EPD 2.5.2001 for OS X released!
I'm pleased to announce that Enthought has released the Enthought Python Distribution (EPD) 2.5.2001 for OS X! EPD is a Distribution of the Python Programming Language (currently version 2.5.2) that includes over 60 additional libraries, including ETS 2.7.1. Please visit the EPD website (http://www.enthought.com/epd) to get the OS X release, or just to find out more information about EPD 2.5.2001 So what’s the big deal? In addition to making everyones’ life easier with installation, EPD also represents a common suite of functionality deployed across platforms such as Windows XP, RedHat Linux, and now OS X 10.4 and above. The cross-platform promise of Python is better realized because it’s trivial for everyone to get substantially the same set of libraries installed on their system with a single-click install. What’s the catch? You knew it was coming, huh? If you’d like to use EPD in a Commercial or Governmental entity, we do ask you to pay for an annual subscription to download and update EPD. For academics and non-profit, private-sector organizations, EPD is and will remain free. Let’s be clear, though. EPD is the bundle of software. People pay for the subscription to download the bundle. The included libraries are, of course, freely available separately under the terms of license for each individual package (this should sound familiar). The terms for the bundle subscription are available at http://www.enthought.com/products/epdlicense.php. BTW, anyone can try it out for free for 30 days. If you have questions, check out the FAQ at http://www.enthought.com/products/epdfaq.php or drop us a line at [EMAIL PROTECTED] And just one more note: Enthought is deeply grateful to all those who have contributed to these libraries over the years. We’ve built a business around the things they allow us to do and we appreciate such a nice set of tools and the privilege of being part of the community that created them. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
RE: very newbie question
Try this: # The player tries to guess it and the computer lets # the player know if the guess is too high, too low # or right on the money import random print \tWelcome to 'Guess My Number'! print \nI'm thinking of a number between 1 and 100. print Try to guess it in as few attempts as possible.\n # set the initial values the_number = random.randrange(100) + 1 tries = 0 def ask_number(): guess = int(raw_input(Take a guess: )) tries = 1 while (guess != the_number): if (guess the_number): print Lower... else: print Higher... tries += 1 guess = int(raw_input(Take a guess: )) tries += 1 ask_number() print You guessed it! The number was, the_number print And it only took you, tries, tries!\n raw_input(\n\nPress the enter key to exit.) The variables the_number and tries were not available outside the ask_number() module. Alternatively drop the def function and lump it all into a simple script. -- *Peter Anderson* There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things—Niccolo Machiavelli, /The Prince/, ch. 6 -- http://mail.python.org/mailman/listinfo/python-list
Re: how to find out if an object is a class?
Ben Finney wrote: szczepiq writes: Pardon me for most likely a dummy question but how do I find out if an object is a class? Presumably you want to know whether it's a class in order to use it for instantiating it. It is usually more Pythonic to use the object as intended, and allow the object itself to tell you (via exceptions) when it's not behaving as you expect. This also allows passing a factory function instead of a class, BTW. I recently had the reverse case that a (stupidly implemented) extension module required a callback function and I wanted to pass a function wrapped in a wrapper object. That failed, because it specifically checked for the argument being a function, not just a callable object. I had to pull quite a number of tricks to reimplement the wrapper class as a function (thank god, it's Python!). Stefan -- http://mail.python.org/mailman/listinfo/python-list
Threading and wx.....
