his purely abstract philosophy?
Jeff Shannon
Technician/Programmer
Credit International
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n letting them script it in Python is a perfectly valid
(and probably quite desirable) approach.
Jeff Shannon
Technician/Programmer
Credit International
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one of Python's RAD tools (Boa
Constructor, or maybe PythonCard, as examples) you'd be able to get
very nice results.
Jeff Shannon
Technician/Programmer
Credit International
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#x27;t
be too horrible on resources/management, and that he shouldn't be so
afraid to try something new...
Jeff Shannon
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h requires complex inheritance trees. In Python, an
object is whatever type it acts like -- behavior is more important
than declared type, so there's no value to having a huge assortment of
potential types. Deep inheritance trees only happen when people are
migrating from Java. ;)
Jeff
odes of expression, different
ways of approaching the same problem. That's *why* we have so many
different programming languages -- because no single approach is the
best one for all problems, and knowing multiple approaches helps you
to use your favored approach more effectively.
J
John Machin wrote:
Jeff Shannon wrote:
[...] If each record is CRLF terminated, then
you can get one record at a time simply by iterating over the file
("for line in open('myfile.dat'): ..."). You can have a dictionary
classes or factory functions, one for each record type
), then you can give D's
__init__() a B parameter that defaults to None.
Jeff Shannon
Technician/Programmer
Credit International
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John Machin wrote:
Jeff Shannon wrote:
[...] For ~10 or fewer types whose spec
doesn't change, hand-coding the conversion would probably be quicker
and/or more straightforward than writing a spec-parser as you
suggest.
I didn't suggest writing a "spec-parser". No (mechanical)
te, and you have the
very essence of object-oriented programming.
(What you describe here *is* object-oriented programming, you're just
trying to avoid the 'class' statement and use module-objects where
'traditional' OO would use class instances.)
Jeff Shannon
Techn
just for this!
Normally it's a large round button, with perhaps a green backlight.
Press the button and hold it in for about 3 seconds, and the rest of
your code/writing will be ignored just as it should be.
Jeff Shannon
Technician/Programmer
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our GUI widgets directly
from the worker (i/o) thread -- very few GUI toolkits are threadsafe,
so you need to make all GUI calls from a single thread.
Jeff Shannon
Technician/Programmer
Credit International
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me size for your
test is a reflection of buffering. The next question is, which
provides the most *conceptual* simplicity? (The answer to that one, I
think, depends on how your brain happens to see things...)
Jeff Shannon
Technician/Programmer
Credit International
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Christian Dieterich wrote:
On Dé Céadaoin, Ean 26, 2005, at 17:09 America/Chicago, Jeff Shannon wrote:
You could try making D a container for B instead of a subclass:
Thank you for the solution. I'll need to have a closer look at it.
However it seems like the decision whether to do
Christian Dieterich wrote:
On Déardaoin, Ean 27, 2005, at 14:05 America/Chicago, Jeff Shannon wrote:
the descriptor approach does. In either case, the calculation happens
as soon as someone requests D.size ...
Agreed. The calculation happens as soon as someone requests D.size. So
far so good
flamesrock wrote:
I should also mention that I'm using
version 2.0.1 (schools retro solaris machines :( )
At home (version 2.3.4) it prints out 'True' for the above code block.
That would explain it -- as /F mentioned previously, the special case
for None was added in 2.1
On Thu, Jan 27, 2005 at 06:38:22AM -0500, Tim Daneliuk wrote:
> Is it possible to underline more than a single character as I am doing
> with the 'underline=0' above. I tried 'underline=(0,2)' but that didn't
> work.
No.
Jeff
pgpFCNSGSpXA9.pgp
D
) and when it's
imported ('python -c "import opt_newlogin"')
Jeff
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be an issue in the vast majority of cases, but I'm naturally
curious :)
Disk access should be buffered, possibly both at the C-runtime level
and at the file-iterator level (though I couldn't swear to that). I'm
sure that the C-level buffering happens, though.
Jeff Shannon
Technic
You might also want to try out Spyce.
http://spyce.sourceforge.net/index.html
It works in proxy mode, with mod_python, or even as cgi.
Some examples:
http://spyce.sourceforge.net/eg.html
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for item in lst:
if item is True: return True
if item is False: answer = False
return answer
But yeah, the original, straightforward way is probably enough clearer
that I wouldn't bother with anything else unless lists might be long
enough for performance to matter.
