Dongsheng Ruan wrote:
> Not quite related with Python. But my Data Structure course is experiemented
> on python and there is no data structure group, So I have to post here:
>
> Write a procedure (in pseudocode!) to increase the number of buckets in a
> (closed) hash table. Analyze its time an
I'm using subprocess to launch, well, sub-processes, but now I'm
stumbling due to blocking I/O.
Is there a way for me to know that there's data on a pipe, and possibly
how much data is there so I can get it? Currently I'm doing this:
process = subprocess.Popen(
args,
[EMAIL PROTECTED] wrote:
> First, pdflatex is too slow. Second, my templates are M$-Word doc
> files, and they cannot be easily converted to tex. I have tried to
> convert them to tex using OpenOffice, but the result is ugly as hell.
Ok, have you tried using the PDF printers (I've used PDFfactory
[EMAIL PROTECTED] wrote:
> So, what library can I use to convert from RTF to PDF ? GPL / BSD
> Libraries are welcome.
If you could write to LaTeX files instead, you could then just use
pdflatex that comes with all of the LaTeX distributions.
-tom!
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Bjoern Schliessmann wrote:
> Intels aren't RISC, are they?
Not the ones in PCs. The OP didn't specify the CPU that's being used,
however.
-tom!
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Hendrik van Rooyen wrote:
> It works well - and it is surprisingly fast too...
> And its easy if the opcodes are all say one byte,
> else you need an opcode length field too, and fancier
> parsing.
Often (always?) RISC architectures' instruction+operand lengths are
fixed to the word size of the m
Peter Decker wrote:
> > Maybe I'm also weird, but I use a variable-pitch font when programming
> > in Python. So a "tab equals some number of spaces" really isn't useful
> > to me. My setup is, "tab equals this much space".
>
> A year ago I would have thought you were weird, but after reading a
Lawrence D'Oliveiro wrote:
> I think there should be a single environment variable, perhaps
> called "TABS", which specifies the tab settings across all relevant tools
> that work with text, including less and diff. So for example setting this
> as
>
> export TABS=4
>
> will cause these tool
Steven D'Aprano wrote:
> What does the author of the original class know about *my* needs and
> requirements?
The only thing that the original class author might know is that mucking
with data marked private may well cause problems, and hiding it
therefore prevents those problems.
> It may turn
vbgunz wrote:
> I don't understand what all the fuss is about. Add a single page to the
> installer and on it, have 3 radio buttons.
I don't understand what the fuss is about, and would not give that
recommendation based on my not understanding it!
I have never ever needed or wanted to launch th
Paul Watson wrote:
> > It is certainly possible to construct a set of denominations for which the
> > algorithm occasionally chooses badly. For example, if you give it the set
> > (40,35,10) and ask it to make change for 70, it will be suboptimal.
>
> Unless I am missing the point, the minimum n
cypher543 wrote:
> That was a very good answer, and it sure sounds like it would work.
> However, I failed at implementing it. :( My updated runQueue() function
> is:
>
> def runQueue(self):
> self.buildProcess = None
> count = 1 # current position in the queue
> while True:
>
Marc 'BlackJack' Rintsch wrote:
> >> Did you try to open your code files with another editor, which has a
> >> different length for tabulator chars? It would look quite ugly, I
> >> guess...
> >
> > Actually, no. Everyone can choose their own number of spaces-per-tab and
> > it'll look right, as
jim-on-linux wrote:
> When the client runs the utility program the
> output file is built but nothing prints and no
> messages appear.
If the file has a '.txt' extension, you could try os.system'ing
"start ", which'll make the file pop open with notepad (or
whatever happens to be associated wi
cypher543 wrote:
> self.buildPID = subprocess.Popen(buildCmd, stdout = subprocess.PIPE, stderr =
> subprocess.STDOUT)
Instead of calling it self.buildPID, you might just call it
self.buildProcess or something. It's actually a Popen object that gets
returned.
So yes you can do what you want:
_
Gabriel Genellina wrote:
> Did you *actually* tried what Tom Plunket posted? Two tiny chars make
> a difference.
The sad irony is that before taking off for vacation I was struggling at
work with the same problem in some sense. I couldn't figure out why for
some processes I got
OKB (not okblacke) wrote:
> > (You dedent common leading tabs, except if preceded by common leading
> > spaces (?)).
>
> There cannot be common leading tabs if they are preceded by
> anything. If they were preceded by something, they wouldn't be
> "leading".
Right, but 'common leading w
cypher543 wrote:
> Thank you for the examples, but I have tried all of that before.
Did you try my example specifically?
> No matter what I do, my program always hangs while it waits for the
> process to exit and then it prints all of the output at once.