Hi, Im trying my hand at threading with wx applications. I have written the following code... import wx from threading import Thread, Lock class createWindow(Thread): def __init__(self): Thread.__init__(self) self.lock = Lock() self.app=None def run(self): #self.lock.acquire() self.app = wx.PySimpleApp() frame = wx.Frame(None, title=Hello wx) frame.Show() #self.lock.release() self.app.MainLoop() if __name__=='__main__': c = createWindow() c.start() c.join() Now when i run this program i get a window but the application just does not respond. Is there something that im missing here. Pls let me know. Thanks in advance. -- http://mail.python.org/mailman/listinfo/python-list
Re: Best practise implementation for equal by value objects
On 7 Aug., 21:25, Paul Rubin http://[EMAIL PROTECTED] wrote: Terry Reedy [EMAIL PROTECTED] writes: So when the initializers for instances are all 'nice' (as for range), go for it (as in 'Age(10)'). And test it as you are by eval'ing the rep. Just accept that the eval will only work in contexts with the class name bound to the class. For built-in like range, it always is, by default -- unless masked by another assignment! Eval is extremely dangerous. Think of data from untrusted sources, then ask yourself how well you really know where ALL your data came from. It's preferable to avoid using it that way. There have been a few safe eval recipes posted here and at ASPN. It would be good if one of them made it into the standard library. Note that pickle (which would otherwise be an obious choice for this) has the same problems, though not as severely as flat-out evalling something. Thank you for pointing out the dangers of eval. I think you are right to caution about it. In my particular case it is a closed-loop system, so no danger there, but that certainly could have been an issue. That caution should perhaps be mentioned in http://docs.python.org/lib/built-in-funcs.html -- http://mail.python.org/mailman/listinfo/python-list
Re: benchmark
On Aug 8, 2:49 pm, Dhananjay [EMAIL PROTECTED] wrote: Is it that a question of time and effort, or is there something that doesn't make it appropriate to python ? I don't think I've ever seen anyone who has raised concerns about the speed of python actually offer to contribute to resolving it, so I'm guessing it's the former. -- http://mail.python.org/mailman/listinfo/python-list
Re: Books to begin learning Python
On 7 Aug, 21:10, Mike Driscoll [EMAIL PROTECTED] wrote: On Aug 7, 1:12 pm, Beliavsky [EMAIL PROTECTED] wrote: On Aug 6, 4:08 pm, Mike Driscoll [EMAIL PROTECTED] wrote: On Aug 6, 2:56 pm, Edward Cormier [EMAIL PROTECTED] wrote: Which computer books are the best to begin learning Python 2.5 with? I've heard that Learning Python 3rd Edition is a good choice - can anyone give any more advice on this? Thanks. There's lots of good books to read, including a few online ones. A lot of people like Dive Into Python (http://diveintopython.org/). If you want LOTS of information and some good code examples, Lutz's Programming Python 3rd Ed is great. I have the 2nd edition. Has the 3rd edition been rewritten so that all of its code will be valid in Python 3? I'd prefer not to buy Python books that will become obsolete. As Wojtek already pointed out, Lutz's 3rd edition is written with 2.x in mind. I think it's 2.4 or 2.5, but I forget exactly which. Still, most programming books are obsolete almost from the day their printed. I'm not aware of any Python 3.0 books... I'm writing a Python 3 book that will be published as soon as possible after Python 3.0 final is released (so hopefully November). It assumes programming experience in _some_ language (not necessarily Python 2). Programming in Python 3: A Complete Introduction to the Python Language ISBN 0137129297 The table of contents and a link to some (out of date) sample text is here: http://www.qtrac.eu/py3book.html -- http://mail.python.org/mailman/listinfo/python-list
Re: .cpp to .pyd
On 7 Aug., 21:43, Carl Banks [EMAIL PROTECTED] wrote: On Aug 7, 3:25 am, [EMAIL PROTECTED] wrote: Hello, I want to build my C++ (.cpp) script to (.pyd) like this: http://en.wikibooks.org/wiki/Python_Programming/Extending_with_C%2B%2B I have installed Microsoft Visual studio .NET 2003 and Boost Python and then after I run my setup script: python setup.py build I get this error: running build running build_ext building 'hello' extension D:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c / nologo /Ox /MD /W3 /GX /DNDEBUG -IC:\Panda3D-1.5.2\python\include -IC: \Panda3D-1.5.2\pytho n\PC /Tphellomodule.cpp /Fobuild\temp.win32-2.5\Release \hellomodule.obj hellomodule.cpp hellomodule.cpp(9) : fatal error C1083: Cannot open include file: 'boost/python/ module.hpp': No such file or directory error: command 'D:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.e xe' failed with exit status 2 I think that my MS visual studio cannot find boost python, if that's the problem then can you tell me how can I solve it. This is very begginer question,but I can't find answer nowhere, and I don't have any expirience with Microsoft products. Sorry for my bad english! Regards, Veki First, locate the boost header files. Suppose you find the file module.hpp in this location: C:\boost-whatever-version\include\boost\python\module.hpp The part that comes before boost\python\module.hpp is the required include directory. You can tell setup to use this directory by adding the following argument to the Extension call: include_dirs = ['C:\\boost-whatever-version\\include'] Notice the doubling of backslashes. Remember to add the directory where the boost header files lie on your system; don't add this line exactly. You should end up with a setup call that looks like this: setup(name=blah, ext_modules=[ Extension(hello, [hellomodule.cpp], libraries = [boost_python], include_dirs = ['C:\\boost-whatever-version\\include']) ]) Carl Banks One can omit double backslashes when prefixing by 'r' or 'R': r'C:\boost-whatever-version\include' Python is just too kind. -- http://mail.python.org/mailman/listinfo/python-list
Re: Threading and wx.....