Je
Jeremy Bowers wrote:
On Fri, 04 Feb 2005 16:44:48 -0500, Daniel Bickett wrote:
[ False , False , True , None ]
False would be returned upon inspection of the first index, even
though True was in fact in the list. The same is true of the code of
Jeremy Bowers, Steve Juranich, and Jeff Shannon. As
ating dictionaries that'll be passed into functions, create class
instances.
class MyClass(object):
def __init__(self, **kwargs):
for key, val in kwargs:
setattr(self, key, val)
def fun(self):
self.z = self.y + self.x
a = MyClass(x=1, y=2)
a.fun()
print a.z
Je
rpreter and
try fiddling with things. You've got a lot of subexpressions there;
pick some values and try each subexpression, one at a time, and take a
look at what you get.
I bet that it won't take you long to figure out why you're not getting
the result you expect.
J
I wrote the following module to test the behavior of PyInstance_New. I
called it something like this:
import vedel
class k:
def __del__(self): print "deleted"
vedel.g(k)
I get output like:
after creation, x->refcnt = 1
doing decref
deleted
after decref
Unles
On Tue, Jun 21, 2005 at 08:13:47AM -0400, Peter Hansen wrote:
> Xah Lee wrote:
> > the doc seems to suggest that eval is only for expressions... it says
> > uses exec for statements, but i don't seem to see a exec function?
>
> Because it's a statement: http://docs.python.org/ref/exec.html#l2h-563
s, then break when you go into production and have
non-ASCII strings.
Jeff
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listdir_joined(path) if os.path.isfile(x)]
Jeff
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def until(pred):
yield None
while True:
if pred(): break
yield None
def example():
i = 0
for _ in until(lambda: x==0):
x = 10 - i
i += 1
print x, i
example()
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t; items in the output contain one of the
duplicated items from the input.
Jeff
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label container used to semantically group related
widgets.
"Frame" widgets are simply containers which are often useful for making
the screen layout work the way you want with pack and grid.
Jeff
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Tkinter.Frame instances are not created with "geometry" or "title"
attributes. Whatever 'classtitle' and 'classtitle2' are, they are not
written to work with Tkinter.Frame instances.
Jeff
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maybe you can at least push this into a single convenience function...
def destupid(x, constructor=tuple, sequencetypes=(tuple, list)):
if x is None: return constructor()
if isinstance(x, sequencetypes): return x
return constructor((x,))
Jeff
pgpC9L79OCj2p.pgp
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he
same. Only if the dictionary is extremely large does the difference
matter. (or if you're using an older version of Python without the
iteritems method)
Jeff
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This has been discussed before. One thread I found was
http://mail.python.org/pipermail/python-list/2003-June/170526.html
The advice in that message might work for you.
Jeff
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ave an /etc/profile.d where you can drop a file
that will be executed at login, too. This will, of course, be executed
with the user's privilege level. Another problem with this approach is
that /etc/profile is executed for a "login shell", but a graphical login
is not a login
This stupid code works for modules, but not for packages. It probably has bugs.
import marshal, types
class StringImporter:
def __init__(self, old_import, modules):
self._import = old_import
self._modules = modules
def __call__(self, name, *args):
module = self.
e character after the un-doubled backslash is one with special
meaning (including the commonly-seen \r and \t, but also other letters)
then you'll get a pathname and an error that leave you scratching your
head.
Jeff
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probably by using REST. This stupid program puts a 200 line file by
sending 100 lines, then using REST to set a resume position and sending
the next 100 lines.
import getpass, StringIO, ftplib
lines = ["Line %d\n" % i for i in range(200)]
part1 = "".join(lines[:100])
part2 = "".join(lines[:100])
y(y)
else:
perform_next_step_with_both(x, y)
and at the very least duplicate the code for calculating 'y', possibly
re-doing a lot of work at runtime too.
Jeff
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exist...: -1
C:\TMP\example>type nonexist
The system cannot find the file specified.
C:\TMP\example>type exist
C:\TMP\example>
As you can see, not only does Windows think that "exist" exists, but it can
successfully "type" its
python-xlib includes an implementation of the xtest extension, which is
enabled on most users' X servers, and can be used to send arbitrary
keyboard or mouse events.
jeff
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{ import testfile }
assuming it's on the module search path. Look in the python
docs about Modules to get all the info you need.
--
Jeff Hobbs, The Tcl Guy
http://www.ActiveState.com/, a division of Sophos
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s no
relationship to the headers of the actual message---it simply calls
rcpt() once for each address in to_addrs. The example in the docstring
doesn't even *have* a To: header in the message!
Jeff
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ion; perhaps the
intention is that programmers should not rely on implementation details.