>
> self.buildPID = subprocess.Popen(["p
Tom Plunket wrote:
> while p.poll() == None:
> data = p.stdout.readline()
> if data:
> print data,
If you change that print to something more decorated, like,
print 'process said:', data,
Then it might be more
cypher543 wrote:
> This has been driving me insane for the last hour or so. I have search
> everywhere, and nothing works. I am trying to use the subprocess module
> to run a program and get its output line by line. But, it always waits
> for the process to terminate and then return the output all
luxnoctis wrote:
> It says exactly:
>
> The specified module could not be found.
> LoadLibrary(pythondll) failed
>
> Don't know if that helps at all.
There's something installed on Compaq computers that uses the Python
stuff too, but I never figured out what it was. I figured it may have
been
Ray Schumacher wrote:
> But, how can I avoid disk writes? wx's *.SaveFile() needs a string
> file name (no objects).
> I'm going to investigate PIL's im.save(), as it appears to allow
> file-objects.
Take a look at the img2*.py files in wx.tools. They're sorta sketchy
imo, but they do the tric
Frederic Rentsch wrote:
> Your rules seem incomplete.
Not my rules, the stated documentation for dedent. "My" understanding
of them may not be equivalent to yours, however.
> What if common tabs remain after stripping common white space?
What if we just go with, "[r]emove any whitespace than c
Steven D'Aprano wrote:
> I don't know what "problems" with tabs you are talking about. I never have
> problems with tabs. *Other people* who choose to use software that doesn't
> understand tabs have problems.
>
> I've spent a lot of time reading both sides of the tabs versus spaces
> argument, a
eldorado wrote:
> >>> g = os.popen("ps -ef | grep HUB | grep -v grep | awk '{ print $2 }'")
> >>> h = g.readlines()
> >>> g.close()
> >>> h
> ['87334\012']
> >>> h = h[:-1]
> >>> h
> []
> >>>
I understand you're probably set, but instead of using readlines() you
could also do this:
g = os
h
Hey gang-
I just ran into the fabled "Secure Sockets not enabled in ActivePython,"
and the ActiveState FAQ says I should just grab _ssl.pyd from
"somewhere", offering up the python.org distribution as a possible
source.
I'm on 2.4 at this time, and python.org has what appears to be a
considerably
Frederic Rentsch wrote:
> It this works, good for you. I can't say I understand your objective.
> (You dedent common leading tabs, except if preceded by common leading
> spaces (?)).
I dedent common leading whitespace, and tabs aren't equivalent to
spaces.
E.g. if some text is indented exclusi
Frederic Rentsch wrote:
> Following a call to dedent () it shouldn't be hard to translate leading
> groups of so many spaces back to tabs.
Sure, but the point is more that I don't think it's valid to change to
tabs in the first place.
E.g.:
input = ' ' + '\t' + 'hello\n' +
'\t' + 'wo
Frederic Rentsch wrote:
> > Well, there is that small problem that there are leading tabs that I
> > want stripped. I guess I could manually replace all tabs with eight
> > spaces (as opposed to 'correct' tab stops), and then replace them when
> > done, but it's probably just as easy to write a n
Peter Otten wrote:
> > I guess I could manually replace all tabs with eight
> > spaces (as opposed to 'correct' tab stops), and then replace them when
> > done, but it's probably just as easy to write a non-destructive dedent.
>
> You mean, as easy as
>
> >>> "\talpha\tbeta\t".expandtabs()
> '
CakeProphet wrote:
> Hmmm... a quick fix might be to temporarily replace all tab characters
> with another, relatively unused control character.
>
> MyString = MyString.replace("\t", chr(1))
> MyString = textwrap.dedent(MyString)
> MyString = MyString.replace(chr(1), "\t")
>
> Of course... this
The documentation for dedent says, "Remove any whitespace than can be
uniformly removed from the left of every line in `text`", yet I'm
finding that it's also modifying the '\t' characters, which is highly
undesirable in my application. Is there any way to stop it from doing
this, or alternatively
Rob Williscroft wrote:
> "name" in the above code is bound to a an entry in "CreateTests1"'s
> locals, and ExCall has a (hidden) reference to that locals, so
> by the time ExCall is finally called the value associated
> with "name" has been replaced by (count - 1).
Ah, I got it. Thanks. Than
...at least, I think that I'm having a problem understanding the way
closures work.
I'm trying to define a function for an object which will take certain
objects from the parent scope at the time that function is defined.
For some reason, if I do this function definition in a loop, the
locals give
Erik Max Francis wrote:
> In dynamically-typed languages in general, explicit typechecks are not
> a good idea, since they often preclude user-defined objects from being
> used. Instead, try performing the call and catch the resulting
> TypeError:
Good point, although I need to figure out if
I'd like to figure out if a given parameter is a function or not.
E.g.
>>> type(1)
>>> type(1) == int
True
implies:
>>> def foo():
... pass
...