On Aug 8, 12:01 pm, SamG [EMAIL PROTECTED] wrote: Hi, Im trying my hand at threading with wx applications. I have written the following code... import wx from threading import Thread, Lock class createWindow(Thread): def __init__(self): Thread.__init__(self) self.lock = Lock() self.app=None def run(self): #self.lock.acquire() self.app = wx.PySimpleApp() frame = wx.Frame(None, title=Hello wx) frame.Show() #self.lock.release() self.app.MainLoop() if __name__=='__main__': c = createWindow() c.start() c.join() Now when i run this program i get a window but the application just does not respond. Is there something that im missing here. Pls let me know. Thanks in advance. Oops! Murphy's law works again! And the above code is working fine. -- http://mail.python.org/mailman/listinfo/python-list
Re: benchmark
On Aug 8, 9:08 am, alex23 [EMAIL PROTECTED] wrote: On Aug 8, 2:49 pm, Dhananjay [EMAIL PROTECTED] wrote: Is it that a question of time and effort, or is there something that doesn't make it appropriate to python ? I don't think I've ever seen anyone who has raised concerns about the speed of python actually offer to contribute to resolving it, so I'm guessing it's the former. Contribute to resolve it? Part of me just wants to say that to speed up python would be such a huge undertaking, the outcome would alter the language beyond what people liked. Another part thinks, why speed it up, it is pretty fast presently, and I've rarely seen real-world applications that need that 80/20 rule applied heavily. Benchmarks for showing what languages are good at is fine, but in general most conform to a standard range of speed. I cannot find the article but there was a good piece about how it takes most programmers the same time to program in any language. Reading through the code is another matter, I think Python is faster than most in that respect. I'd look to increase the worst-case scenario's of Python before trying to speed up everything. Hell the tim_sort is pretty damn fast. -- http://mail.python.org/mailman/listinfo/python-list
Re: Best practise implementation for equal by value objects
On 7 Aug., 21:19, Terry Reedy [EMAIL PROTECTED] wrote: Slaunger wrote: On 6 Aug., 21:36, Terry Reedy [EMAIL PROTECTED] wrote: OK, the situation is more complicated than that then. In the case here though, the attributes would always be sinmple bulit-in types, where eval(repr(x))==x or, where the attribute is a user-defined equal-by-value class, that I have control over. I think most would agree that a more accurate and informative representation is better than a general representation like Pythons default. For instance, a=range(2,10,2) # 3.0 a range(2, 10, 2) is nicer than class 'range' object at ##. So when the initializers for instances are all 'nice' (as for range), go for it (as in 'Age(10)'). And test it as you are by eval'ing the rep. Just accept that the eval will only work in contexts with the class name bound to the class. For built-in like range, it always is, by default -- unless masked by another assignment! OK, i am encouraged to carry on my quest with the eval(repr)) for my 'nice' classes. I just revisited the documentation for eval and noticed that there are optional globals and locals name space variables, that one could specify: http://docs.python.org/lib/built-in-funcs.html Quite frankly I do not understand how to make use of these parameters, but it is my feeling that if I enforce a convention of always specifying the globals/locals parameter in a specific manner: assert eval(repr(x), globals, locals) == x would work independent of how I have imported the module under test. Now, I just need to figure out if this is right and how to specify the globals and locals if that is not too cumbersome... or maybe I am just over-engineering... -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggestions for creating a PDF table
Kirk Strauser wrote:
Short question:
Is there a good library for generating HTML-style tables with the equivalent
of colspans, automatically sized columns, etc. that can render directly to
PDF?