Thanks in advance,
Jeff
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Here's a simple module for doing progress reporting. On systems without
curses, it simply uses "\r" to return the cursor to the first column.
On systems with curses, it also clears to the end of the line. This
means that when the progress message gets shorter, there aren't droppings
left from the
Slot=DIMM0/J11, ConfigurationType=2
Memory 1 Summary=0, Speed=PC3200U-30330, Type=DDR SDRAM, Size=512,
Slot=DIMM1/J12, ConfigurationType=2
the result is out of order because the result of calling .items() on a
dict is in an arbitrary order.
Jeff
s = [['Memory', '0', 'Summ
Raymond,
Thanks for your answers, which even covered the question that I didn't ask
but should have.
"A Python list is not an array()\n" * 100 :)
Jeff
"Raymond Hettinger" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> [Jeff Melvaine]
>
Bengt,
Thanks for your informative reply, further comments interleaved.
"Bengt Richter" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> On Mon, 11 Jul 2005 02:37:21 +1000, "Jeff Melvaine"
> <[EMAIL PROTECTED]> wrote:
>
>>I note that
on 2.1 if I remember correctly.
Jeff
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s for more information.
Jeff
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cause there *is* no standard I/O for a windows service.
You should be able to execute code like
import sys
sys.stdout = sys.stderr = open("some.log", "w")
if you have code that expects the standard output files to be available.
You could also open sys.stdin in a sim
and verse on MSDN, more power to you. This page
implies that the "standard handles" are only available when there is a
console for the application.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/getstdhandle.asp
Jeff
pgpD1VX32k6bY.pgp
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p1256 cp1257 cp1258 cp874
Windows is clearly doing something clever.
Jeff
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or decides
they only want to sell a new, incompatible product. What do you do with
your existing product when that happens? Re-train on a new platform,
and re-write from scratch?
Just say no to proprietary software.
Jeff
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f()
>>> if e: print e[274]
1
I have written a standalone Python module that reads and changes the EXIF
orientation data. You can view it here:
http://unpy.net/cgi-bin/viewcvs.cgi/aethertool/disorient.py?rev=1.2&content-type=text/vnd.viewcvs-markup
It is available under the terms of th
but instead I bought a digital camera with an orientation sensor.
Jeff
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Zope 3, far and away. There's great documentation, quite a few load
handling options (different types of caching and ZEO to distribute ZODB
caches to multiple machines). Zope 3 aggressively favors small
cooperating objects (Zope 2 was inheritance heavy, making
customization, extension, etc, a big c
thout any problem. (RedHat 9, Python 2.2)
>>> len(commands.getoutput("dd if=/dev/zero bs=512 count=512000 2>/dev/null"))
262144000
>>> 512 * 512000
262144000
Jeff
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our case, I suspect it is the operating system,
not Python.
Jeff
import os, sys, time
def serve():
while 1:
data = struct.pack("!d", time.time())
os.write(1, data)
time.sleep(1)
def recv(fileno):
while 1:
data = struct.unpack("!d", o
import os
os.system(r"net use z: \\computer\folder")
Something in the win32net module of win32all may be relevant if you
don't want to do it through os.system:
http://aspn.activestate.com/ASPN/docs/ActivePython/2.4/pywin32/win32net__NetUseAdd_meth.html
Jeff
pgp7mEoPdAfNP.
in fact, see this thread, it may have something useful for you:
http://mail.python.org/pipermail/python-win32/2003-April/000959.html
Jeff
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If you are using Unix, and all you have is the file object, you can use
os.fchmod(outfile.fileno(), 0700)
Jeff
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gen.do(env_params)
Jeff
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rd'
it worked for me. In another recent thread, a different poster claimed
it didn't work, so your results may vary.
Jeff
[1] http://pexpect.sourceforge.net/
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)
self.b1.pack(side=BOTTOM, anchor=E, padx=4, pady=4)
root = Tk()
app = testApp2(root)
root.mainloop()
Jeff
PS thanks for including a full, runnable program in your post!
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s as are in the matched thing, or ' ' otherwise, so that line
numbers remain unchanged.
Basically, the regular expression is a tokenizer, and replace() chooses
what to do with each recognized token. Things not recognized as tokens
by the regular expression are left unchanged.
Jeff
PS t
On Thu, Jul 28, 2005 at 08:42:57AM -0700, nicolas_riesch wrote:
> And a last question: can I call this "enc" function from multiple
> threads ?
Yes.
