3.2 test.py
100
i5:/pub/src/gitgames/kajongg/src$ python3.2 test.py
100
i5:/pub/sr
On Freitag 22 April 2011, Vlastimil Brom wrote:
> check whether all items of a given dictionary are
> present in a reference dictionary
I would not call this is_subdict. That name does not
clearly express that all keys need to have the same
value.
set(subdict.items()) <= set(reference.items())
s
On Freitag 22 April 2011, Terry Reedy wrote:
> > for i in g:
> > if i is not None:
> > g.close()
> > return i
>
> When returning from the function, g, if local, should
> disappear.
yes - it disappears in the sense that it no longer
accessible, but
AFAIK python makes no guarantees as for when an
On Donnerstag 21 April 2011, RVince wrote:
> When I make the following call:
>
> http://localhost/eligibility/cmseditorlinemethod/474724434
broken link - I have no /eligilibity on my localhost
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On Montag 18 April 2011, Eric Frederich wrote:
> File "F:\My_Python27\lib\socket.py", line 47, in
> import _socket
> ImportError: No module named _socket
>
> F:\pyside\setuptools-0.6c11>
I have C:\Python27
and within that, DLLS\_socket.pyd
this is what import _socket should find
do you
On Donnerstag 17 März 2011, kracekumar ramaraju wrote:
> >>> 22/7.0
>
> 3.1428571428571428
>
> >>> import math
> >>> math.pi
>
> 3.1415926535897931
>
> Why is the difference is so much ?is pi =22/7 or something ?
https://secure.wikimedia.org/wikipedia/en/wiki/Pi
--
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On Freitag 25 Februar 2011, Andrew wrote:
> I find that calling getpass produces a warning noting that it
> can't suppress output, if I'm using idle, wingide, or a few
> others. If I'm running from the console it works fine, but
> then I can't make use of ide-integrated debugging.
>
> I know I cou
On Dienstag 01 Februar 2011, Gerald Britton wrote:
> I'd like to know how (perhaps with the inspect module) I can
> tell if I am running in a context manager.
class f(object):
def __init__(self):
self.inContext = False
def __enter__(self):
self.inContext = True
re
On Montag 10 Januar 2011, loial wrote:
> First question...how do I send it to the printer? Printer
> would be on the network.
echo PJL | lp -oraw -dnetworkprinter
if it works, translate it to python
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On Freitag 10 Dezember 2010, Dirk Nachbar wrote:
> > b=a[:]
> >
> > --
> > Wolfgang
>
> I did that but then some things I do with b happen to a as
> well.
as others said, this is no deep copy. So if you do something
to an element in b, and if the same element is in a, both
are changed as they ar
On Freitag 10 Dezember 2010, Dirk Nachbar wrote:
> I want to take a copy of a list a
>
> b=a
>
> and then do things with b which don't affect a.
>
> How can I do this?
>
> Dirk
b=a[:]
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On Mittwoch 24 November 2010, John Yeung wrote:
> Are there any
> simple adjustments that can be made without sacrificing (too
> much) performance?
>>> difflib.SequenceMatcher(None,*sorted(('BYRD','BRADY'))).ratio()
0.3
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Wolfgang
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On Freitag 19 November 2010, Alexander Gattin wrote:
> It's better to select count(1) instead of
> count(*). The latter may skip rows consisting
> entirely of NULLs IIRC.
in some data bases count(1) is said to be faster
than count(*), I believe
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On Mittwoch 17 November 2010, Wolfgang Rohdewald wrote:
> On Mittwoch 17 November 2010, justin wrote:
> > But the problem is that the code is not mine, and it takes
> > over a day for me to get the point where the segmentation
> > fault occurred. Plus, it seems
try to figure out exactly at
> which point the segmentation fault occurs, and think where to
> go from there according to your kind advice.
try valgrind
--
mit freundlichen Grüssen
with my best greetings
Wolfgang Rohdewald
dipl. Informatik Ing. ETH Rohdewald Systemberatung
Karauschenstieg
On Dienstag 05 Oktober 2010, MRAB wrote:
> > About notation, even if loved right-hand-half-open
> > intervals, I would wonder about [a,b] noting it. I guess
> > 99.9% of programmers and novices (even purely amateur) have
> > learnt about intervals at school in math courses. Both
> > notations I kno
On Samstag 25 September 2010, Steven D'Aprano wrote:
> My guess is that you've copied the .pyc file onto the server,
> BUT there is also an older version of the .py file there as
> well. Because the modification date is older than that of the
> .pyc file, Python executes the compiled code from the
On Freitag 24 September 2010, Wim Feijen wrote:
> would really like having a string.contains('...') function
> which returns either True or False. I know I can mimick this
> behaviour by saying string.find('...') != -1 , however, I
> find this harder to read.