Longer question:
I'm re-doing a big chunk of locally-written code. I have a
report-generating function that takes a list of lists of lists as input and
returns either a PDF, an HTML table, or an Excel spreadsheet as requested.
For example, input might look like:
makereport('html',
headers=['Invoice number', 'Customer', 'Price'],
data=[
[['123', 'John Doe', '$50.00'],
['Ordered on 2008-01-01 via the website']],
[['124', 'Peter Bilt', '$25.99'],
['Mail via African swallow']]
])
snip
Now, I have a similar transformation to PDF via pdflatex. This works fairly
well but requires a bunch of temp files and subprocesses, and I've never
been 100% happy with the LaTeX output (you have to calculate your own
column widths, for instance). Since I plan to re-write this anyway, I'd
like to find a more widely used library if one was available.
snip
Short answer: LaTeX should be good. Use XML source; XSLT to TeXML; TeXML
to LaTeX ( uses a python program); compile to PDF.
Longer answer: Can you provide a minimal example of the kind of
LaTeX source you would ideally like ?
If not, your problem is with LaTeX itself, which has if anything
__too_many__ ways of controlling tables rather than inadequate
ways. If so, we may be able to help with the rather arcane
transformation into TeXML format.
As for all the temp files that LaTeX creates, they are easily dealt
with using a makefile or whatever.
Bye for now,
Ken
--
http://mail.python.org/mailman/listinfo/python-list
Re: kill thread
2008/8/8 Miki [EMAIL PROTECTED]: Hello, I have a threading.Thread class with a for i in range(1,50) loop within. When it runs and I do ^C, I have the error [1] as many as loops. I would like to catch this exception (and if possible do some cleanup like in C pthreads) so the program finishes cleanly. Where and how can I do this ? in __run__ ? __init__ ? a try/except stuff ? You can have a try/except KeyboardException around the thread code. HTH, -- Miki Of course, but I don't know where. I placed this inside loop, within called functions from the loop, I still have the problem. Mathieu -- http://mail.python.org/mailman/listinfo/python-list
Re: random numbers according to user defined distribution ??
sturlamolden wrote: Alex wrote: I wonder if it is possible in python to produce random numbers according to a user defined distribution? Unfortunately the random module does not contain the distribution I need :-( There exist some very general algorithms to generate random numbers from arbitrary distributions. The most notable of these are Markov Chain Monte Carlo, e.g. the Metropolis-Hastings algorithm. It is very easy to implement in any programming language. The nature MCMC algorithms makes it inefficient when implemented in pure Python. But you can get tremendous speedup by simulating multiple Markov chains in parallel, by means of vectorizing with NumPy. A relative of Metropolis-Hastings which may also be applicable to your problem is pure rejection sampling. It is far less efficient, but produces no autocorrelation in the samples. I don't know. I think the certainty that rejection sampling actually gives you the desired distribution as opposed to MH's uncertainty is very much a worthwhile tradeoff for univariate distributions. Sure, you throw away fewer samples, but you know that MH isn't throwing away samples that it ought to. Personally, I view MH as a last resort when the dimensionality gets too large to do anything else. But then, that's just my opinion. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: how to find out if an object is a class?