Jeff
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. If you feel comfortable doing it, dive
in and improve the documentation of poplib. Submitting a patch to the
patch tracker on sf.net/projects/python is probably the best way to do
this, if you have the necessary knowledge of cvs to produce a patch.
Jeff
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ovement.
Even better if the keyword 'auto' could be made optional! (Of course,
this is another break with C, where the declaration
auto i;
makes 'i' an int)
And what's this got to do with Python? I dunno. Sorry.
Jeff
[1]
http://www.informit.com/content/image
elnet is when the other side closes
the socket.
Jeff
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elif f[i] > HAVE_ARGUMENT:
i += 3
else:
i += 1
return result
>>> import franz
>>> franz.find(y.__class__)
['__module__', 'who1', '__init__', '__doc__', '_b']
Jeff
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ly:
http://mail.python.org/mailman/listinfo/pycon-organizers
Please read the archives to come up to speed on the various viewpoints.
-Jeff Rush
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Robert Kern wrote:
> Robert Kern wrote:
>
>> Christopher Subich wrote:
>>
>>
>>> Dear Zeus no. Find can be defined as:
>>> def find(self, test=lambda x:1):
>>>try:
>>> item = (s for s in iter(self) if test(s)).next()
>>>except StopIteration:
>>> raise ValueError('No matching i
Robert Kern wrote:
> (s for s in iter(self) is test(s)) is a generator expression. It is
> roughly equivalent to
>
> def g(self, test=lambda x: True):
> for s in iter(self):
> if test(s):
> yield s
>
> Now, if I were to do
>
> item = g(self, test).next()
>
> the generato
Atila Olah wrote:
> I'm working on a project to implement a simple cross-platform file
> sharing protocol (using Python) that is similar to HTTP, and I have to
> write a GUI for Windows and Linux. But let's start with the harder one:
> Windows.
>
> My question is: How do I implement a virtual part
Bryan Olson wrote:
>
> Atila Olah wrote:
> > My question is: How do I implement a virtual partition that acts like a
> > real file-system and is compleatly transparent to other programs?
> > Should I make a virtual file allocation table for a FAT32 partition or
> > simulate an NTFS? Or even fu
Mike Meyer wrote:
> Well, the only thing that subversion does that I'd call bad is leave
> turds in my development directory. I'm tired of having to tell
> commands to ignore .svn files. Of course, Perforce is the only source
> control system I know of that doesn't do this.
ClearCase is really goo
Jerry He wrote:
> Hi,
> suppose I have the following string
>
> cmdstr = "b = lambda s: s*s"
>
> Is there a way to execute this string other than
> copying it onto a file and then importing it?
>>> exec "b = lambda s: s*s"
>>> b
at 0x4d69cc>
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Bryan Olson wrote:
> Jeff Schwab wrote:
> > You don't have to pay Microsoft to develop a Windows-compatible
> > filesystem. See http://ubiqx.org/cifs/.
>
> That's a different usage of "filesystem" than what is at issue
> here.
I agree that you &
Harlin Seritt wrote:
> I am trying to find some matches and have them put into a list when
> processing is done. I'll use a simple example like email addresses.
>
> My input is the following:
> wordList = ['myname1', '[EMAIL PROTECTED]', '[EMAIL PROTECTED]',
> '[EMAIL PROTECTED]', '[EMAIL PROTECT
Calvin Spealman wrote:
> On 7/31/05, James Dennett <[EMAIL PROTECTED]> wrote:
>
>>Peter Hansen wrote:
>>
>>
>>>Steven D'Aprano wrote:
>>>
>>>Given that ZODB and PySQLite are simply Python extension modules, which
>>>get bundled by your builder tool and are therefore installed
>>>transparently alon
Regex questions seem to be rather resistant to googling.
My regex currently looks like - 'FOO:.*\n\n'
The chunk of text I am attempting to locate is a line beginning with
"FOO:", followed by an unknown number of lines, terminating with a
blank line. Clearly the ".*" phrase does not match the sing
bruno modulix wrote:
> bash is a scripting language,
Bash is a shell. It is frequently used for scripting, but that is only
a secondary purpose.
> javascript is a scripting language,
Yes, but it's a particularly specialized one.
> perl is a scripting language,
Blasphemy! Perl is a dynamic l
John Machin wrote:
> Search for r'^something' can never be better/faster than match for
> r'something', and with a dopey implementation of search [which Python's
> re is NOT] it could be much worse. So please don't tell newbies to
> search for r'^something'.
