Robert Kern wrote:
>>> from numpy import *
>>> y = [116, 114, 121, 32, 116, 104, 105, 115]
>>> a = array(y, dtype=uint8)
>>> z = a.tostring()
>>> z
'try this'
Very nice! Thanks also to Paul and Travis!
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
>>> y
[116, 114, 121, 32, 116, 104, 105, 115]
>>> z=''.join(chr(yi) for yi in y)
>>> z
'try this'
What is an efficient way to do this if y is much longer?
(A numpy solution is fine.)
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
Bruno wrote:
> This is usually known as a 'factory method'. You do realise that both
solutions are *not* strictky equilavent, do you?
Your point I believe is that after inheritance the factory method
in the subclass will still
return MyClass()
but will return an instance of the subclass if I
retu
Instances of MyClass have a method that
returns another instance. Ignoring the details
of why I might wish to do this, I could
return MyClass()
or
return self.__class__()
I like that latter better. Should I?
Should I do something else altogether?
Thanks,
Alan Isaac
--
http://mail.python.org/
I have not seen this posted and I kind of like it.
Shared for entertainment value only.
Alan Isaac
PS Easily adapted if the residual
group is not desired.
def groupsofsize(iterable,size):
itr = iter(iterable)
c=count()
for k,it in groupby(itr,lambda x:c.next()//size):
yield tup
Paul M. wrote:
> Random access to item in list/set when item exists
> set -> 0.000241650824337
> list -> 0.0245168031132
>
> Random access to item in list/set when item does not exist
> set -> 0.000187733357172
> list -> 0.522086186932
OK, that's a much better set of answers
including to questi
> Alan Isaac wrote:
> > The current situation is: use a loop because the obvious generator
> > approach is not efficient.
"Fredrik Lundh" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> "not efficient" compared to what ?
I already guess that I've missed your point, but to prove it
Is it expected for access to set elements to be much
slower than access to list elements? Explanation?
Thanks,
Alan Isaac
>>> t1=timeit.Timer("for i in set(xrange(1)):pass","")
>>> t2=timeit.Timer("for i in list(xrange(1)):pass","")
>>> t1.timeit(1000)
9.806250235714316
>>> t2.timeit(1000
Does George's example raise the question:
why do dictionaries not implement efficient creation
for two common cases?
- Making a dict from two sequences of the same length.
- Making a dict from a sequence and a function
(as in George's example in this thread).
The current situation is:
use a loo
This is important for my move to Python 2.5,
so I thought others might want to know...
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Alan Isaac" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Where does one get the
> "What's New" document for Python 2.5?
> http://docs.python.org/dev/whatsnew/whatsnew25.html
> pretends to hold it, but the links are corrupt.
OK, here it is:
http://docs.python.org/whatsnew/whatsn
Where does one get the
"What's New" document for Python 2.5?
http://docs.python.org/dev/whatsnew/whatsnew25.html
pretends to hold it, but the links are corrupt.
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
> Alan Isaac wrote:
> > Suppose x and y are ints in moduleA.
> >
> > If I put
> > from __future__ import division
> > in moduleA then x/y will produce the truediv result.
> >
> > If I put
> > from __future__ import division
> > in moduleB
> > and
> > from moduleB import *
> > in module A
> > then x
Suppose x and y are ints in moduleA.
If I put
from __future__ import division
in moduleA then x/y will produce the truediv result.
If I put
from __future__ import division
in moduleB
and
from moduleB import *
in module A
then x/y will NOT produce the truediv result
(in moduleA).
Why?
And is ther
Thanks to all for the suggestions and much else
to think about.
Summarizing:
Those who were willing to consider a database suggested:
anydbm
Gadfly
SQLite (included with Python 2.5)
Schevo
Some preferred using the file system.
The core suggestion was to choose a directory structure
along with sp
I have no experience with database applications.
This database will likely hold only a few hundred items,
including both textfiles and binary files.
I would like a pure Python solution to the extent reasonable.
Suggestions?