On Fri, Aug 8, 2008 at 2:31 AM, Stefan Behnel wrote: I recently had the reverse case that a (stupidly implemented) extension module required a callback function and I wanted to pass a function wrapped in a wrapper object. That failed, because it specifically checked for the argument being a function, not just a callable object. I had to pull quite a number of tricks to reimplement the wrapper class as a function (thank god, it's Python!). You really only needed one trick: def functionize(callable): return lambda *args, **kwargs: callable(*args, **kwargs) :) -Miles -- http://mail.python.org/mailman/listinfo/python-list
CAB files
I would appreciate python code for creating *.cab files. --V. Stokes -- http://mail.python.org/mailman/listinfo/python-list
Re: Fastest way to store ints and floats on disk
Hmm... I wrote an browser based analysis tool and used the working name pyvot... Is this for the public domain? I found Numeric to provide the best balance of memory footprint and speed. I also segregated data prep into a separate process to avoid excessive memory use at run time. Turns out python Do you mean numpy? (Numeric is not actively supported, numarray is deprecated.) For the site I'm at, I've got 10 years sales history recapped from 4327846 detail records into 458197 item by customer by month records and top shows a 240Mb memory footprint. I've got 21 cross indexed selection fields, and can display up to six data types (qty, price, sqft, cost, gp%, avg). At another site I've got approx 8.5M records recapped into 1M records with 15 indexes and 5 years monthly history living in a 540Mb memory footprint. It's reasonably quick: a query like 'select san mateo, foster city and san carlos accounts, sort by customer and product category and display this year's sales by month' selects 260 records and renders in the browser in about 2 seconds. Or on the larger installation 'Show sales for the past five years for product group 12 sorted by city within route' selects 160 records and renders in about 3 seconds. Incredible. :-) My objective was to keep the info in memory for fast response times. Permature optimalization is the root of all evil. (Who said that?) All right, first I'll try to keep it in memory and come back if that doesn't work out. I played a lot of games getting this all to work well, including some c extensions, but Numeric's take, sum, tostring and fromstring ended up with 'pivotal' roles. :) Thank you, Laszlo -- http://mail.python.org/mailman/listinfo/python-list
Re: Large production environments using ZODB/ZOE?
Phillip B Oldham a écrit : I've been reading a lot recently on ZODB/ZOE, but I've not seen any reference to its use in large-scale production envrironments. Are there any real-world examples of ZODB/ZOE in use for a large system? By large, I'm thinking in terms of both horizontally-scaled systems and in terms of data storage size. You'll probably get more (and possibly better) answers on the Zope mailing list. Now FWIW, using ZEO is almost mandatory for any non-trivial Zope instance (think of mammoths like Plone etc...). -- http://mail.python.org/mailman/listinfo/python-list
Re: Fastest way to store ints and floats on disk
Laszlo Nagy [EMAIL PROTECTED] writes: Permature optimalization is the root of all evil. (Who said that?) Knuth I think. But note the premature bit - around here people sometimes give the impression that it goes optimisation is the root of all evil. -- http://mail.python.org/mailman/listinfo/python-list
Re: Create 2D character matrix
On Thu, Aug 7, 2008 at 1:36 PM, Simon Parker [EMAIL PROTECTED] wrote: Hello. I want to be able to create a 2D character matrix, ThisMatrix, like : a A b B c C d D and to be able to pick out elements, or rows or columns. I have become used to programming in R where I can easily refer to a row as : ThisMatrix [1,] and a column as ThisMatrix[,1]. etc.. Can this be done easily in Python ? You can use numpy: http://www.scipy.org/NumPy for example: In [139]: arr = numpy.char.array(['a', 'A', 'b', 'B', 'c', 'C']) In [140]: arr = arr.reshape((3,2)) In [141]: arr Out[141]: chararray([['a', 'A'], ['b', 'B'], ['c', 'C']], dtype='|S1') In [142]: arr[0,:] Out[142]: chararray(['a', 'A'], dtype='|S1') In [143]: arr[:,0] Out[143]: chararray(['a', 'b', 'c'], dtype='|S1') More documentation here: http://mentat.za.net/numpy/refguide/ or take a look at these pages for some quick examples of what's possible: http://pages.physics.cornell.edu/~myers/teaching/ComputationalMethods/python/arrays.html http://www.scipy.org/Numpy_Example_List_With_Doc -- http://mail.python.org/mailman/listinfo/python-list