>>> type(foo)
>>> type(foo) == function
Traceback (most recent call last):
File "", line 1, in ?
NameError: name 'function' is not defined
Is th
Chris Lambacher wrote:
> > > I'm just a bit loathe to download and install more stuff when
> > > something simpler appears to be near-at-hand. ...especially
> > > considering the page describing this module doesn't offer any download
> > > links! http://python-mock.sourceforge.net/
>
> Oh yeah,
Google indicates that wx.Process.Kill hadn't been implemented some
time ago in wxPython for Win32. Is that still the case? It's kind of
a drag since several sources (including wxPython wiki) strongly advise
(by my reading and intended use) using wxProcess over the built-in
stuff, but it's not ent
Tom Plunket wrote:
> I don't know anything about COM beyond the fact that I can look in the
> OLE/COM browser to maybe figure out the API that an object has that I
> need to operate on.
I'm still not entirely sure what's going on, because there are some
methods and prope
John Machin wrote:
> If you were to write 'c:\temp\book1.csv', it would blow up ... because
> \t -> tab and \b -> backspace. Get into the habit of *always* using raw
> strings r'C:\Temp\Book1.csv' for Windows file names (and re patterns).
> You could use double backslashing 'C:\\Temp\\Book1.csv' b
I don't know anything about COM beyond the fact that I can look in the
OLE/COM browser to maybe figure out the API that an object has that I
need to operate on. Usually this gets me by fine; I've written mostly
utilities for Developer Studio which work fine if a little slow, and a
bit of junk for
wesley chun wrote:
> welcome to Python!! i too, have (recently) been interested in COM
> programming, so much so that i added some material...
> from time import sleep
> import win32com.client as win32
>
> def excel():
> xl = win32.gencache.EnsureDispatch('Excel.Application')
> ss = xl.
Fredrik Lundh wrote:
> so what's the practical difference between
>
> def __init__(self, name):
> self.name = name
> self.data = []
>
> and
>
> def __init__(self, name):
> self.name = name
> self.data=[]
Ignoring nerd-extreme-pedantic-mode for this ci
Fredrik Lundh wrote:
> if you want separate instances to use separate objects, make sure you
> create new objects for each new instance. see Tim's reply for how to
> do that.
kath's response is probably better.
In Python, you don't define the instance members in the class scope
like the OP has
Roman Yakovenko wrote:
> you want to find some kind of "translator"
>
> C++ code:
>std::cout << 1;
> translator output:
>print 1
>
> Am I right? If so, I am pretty sure that such "translator" does not
> exist - too complex.
...however such a "refactor" is easy for a human to do.
What t
John Machin wrote:
> > message = unicode('Hello, world')
> > myFile.write(message)
> >
> > results in 'message' being converted back to a string before being
> > written. Is the way to do this to do something hideous like this:
> >
> > for c in message:
> >myFile.write(struct.pack('>H', ord(u
I am building a file with the help of the struct module.
I would like to be able to put Unicode strings into this file, but I'm
not sure how to do it.
The format I'm trying to write is basically this C structure:
struct MyFile
{
int magic;
int flags;
short otherFlags;
char pad[22];
Erik Max Francis wrote:
> > For enrichment purposes, is there a way to do this sort of thing with
> > a generator? E.g. something like:
> >
> > def SentenceGenerator():
> >words = ['I', 'have', 'been', 'to', 'the', 'fair']
> >for w in words:
> > yield w
> >
> > message = "%s %s %
Justin Azoff wrote:
> Of course..
>
> I should read the python documentation at
> http://docs.python.org/lib/typesseq-strings.html
Excellent. Thanks. Has this been around long? I "learned" Python in
the 1.6 days iirc, but haven't done much except simple scripting with
it since...
-tom!
--
h
I'm using this package that I can't import on startup, instead needing
to wait until some initialization takes place so I can set other
things up so that I can subsequently import the package and have the
"startup needs" of that package met.
Specifically this has to do with the interaction between
Simon Forman wrote:
> strings have a count() method.
thanks!
For enrichment purposes, is there a way to do this sort of thing with
a generator? E.g. something like:
def SentenceGenerator():
words = ['I', 'have', 'been', 'to', 'the', 'fair']
for w in words:
yield w
message = "%s %
I have some code to autogenerate some boilerplate code so that I don't
need to do the tedious setup stuff when I want to create a new module.
So, my script prompts the user for the module name, then opens two
files and those files each get the contents of one of these functions:
def GetPyContents
Carl J. Van Arsdall wrote:
> Because of the GIL only one thread can actually run at a time.
I've recently been wondering about this, since in the work I do, a lot
of time is spent doing disk I/O. So if I want the UI to remain
responsive, I could spawn an IO thread to handle requests, and do a
pr
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