Thank you,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/pyth
Le mercredi 06 septembre 2006 16:33, Alan Isaac a écrit :
>> Suppose a class has properties and I want to change the
>> setter in a derived class. If the base class is mine, I can do this:
>> http://www.kylev.com/2004/10/13/fun-with-python-properties/
>> Should I? (I.e., is that a good solution?)
Suppose a class has properties and I want to change the
setter in a derived class. If the base class is mine, I can do this:
http://www.kylev.com/2004/10/13/fun-with-python-properties/
Should I? (I.e., is that a good solution?)
And what if I cannot change the base class?
How to proceed then?
Than
> Alan Isaac wrote:
> > are method calls actually calls of the class's functions?
"Bruno Desthuilliers" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Depends on how the method was associated to the instance (you can set
> methods on a per-instance property), but in the general case
Thanks to both Roberto and George.
I had considered the recursive solution
but was worried about its efficiency.
I had not seen how to implement the numpy
solution, which looks pretty nice.
Thanks!
Alan
--
http://mail.python.org/mailman/listinfo/python-list
> Alan Isaac wrote:
> > When I create an instance of a class,
> > are the class's functions *copied* to create the methods?
> > Or are method calls actually calls of the class's functions?
"Diez B. Roggisch" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> On the class functions. You
I have a list of lists, N+1 deep.
Like this (for N=2):
[[['r00','g00','b00'],['r01','g01','b01']],[['r10','g10','b10'],['r11','g11'
,'b11']]]
I want to efficiently produce the same structure
except that the utlimate lists are replaced by a chosen (by index) item.
E.g.,
[['r00','r01'],['r10','r11']
When I create an instance of a class,
are the class's functions *copied* to create the methods?
Or are method calls actually calls of the class's functions?
I am sure this is both obvious and FAQ,
but I did not find a clear answer
(e.g. here
http://docs.python.org/tut/node11.html#SECTION001134
I'm aware of
http://cheeseshop.python.org/pypi/pytnef/
but it uses the tnef utility, and I'd like a pure Python solution
(along the lines of http://www.freeutils.net/source/jtnef/ ).
Is there one?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Jacob Hallen" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Unfortunately there is a side effect to slots. They change the behaviour
of
> the objects that have slots in a way that can be abused by control freaks
> and static typing weenies. This is bad, because the contol freaks s
Somewhat OT:
Just wondering if anyone is doing something cool
with the Python support in Mahogany mail.
If so, please describe it or post some code.
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
http://www.american.edu/econ/notes/soft.htm#EDITORS
has some relevant discussion and suggestions.
Cheers,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Daniel Mark" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I want to draw some shapes, such as lines, circles on an image.
http://www.pythonware.com/library/pil/handbook/psdraw.htm
hth,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
> Alan Isaac wrote:
> > I have a subclass of dict where __getitem__ returns None rather than
> > raising KeyError for missing keys. (The why of that is not important
for
> > this question.)
"Bruno Desthuilliers" <[EMAIL PROTECTED]> wrote:
> Well, actually it may be important... What's so wrong wi
I have a subclass of dict where __getitem__ returns None rather than
raising KeyError for missing keys. (The why of that is not important for
this question.)
I was delighted to find that __contains__ still works as before
after overriding __getitem__.So even though instance['key']
does not ra
Suppose I have inherited the structure
PackageFolder/
__init__.py
mod1.py
SubPackageFolder/
__init__.py
mod2.py
mod3.py
When mod1 is run as a script,
I desire to import either mod2 or mod3 but not both
conditional on an option detected b
Alan wrote:
> I do not want to make any assumptions about
> this particular package being on sys.path.
> (I want a relative import, but cannot assume 2.5.)
I should mention that to get around this I have
been using
sys.path.append(os.path.split(sys.argv[0])[0])
in the script I care most about. I
Simon Forman wrote:
> I would assume (but I haven't checked) that this should work as long as
> delmepy (in your case PackageFolder) was somewhere on sys.path.