Re: Best practise implementation for equal by value objects
On Fri, 08 Aug 2008 00:28:02 -0700, Slaunger wrote: OK, i am encouraged to carry on my quest with the eval(repr)) for my 'nice' classes. I just revisited the documentation for eval and noticed that there are optional globals and locals name space variables, that one could specify: http://docs.python.org/lib/built-in-funcs.html Quite frankly I do not understand how to make use of these parameters, but it is my feeling that if I enforce a convention of always specifying the globals/locals parameter in a specific manner: assert eval(repr(x), globals, locals) == x would work independent of how I have imported the module under test. Now, I just need to figure out if this is right and how to specify the globals and locals if that is not too cumbersome... or maybe I am just over-engineering... I think it is infeasible for the repr() of an object to know where it was imported from. Including the globals and locals in the call to eval() won't help you, because they can have changed between the time you created the instance and the time you call repr(). Consider: import datetime x = datetime.time(20, 21, 22) x datetime.time(20, 21, 22) eval(repr(x)) == x True So far so good! But now watch this, starting in a fresh session: import datetime as timedate t = timedate.time timedate.tttime = timedate.time del timedate.time assert t is timedate.tttime x1 = t(20, 21, 22) x2 = timedate.tttime(20, 21, 22) assert x1 == x2 What should repr(x1) and repr(x2) be, for your invariant eval(repr(x))==x to hold? It gets better (or worse): alist = [None, t, None] del t, timedate x3 = alist[1](20, 21, 22) assert x1 == x2 == x3 What should the repr() of x1, x2, x3 be now? Bringing this back to the unittests... as I see it, there's an easy way to solve your problem. In the unittest, just do something like the following: # repr(x) looks like module.class(arg), # but we actually import it as package.module.submodule.class module = package.module.submodule assert eval(repr(x)) == x I think that is all you need to do. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: kill thread
On 8 Ago, 10:03, Mathieu Prevot [EMAIL PROTECTED] wrote: 2008/8/8 Miki [EMAIL PROTECTED]: Hello, I have a threading.Thread class with a for i in range(1,50) loop within. When it runs and I do ^C, I have the error [1] as many as loops. I would like to catch this exception (and if possible do some cleanup like in C pthreads) so the program finishes cleanly. Where and how can I do this ? in __run__ ? __init__ ? a try/except stuff ? You can have a try/except KeyboardException around the thread code. HTH, -- Miki Of course, but I don't know where. I placed this inside loop, within called functions from the loop, I still have the problem. Mathieu Try this: loop_completed = True for i in range(1,50): try: # your code here except KeyboardException: loop_completed = False break # this breaks the loop # end loop if loop_completed: # code to be executed in case of normal completion else: # code to be executed in case of interruption # code to be executed in both cases -- http://mail.python.org/mailman/listinfo/python-list
regular expressions.
Hey All, I have been playing around with REs and could not get the following code to run. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) anything wrong I have done? Regards, Atul. -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. wrote: I have been playing around with REs and could not get the following code to run. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) anything wrong I have done? Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter -- http://mail.python.org/mailman/listinfo/python-list
numpy and filtering (was: Fastest way to store ints and floats on disk)
Attached there is an example program that only requires numpy. At the
end I have two numpy array:
rdims:
[[3 1 1]
[0 0 4]
[1 3 0]
[2 2 0]
[3 3 3]
[0 0 2]]
rmeas:
[[10.0 254.0]
[4.0 200.0]
[5.0 185.0]
[5000.0 160.0]
[15.0 260.0]
[2.0 180.0]]
I would like to use numpy to create statistic, for example the mean
value of the prices:
rmeas[:,0] # Prices of cars
array([10.0, 4.0, 5.0, 5000.0, 15.0, 2.0],
dtype=float96)
rmeas[:,0].mean() # Mean price
60833.3321
However, I only want to do this for 'color=yellow' or 'year=2003,
make=Ford' etc. I wonder if there a built-in numpy method that can
filter out rows using a set of values. E.g. create a view of the
original array or a new array that contains only the filtered rows. I
know how to do it from Python with iterators, but I wonder if there is a
better way to do it in numpy. (I'm new to numpy please forgive me if
this is a dumb question.)