How else would you match the beginn
Magnus Lie Hetland wrote:
> Just saw this on the BBC World program Click Online:
>
> http://bbcworld.com/content/template_clickonline.asp?pageid=665&co_pageid=6
>
> I must say, I think this is the first time I've heard Python discussed
> on TV at all... Cool :)
>
> (Now maybe I'll have to fini
Ray wrote:
> Devan L wrote:
>
>>Fausto Arinos Barbuto wrote:
>>
>>>Ray wrote:
>>>
>>>
1. Where are the access specifiers? (public, protected, private)
>>>
>>>AFAIK, there is not such a thing in Python.
>>>
>>>---Fausto
>>
>>Well, technically you can use _attribute to mangle it, but technic
[EMAIL PROTECTED] wrote:
> Greetings-
> This is on Linux... I have a daemon running as root and I want to
> execute another Python program as another user (a regular user). I have
> the name of the user and can use the 'pwd' and 'grp' modules to get
> that user's user and group ids. What I don't un
[EMAIL PROTECTED] wrote:
> Thanks, that looks very promising...
> Is there a solution for pre-Python v2.4? I have to have code that works
> on 2.x, 0<=x<=4. Do I just use the os.popen instead?
import os
def run_as(username):
pipe = os.popen("su %s" % username, 'w')
pipe.write("w
[EMAIL PROTECTED] wrote:
> Hello, I know this topic was discussed a *lot* in the past, sorry if it
> bores you...
>
>>From the Daily Python-URL I've seen this interesting Floating Point
> Benchmark:
> http://www.fourmilab.ch/fourmilog/archives/2005-08/000567.html
>
> This is the source pack:
> ht
Christopher Subich wrote:
> [EMAIL PROTECTED] wrote:
>
>> Are you kidding? You are going to MANDATE spaces?
>
>
> Actually, future whitespace rules will be extensive. See:
> http://64.233.187.104/search?q=cache:k1w9oZr767QJ:www.artima.com/weblogs/viewpost.jsp%3Fthread%3D101968
>
>
> (google
could ildg wrote:
> In re, the punctuation "^" can exclude a single character, but I want
> to exclude a whole word now. for example I have a string "hi, how are
> you. hello", I want to extract all the part before the world "hello",
> I can't use ".*[^hello]" because "^" only exclude single char "
mhenry1384 wrote:
> On WinXP, I am doing this
>
> nant.exe | python MyFilter.py
>
> This command always returns 0 (success) because MyFilter.py always
> succeeds.
...
> How do I set the return code from MyFilter.py based on the return of
> nant.exe? Is this possible? I have googled around for
Steve Holden wrote:
> Robert Kern wrote:
>
>> Jon Hewer wrote:
>>
>>> Is there an online database of non standard library modules for Python?
>>
>>
>>
>> http://cheeseshop.python.org/pypi
>>
> While cheeseshop might resonate with the Monty Python fans I have to say
> I think the name sucks in ter
You might want to check out spyce. It uses a server page model (like
jsp and php) so you can embed python in html. It has the standard stuff
you would need for making a web site (session support, etc) and also
contains features like custom tags.
http://spyce.sourceforge.net/
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max(01)* wrote:
> i was wondering, what's the simplest way to echo the standard input to
> the standard output, with no modification.
...
> ps: in perl you ca do this:
>
> ...
> while ($line = )
> {
> print STDOUT ("$line");
> }
> ...
I guess you could, but there wouldn't be much point.
Christoph Rackwitz wrote:
> i guess, it is pythonchallenge.com level 10?
> if so, i used this thing:
>
> import re
> def enc(s):
> return ''.join('%s%s' % (len(a[0]),a[0][0]) for a in
> re.findall('((.)\\2*)', s))
>
Don't do that!
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Eric Lavigne wrote:
> Here is a shell command (MS-DOS):
> debug\curve-fit output.txt
>
> And here is a Python script that *should* do the same thing (and almost
> does):
Python equivalent is roughly:
import os
import subprocess
subprocess.Popen([os.path.join("debug", "
danilo wrote:
>
> Salve,
>
> qualcuno sa se è ancora in fase di sviluppo e qual'è il sito di
> riferimento?
>
> Grazie
> Danilo
Gesundheit.
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Jorgen Grahn wrote:
> On Sat, 20 Aug 2005 15:19:55 -0400, Roy Smith <[EMAIL PROTECTED]> wrote:
>
>>In article <[EMAIL PROTECTED]>,
>> [diegueus9] Diego Andrés Sanabria <[EMAIL PROTECTED]> wrote:
>>
>>
>>>Hello!!!
>>>
>>>I want know if python have binary trees and more?
>>
>>Python does not come wi
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