Sorry that was not clear:
I do not want to make any assumptions about
this particular package being on sys.path.
(I want a relative import
Suppose I have inherited the structure
PackageFolder/
__init__.py
mod1.py
mod2.py
SubPackageFolder/
__init__.py
mod3.py
and mod3.py should really use a function in mod2.py.
*Prior* to Python 2.5, what is the best way to access that?
(Please assu
To access the doc string of a property,
I have to use the class not an instance.
Why?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
> > (I was using *small* integers).
"Fredrik Lundh" <[EMAIL PROTECTED]> wrote:
> "small integers" is what the phrase "small integers" in the "small
> integers" and "small integers" parts of my reply referred too, of course.
But aren't "*small* integers" likely to be smaller than "small integers
alpha = string.lowercase
x=(a+b+c for a in alpha for b in alpha for c in alpha)
--
http://mail.python.org/mailman/listinfo/python-list
"Rob Cowie" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> alpha = ['a','b','c','d'] #shortened for brevity
> alpha2 = ['a','b','c','d']
> alpha3 = ['a','b','c','d']
>
> def generator():
> for char in alpha:
> for char2 in alpha2:
> for char3 in alpha3:
> yield c
"Johann C. Rocholl" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> What license would you suggest?
I recommend that you choose the license that will best achieve
your long run goals for the code. As I understand them, and
as I understand your application and software development,
> Em Sex, 2006-06-09 às 12:30 -0400, Alan Isaac escreveu:
> > It's your code, so you get to license it.
> > But if you wish to solicit patches,
> > a more Pythonic license is IMHO more likely
> > to prove fruitful.
"Felipe Almeida Lessa" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED
"vasudevram" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> http://sourceforge.net/projects/xtopdf
Serendipity:
I was just looking for this functionality.
Thanks!
So here is an idea for a great enhancement:
rst -> PDF
The good news: the project is all Python,
so you will only have
I am just starting to think about image processing.
What are the overlaps and differences in intended
functionality between FreeImagePy and PIL?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Boris Borcic" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> after a while trying to find the legal manner to file numpy bug reports,
> since it's a simple one, I thought maybe a first step is to describe the
bug
> here. Then maybe someone will direct me to the right channel.
>
> So
Thanks for all the replies.
A couple of comments.
1. I think the usefulness of an argmax built-in can be assessed
by looking at other languages (and e.g. at numpy). So I do not
buy the "not needed" argument as presented. More like "haven't
got around to it," I'm thinking.
2. The particular use
1. Why is there no argmax built-in?
(This would return the index of the largest element in a sequence.)
2. Is this a good argmax (as long as I know the iterable is finite)?
def argmax(iterable): return max(izip( iterable, count() ))[1]
3. If this is the only place in a module where I need count a
> Andy Sy wrote:
> >Don't be evil - always configure your editor to
> >convert tabs to true spaces.
"achates" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Yet another space-indenter demonstrates that problem actually lies with
> people who think that tab == some spaces.
Exactl
"John Salerno" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Is there a way to assign multiple variables to the same value, but so
> that an identity test still evaluates to False?
Make sure the value is not a singleton.
Assign them one at a time.
>>> w=1000
>>> x=1000
>>> w==x
Tr
"Diez B. Roggisch" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> it's considered bad style to use range if all you want is a
> enumeration of indices, as it will actually create a list of the size you
> specified. Use xrange in such cases.
I'm pretty sure this distinction goes away
"RonnyM" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> e.g. y = [ 1, 2, 3, 4, 5, 6 ,7 ,8, 9 ]
> ybar = [ 1, (1 + 3)*.5,(2 + 4)*.5,(3 + 5)*.5,..., (n-1 + n+1)*.5 ], n =
> 1,...len(y) -1
> How do I make a vectorized version of this, I will prefer not to
> utilize Map or similar funct
"Ralph H. Stoos Jr." <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> HELP PLEASE: What is wrong with this?File "autotp.py", line 21
> ready = raw_input("Ready to proceed ? TYPE (y)es or (n)o: ")
> ^
Probably the parenthesis you forgot to close on the preceding line ...