Thanks,
Laszlo
import numpy
columns = ['Color','Year','Make','Price','VMax']
dimension_columns = [0,1,2]
measure_columns = [3,4]
data = [
['Yellow', '2000', 'Ferrari', 10.,254.],
['Blue', '2003', 'Volvo',4.,200.],
['Black', '2005', 'Ford', 5.,185.],
['Red','1990', 'Ford', 5000.,160.],
['Yellow', '2005', 'Lamborgini', 15.,260.],
['Blue', '2003', 'Suzuki', 2.,180.],
]
print Original data
print ---
for row in data:
print row
# Create dimension values list
dimensions = []
for colindex in dimension_columns:
dimensions.append({
'name':columns[colindex],
'colindex':colindex,
'values': list(set( map( lambda row: row[colindex], data ) )),
})
print Dimensions
print ---
for d in dimensions:
print d
# Create a numpy array from dimensions
nrows = len(data)
ncols = len(dimension_columns)
rdims = numpy.empty( (nrows,ncols), dtype=numpy.uint32 )
for rindex,row in enumerate(data):
for dindex,cindex in enumerate(dimension_columns):
dimension = dimensions[dindex]
rdims[rindex,cindex] = dimension['values'].index(row[cindex])
print Dimension value indexes
print ---
print rdims
# Create numpy array from values
nrows = len(data)
ncols = len(measure_columns)
rmeas = numpy.empty( (nrows,ncols), dtype=numpy.float96 )
for rindex,row in enumerate(data):
for mindex,cindex in enumerate(measure_columns):
rmeas[rindex,mindex] = row[cindex]
print Measure values
print ---
print rmeas
--
http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Use the print statement: import re vowel = r'[aeiou]' print re.findall(vowel, rvowel) Alexey On Fri, Aug 8, 2008 at 2:17 PM, Atul. [EMAIL PROTECTED] wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. What's the name of your script? What happens when you run it? Does it print a traceback? If so, what does it say? Please cut and paste, don't paraphrase. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
On Aug 8, 4:22 pm, Peter Otten [EMAIL PROTECTED] wrote: Atul. wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. What's the name of your script? What happens when you run it? Does it print a traceback? If so, what does it say? Please cut and paste, don't paraphrase. Peter This is something get when I run it like below. it does not print any output. [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [EMAIL PROTECTED]:~/Work/work/programs$ -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
On Aug 8, 4:33 pm, Atul. [EMAIL PROTECTED] wrote: On Aug 8, 4:22 pm, Peter Otten [EMAIL PROTECTED] wrote: Atul. wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. What's the name of your script? What happens when you run it? Does it print a traceback? If so, what does it say? Please cut and paste, don't paraphrase. Peter This is something get when I run it like below. it does not print any output. [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [EMAIL PROTECTED]:~/Work/work/programs$ ok I get it thats coz, I dont print it. right? when I print it does she it. -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. schrieb: On Aug 8, 4:33 pm, Atul. [EMAIL PROTECTED] wrote: On Aug 8, 4:22 pm, Peter Otten [EMAIL PROTECTED] wrote: Atul. wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. What's the name of your script? What happens when you run it? Does it print a traceback? If so, what does it say? Please cut and paste, don't paraphrase. Peter This is something get when I run it like below. it does not print any output. [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [EMAIL PROTECTED]:~/Work/work/programs$ ok I get it thats coz, I dont print it. right? when I print it does she it. Yes. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. wrote: On Aug 8, 4:33 pm, Atul. [EMAIL PROTECTED] wrote: On Aug 8, 4:22 pm, Peter Otten [EMAIL PROTECTED] wrote: Atul. wrote: Yes. You didn't paste the traceback into your message. import re vowel = r'[aeiou]' re.findall(vowel, rvowel) ['o', 'e'] It works as expected here. Peter When I key this input in IDLE it works but when I try to run the module it wont work. What's the name of your script? What happens when you run it? Does it print a traceback? If so, what does it say? Please cut and paste, don't paraphrase. Peter This is something get when I run it like below. it does not print any output. [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [EMAIL PROTECTED]:~/Work/work/programs$ ok I get it thats coz, I dont print it. right? when I print it does she it. Heureka! -- http://mail.python.org/mailman/listinfo/python-list