>>> a = 'xy134'
>>> '13' in a
True
>>
On Mittwoch 11 August 2010, Cameron Simpson wrote:
> Usually you either
> need an option on the upstream program to tell it to line
> buffer explicitly
once cat had an option -u doing exactly that but nowadays
-u seems to be ignored
http://www.opengroup.org/onlinepubs/009695399/utilities/cat.html
On Donnerstag 05 August 2010, Chris Withers wrote:
> But why only the request for auth credentials?
for security reasons I suppose - make sure a human enters
the password
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On Donnerstag 05 August 2010, Chris Withers wrote:
> ...then the output is indeed captured. So, what is svn doing
> differently? How is it escaping its jail?
maybe it does not read from stdin but directly from /dev/tty
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On Freitag 21 Mai 2010, Jake b wrote:
> > I don't know of any big game written in python. ( meaning
> > python code, using c++ libs
would you call 8702 python statements big? If so,
Kajongg would be a candidate.
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On Sonntag 09 Mai 2010, Tim Roberts wrote:
> No. On Linux, you need to mount the share in some empty
> directory (using mount or smbmount), then read the files from
> that directory.
actually the mount directory does not have to be empty - whatever
it contains is invisible while someting is mount
On Friday 22 January 2010, Alf P. Steinbach wrote:
> I get the impression that there's some message traffic that I don't
> see
> For example, the recent thread "Covert number into string" started
> with a reply in my newreader, using EternalSeptember's NNTP host.
>
> It also starts with a reply
On Monday 18 January 2010, BarryJOgorman wrote:
> TypeError: object._new_() takes no parameters
> def _init_(self, name, job=None, pay=0):
__init__ needs two underscores left and right
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On Wednesday 18 November 2009, Terry Reedy wrote:
> Python today is at least 100x as fast as 1.4 (my first version) was
> in its time. Which is to say, Python today is as fast as C was
> then
on the same hardware? That must have been a very buggy C compiler.
Or was it a C interpreter?
--
Wol
On Monday 05 October 2009, MRAB wrote:
> "(?!.*?(C1).*?\1)" will succeed only if ".*?(C1).*?\1" has failed,
> in which case the group (group 1) will be undefined (no capture).
I see.
I should have moved the (C1) out of this expression anyway:
>>> re.match(r'L(?P..)(?!.*?(?P=tile).*?(?P=tile))(
On Monday 05 October 2009, MRAB wrote:
> You're currently looking for one that's not followed by another;
> the solution is to check first whether there are two:
>
> >>> re.match(r'(?!.*?C1.*?C1)(.*?C1)','C1b1b1b1 b3b3b3b3
> C1C2C3').groups()
>
> Traceback (most recent call last):
>File ""
On Monday 05 October 2009, Carl Banks wrote:
> Why do you have to use a regexp at all?
not one but many with arbitrary content.
please read my answer to Stefan. Take a look
at the regexes I am using:
http://websvn.kde.org/trunk/playground/games/kmj/src/predefined.py?view=markup
moreover they are
On Monday 05 October 2009, Stefan Behnel wrote:
> Wolfgang Rohdewald wrote:
> > I want to match a string only if a word (C1 in this example)
> > appears at most once in it.
>
> def match(s):
> if s.count("C1") > 1:
> return None
>
On Monday 05 October 2009, Carl Banks wrote:
> What you're not realizing is that if a regexp search comes to a
> dead end, it won't simply return "no match". Instead it'll throw
> away part of the match, and backtrack to a previously-matched
> variable-length subexpression, such as ".*?", and t
Hi,
I want to match a string only if a word (C1 in this example) appears
at most once in it. This is what I tried:
>>> re.match(r'(.*?C1)((?!.*C1))','C1b1b1b1 b3b3b3b3 C1C2C3').groups()
('C1b1b1b1 b3b3b3b3 C1', '')
>>> re.match(r'(.*?C1)','C1b1b1b1 b3b3b3b3 C1C2C3').groups()
('C1',)
but this sho
On Friday 18 September 2009, koranthala wrote:
> What if I want to print 1 to 100 in a loop without spaces in
> between? I think that is the OPs question.
arr = ['a', 'b', 'c', 'andsoon']
print ''.join(arr)
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On Friday 18 September 2009, Ethan Furman wrote:
> loop != scope
true for python but in some languages the loop
counter has a scope limited to the loop
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On Sunday 13 September 2009, Nadav Chernin wrote:
> I'm writing program that read data from some instrument trough
> RS232. This instrument send data in VT100 format. I need only to
> extract the text without all other characters that describe how to
> represent data on the screen. Is there some
On Thursday 06 August 2009, Yingjie Lan wrote:
> For more information about expy, please visit its homepage at:
> http://expy.sf.net/
looks very interesting, bookmarked.