C
Donn Cave, [EMAIL PROTECTED]
> I suppose it isn't supported by the mailbox module basically because
> it isn't all that commonly encountered. It may be more common on mail
> servers, but there it's email net protocol data, POP or IMAP. If
> Mahogany has been using this format for `local' folders
"Alan Isaac" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Should I be able to access mail messages in Mahogany mail's mbx
> format using the Python mailbox module? If so, can someone
> please post a working example? If not, can you please
> point me to documentation of the file for
Should I be able to access mail messages in Mahogany mail's mbx
format using the Python mailbox module? If so, can someone
please post a working example? If not, can you please
point me to documentation of the file format or better yet
Python code to parse it?
Thanks,
Alan Isaac
--
http://
Alan asked:
> > 2. If I really want a value True will I ever go astray with the test:
> > if a is True:
> > >>> a = True
> > >>> b = 1.
> > >>> c = 1
> > >>> a is True, b is True, c is True
> > (True, False, False)
"Ziga Seilnacht" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I th
"Ziga Seilnacht" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> >>> a = 1
> >>> b = 1
> >>> a == b
> True
> >>> a is b
> False
Two follow up questions:
1. I wondered about your example,
and noticed
>>> a = 10
>>> b = 10
>>> a is b
True
Why the difference?
2. If I really w
"Aahz" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Because __slots__ breaks with inheritance.
I believe that was the point of Ziga's example,
which I acknowledged as a good one in my reply.
So there still appears to be this single reason, which
applies if your class may be subcla
"Ziga Seilnacht" <[EMAIL PROTECTED]> wrote:
> If you want to restrict attribute asignment, you should use the
> __setattr__ special method, see:
> http://docs.python.org/ref/attribute-access.html
That "should" is what I am asking about. If I understand,
in the simplest case, you want me to say so
1. "Without a __dict__ variable,
instances cannot be assigned new variables not listed in the __slots__
definition."
So this seemed an interesting restriction to impose in some instances,
but I've noticed that this behavior is being called by some a side effect
the reliance on which is considered
"Laszlo Zsolt Nagy" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I would like to use a numerical solver for a specific problem.
Another possibility:
http://nlpy.sourceforge.net/
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Benji York" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Here's a flagrant hack:
Admiration wins out over revulsion. ;-)
Thanks,
Alan Isaac
PS Here's the motivation. Python closely resembles pseudocode. With
a very little LaTeX hacking, it is often possible to write algorith
> Alan Isaac wrote:
> > I would like to be able to define a loop statement
> > (nevermind why) so that I can write something like
> >
> > loop 10:
> > do_something
> >
> > instead of
> >
> > for i in range(10):
> > do_something
> >
> > Possible? If so, how?
"Jeffrey Schwab" <[EMAIL PROT
I would like to be able to define a loop statement
(nevermind why) so that I can write something like
loop 10:
do_something
instead of
for i in range(10):
do_something
Possible? If so, how?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Chris Mellon" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> As someone who does a tremendous amount of event-driven GUI
> programming, I'd like to take a moment to speak out against people
> using us as a testament to the virtues of lamda. Event handlers are
> the most important
> Alan Isaac wrote:
> >>> #evaluate polynomial (coefs) at x using Horner's rule
> >>> def horner(coefs,x): return reduce(lambda a1,a2: a1*x+a2,coefs)
> > It just cannot get simpler or more expressive.
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> But is it correct?
>>> Jibes against the lambda-clingers lead eventually to serious
>>> questions of style in regard to variable namespacing,
>>> lifespan, cleanup, and so on:
>>>
http://groups.google.com/group/comp.lang.python/browse_thread/thread/ad0e15cb6b8f2c32/
Alan Isaac <[EMAIL PROTECTED]> wrote:
"Cameron Laird" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Jibes against the lambda-clingers lead eventually to serious
> questions of style in regard to variable namespacing,
> lifespan, cleanup, and so on:
>
http://groups.google.com/group/comp.lang.python/browse_th
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> sufficiently similar
I think I understand your points now.
But I wanted to match these cases:
>>> import operator
>>> reduce(operator.add,[],42)
42
>>> reduce(operator.add,[1],42)
43
The idea is that the i-th yield of i
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I think that the test for an empty iterator makes ireduce() unintuitive.
OK.
I misunderstood you point.
But that is needed to match the behavior of reduce.
>>> reduce(operator.add,[],42)
42
Thanks,
Alan
--
http://mail.
"Carl Waldbieser" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Does anyone know of any good examples for writing client side code to
upload
> files over a secure FTP connection?
http://trevp.net/tlslite/
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'd rather have a second look whether the test is really needed.
That's too obscure of a hint.
Can you be a bit more explicit?
Here's an example (below).
You're saying I think that most of it is unnecessary.
Thanks,
Alan
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> You are in for a surprise here:
You got that right!
> >>> def empty():
> ... for item in []:
> ... yield item
> ...
> >>> bool(empty())
> True
Ouch.
> >>> bool(iter([]))
> True # python 2.3 and probably
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Of course nothing can beat a plain old for loop in terms of readability
and
> -- most likely -- speed.
Here are two versions, meant to be comparable.
Thanks,
Alan Isaac
def cumreduce(func, seq, init = None):
cr = seq
"Peter Otten" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> - allows arbitrary iterables, not sequences only
> - smaller memory footprint if sequential access to the items is sufficient
Sure; I meant aside from that.
> - fewer special cases, therefore
> - less error prone, e. g.
"Michael Spencer" <[EMAIL PROTECTED]> wrote in message
news:mailman.1054.1132707811.18701.python-> This can be written more
concisely as a generator:
>
> >>> import operator
> >>> def ireduce(func, iterable, init):
> ... for i in iterable:
> ... init = func(init, i)
> ...
> Michael Spencer wrote:
> > This can be written more concisely as a generator:
<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> If iterable has no elements, I believe the behaviour should be [init],
> there is also the case of init=None that needs to be handled.
Right. So it is "
"Duncan Booth" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> >>> aList = ['a', 1, 'b', 2, 'c', 3]
> >>> it = iter(aList)
> >>> zip(it, it)
> [('a', 1), ('b', 2), ('c', 3)]
That behavior is currently an accident.
http://sourceforge.net/tracker/?group_id=5470&atid=105470&func=detail
> Alan Isaac wrote:
>> Like SciPy's cumsum.
"Colin J. Williams" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Doesn't numarray handle this?
Sure.
One might say that numarray is in the process of becoming scipy.
But I was looking for a solution when these are available.
Something
<[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> He seems to want scanl
Yes. But it's not in Python, right?
(I know about Keller's version.)
Robert Kern wrote:
> Define better. More accurate? Less code?
Good point.
As Bonono (?) suggested: I'd most like a solution that
relies on a
What's the good way to produce a cumulative sum?
E.g., given the list x,
cumx = x[:]
for i in range(1,len(x)):
cumx[i] = cumx[i]+cumx[i-1]
What's the better way?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
"Fredrik Lundh" <[EMAIL PROTECTED]> wrote::
def grep(pattern, *files):
search = re.compile(pattern).search
for file in files:
for index, line in enumerate(open(file)):
if search(line):
print ":".join((file, str(index+1), line[:-1])
"hrh1818" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> There is a module named pymat avvailable from
> http://sourceforge.net/projects/pymat that provides a limited set of
> functions for intertfacing Python to Matlab.
I think that pymat was superceded by mlabwrap
http://mlabwrap
What's the standard replacement for the obsolete grep module?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
While pdftk is awesome
http://www.accesspdf.com/pdftk/
I am looking for a Python solution.
Just for PDF page extraction.
Any hope?