In your example class mate, def rename looks wrong:
if malloc fails, the previous name should probably not
be replaced by an em
On Thursday 30 July 2009, Wolfgang Rohdewald wrote:
> so I did the conversion mentioned there. This works:
I actually do not know if it works - but it compiles.
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On Thursday 30 July 2009, MRAB wrote:
> So it complains about:
>
> ++(RE_CHAR*)context->text_ptr
>
> but not about:
>
> ++info->repeat.count
>
> Does this mean that the gcc compiler thinks that the cast makes it
> an rvalue? I'm using Visual C++ 2008 Express Edition, which doesn't
> compl
On Thursday 30 July 2009, MRAB wrote:
> There are other lines which are similar, eg line 1487. Do they all
> give the same/similar error with your compiler?
yes. The full output with gcc-4.3:
notebook:~/kmj/src$ LANG=C python setup.py build
running build
running build_py
running build_ext
build
On Tuesday 28 July 2009, Christopher Arndt wrote:
> setup(name='regex',
> version='1.0',
> py_modules = ['regex'],
> ext_modules=[Extension('_regex', ['_regex.c'])],
> )
>
> Also, you need to copy "unicodedata_db.h" from the "Modules"
> directory of the Python source tree to your workin
On Monday 27 July 2009, MRAB wrote:
> I've been working on a new implementation of the re module. The
> details are at http://bugs.python.org/issue2636, specifically from
> http://bugs.python.org/issue2636#msg90954. I've included a .pyd
> file for Python 2.6 on Windows if you want to try it out.
h
On Wednesday 22 July 2009, Wolfgang Rohdewald wrote:
> On Wednesday 22 July 2009, Gabriel Genellina wrote:
> > x = X()
> > x.foo = "value"
>
> del x.foo
sorry, was not yet quite awaken - I read "delete target name"
instead of "detect target name&quo
On Wednesday 22 July 2009, Gabriel Genellina wrote:
> x = X()
> x.foo = "value"
del x.foo
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On Wednesday 17 June 2009, Lie Ryan wrote:
> Wolfgang Rohdewald wrote:
> > On Wednesday, 17. June 2009, Steven D'Aprano wrote:
> >> while text:
> >> for c in text:
> >> if c not in printable: return False
> >
On Wednesday, 17. June 2009, Steven D'Aprano wrote:
> while text:
> for c in text:
> if c not in printable: return False
that is one loop per character.
wouldn't it be faster to apply a regex to text?
something like
while text:
if re.search(r'\W',text)
On Montag, 27. April 2009, John Machin wrote:
> ἐδάκρυσεν ὁ Ἰησοῦς
και εγώ
+1
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On Donnerstag, 2. April 2009, Dunwitch wrote:
> for x in (fileList):
> self.ui.displayVideo.setText(x) # This only shows the last
self.ui.displayVideo.setText('\n'.join(fileList))
but I would go for a solution with QDirModel / QListView
http://doc.trolltech.com/4.5/itemview
On Freitag, 13. März 2009, Raymond Hettinger wrote:
> [Paul Rubin]
> > What if you want to change the separator? Europeans usually
> > use periods instead of commas: one thousand = 1.000.
>
> That is supported also.
do you support just a fixed set of separators or anything?
how about this: (Swi
On Montag, 9. März 2009, r wrote:
> Long answer:
> 'Ye%s' %'s'*1000
simplified long answer:
'Yes' * 1000
or did you mean
'Ye%s' %('s'*1000)
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On Montag, 23. Februar 2009, Steve Holden wrote:
> yat...@gmail.com wrote:
> > Hi there.
> [...]
>
> Yatsek:
>
> You just "hijacked a thread" by writing your question as a reply to
> somebody else's post
did he? His mail headers show no reference to any other mail AFAICS
--
Wolfgang
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On Mittwoch, 21. Januar 2009, Gaurav Veda wrote:
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position
> 4357: ordinal not in range(128)
>
> Before sending the (insert) query to the mysql server, I do the
> following which I think should've taken care of this problem:
> sqlStr =
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