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
> > http://www.lag.net/paramiko/
"Alan Isaac" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> sock.settimeout(20)
> sock.connect((hostname, port))
> my_t = paramiko.Transport(sock)
> my_t.connect(hostkey=None ,username=userna
"Eric Nieuwland" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'm having a look at FTP/S right now. That's a little
> more complicated, but it seems doable.
> If I succeed, I guess I'll donate the stuff as an extension to ftplib.
Just found this:
http://trevp.net/tlslite/
I haven
"Casey Hawthorne" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> It's hard to make "complete" permutation generators, Knuth has a whole
> fascicle on it - "The Art of Computer Programming - Volume 4 Fascicle
> 2 - Generating All Tuples and Permutations" - 2005
Can you elaborate a
"Talin" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I wanted to share
> this: a generator which returns all permutations of a list:
Try this instead:
def permuteg(lst): return ([lst[i]]+x
for i in range(len(lst))
for x in permute(lst[:i]+lst[i+1:])) \
or [[]
"Alan Isaac" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> http://www.lag.net/paramiko/
> However it requires the PyCrypto module.
> http://www.amk.ca/python/code/crypto
>
> Can you briefly outline how to use this as a client
> to upload and down files from a server using SFTP?
OK
> David Isaac wrote:
> > I am looking for a pure Python secure ftp solution.
> > Does it exist?
"Andrew MacIntyre" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I recall coming across an extension package (pretty sure it wasn't pure
> Pyt
"Eric Nieuwland" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Do you want SFTP or FTP/S?
The latter.
> I'm having a look at FTP/S right now. That's a little
> more complicated, but it seems doable.
> If I succeed, I guess I'll donate the stuff as an extension to ftplib.
Great!
I am looking for a pure Python secure ftp solution.
Does it exist?
I would have thought that the existence of OpenSSL
would imply "yes" but I cannot find anything.
ftplib does not seem to provide any secure services.
I know about fptutil
http://codespeak.net/mailman/listinfo/ftputil
but that doe
Why is a MultiFile object not an iterator?
For example if
mfp = multifile.MultiFile(fp)I cannot dofor line in mfp:
do_somethingRelated:MultiFile.next seems badly named.(Something like
next_section would be better.)Is this just historical accident or am I
missing the point?Thanks,Alan Isaac
--
ht
Newbie question:
I have been generally open to the proposal that list comprehensions
should replace 'map', but I ran into a need for something like
map(None,x,y)
when len(x)>len(y). I cannot it seems use 'zip' because I'll lose
info from x. How do I do this as a list comprehension? (Or,
more gen
"niXin" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Can anyone direct me to where I can find free software to do the
following:
> Document Management Software
> ---
> 1. Written in PHP or Python
> 2. scanning feature - where I can scan a document
http://
"Ric Deez" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I have a list:
> L1 = [1,1,1,2,2,3]
> How can I easily turn this into a list of tuples where the first element
> is the list element and the second is the number of times it occurs in
> the list (I think that this is referred
Why don't tuples support an index method?
It seems natural enough ...
Thanks,
Alan Isaac
--
http://mail.python.org/mailman/listinfo/python-list
Alan Isaac wrote:
> Default parameter values are
> evaluated once when the function definition is
> executed. Where are they stored? ... Where is this documented?
Forgive any poor phrasing: I'm not a computer science type.
At http://www.network-theory.co.uk/docs/pytut/tut_26.html we read:
"The exe
Alan Isaac wrote:
> Default parameter values are evaluated once when the function definition
is
> executed. Where are they stored? ... Where is this documented?
Forgive any poor phrasing: I'm not a computer science type.
At http://www.network-theory.co.uk/docs/pytut/tut_26.html we read:
"The execu
Default parameter values are evaluated once when the function definition is
executed.
Where are they stored? (A guess: in a dictionary local to the function.)
Where is this documented?
As a Python newbie I found this behavior quite surprising.
Is it common in many other languages?
Is it unsurpris
I'm looking for the Python equivalent of the perl script and module
described at
http://comments.gmane.org/gmane.mail.imap.uw.c-client/707
Any hope?
Thanks,
Alan Isaac
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