Re: Books to begin learning Python
Hi Edward, I like Dive into Python because it's been written for people who know programming with other languages. This could be an advantage or a disadvantage, if you feel really uncomfortable reading Python code (if you can't imagine absolutly nothing about what it does), my advice is to choose another book. Otherwise, Dive in to Python is a fantastic choice. I'll take this opportunity to introduce myself, because this is my first post. Best regards to everybody from a spanish Python novice and enthusiast :-) Jaime -- http://mail.python.org/mailman/listinfo/python-list
Re: Limits of Metaprogramming
On Aug 4, 5:13 pm, Tomasz Rola [EMAIL PROTECTED] wrote: On Mon, 4 Aug 2008, Wilson wrote: Every sufficiently large application has a poor/incomplete implementation ofLISPembedded within it . Yep, this is either exact or very close copy of what I have read. It's Greenspun's Tenth Rule of Programming: Any sufficiently complicated C or Fortran program contains an ad-hoc, informally-specified bug-ridden slow implementation of half of Common Lisp. Iain -- http://mail.python.org/mailman/listinfo/python-list
Re: python-mode is missing the class browser
On Aug 7, 5:55 pm, Alexander Schmolck [EMAIL PROTECTED] wrote: There are two different and independently developedpython-modes. The politically correct one that comes with emacs (IIRC python.el) that had pretty limited functionality last time I looked, and the original but not FSF blessed python-mode.el (http://sourceforge.net/projects/python-mode/), which should come with install instructions. If you use ipython you might additionally want to install ipython.el, which comes with the ipython tar ball. I have solved by using ipython.el which was already installed. For the sake of future googlers using Ubuntu 8.04, emacs and ipython, it is enough if you just add (setq ipython-command /usr/bin/ipython) (require 'ipython) to your .emacs. It is nice since I get the occasion to try ipython.el which I am sure I will like ;) M. Simionato -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
The same file when I use with the following does not work. import re vowel = r'[u\u093eu\u093fu\u0940u\u0941u\u0942u\u0943u\u0944u\u0945u\u0946u\u0947u\u0948u\u0949u\u094au\u094bu\u094c]' print re.findall(vowel, u\u092f\u093e\u0902\u091a\u094d\u092f\u093e, re.UNICODE) [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [] [EMAIL PROTECTED]:~/Work/work/programs$ is this the way to use Unicode in REs? Regards, Atul. -- http://mail.python.org/mailman/listinfo/python-list
Re: random numbers according to user defined distribution ??
Alex wrote: I wonder if it is possible in python to produce random numbers according to a user defined distribution? Unfortunately the random module does not contain the distribution I need :-( Have you looked at the numpy random number module? It seems to have quite a lot of distributions. See help(numpy.random). Jeremy -- Jeremy Sanders http://www.jeremysanders.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: python-mode is missing the class browser
On Fri, Aug 8, 2008 at 7:32 AM, Michele Simionato [EMAIL PROTECTED] wrote: On Aug 7, 5:55 pm, Alexander Schmolck [EMAIL PROTECTED] wrote: ... I have solved by using ipython.el which was already installed. For the sake of future googlers using Ubuntu 8.04, emacs and ipython, it is enough if you just add (setq ipython-command /usr/bin/ipython) (require 'ipython) to your .emacs. It is nice since I get the occasion to try ipython.el which I am sure I will like ;) So, I'm looking at the .el, but I'm not sure. What else does ipython.el give you than just the ipython shell? M. Simionato -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. wrote: The same file when I use with the following does not work. import re vowel = r'[u\u093eu\u093fu\u0940u\u0941u\u0942u\u0943u\u0944u\u0945u\u0946u\u0947u\u0948u\u0949u\u094au\u094bu\u094c]' print re.findall(vowel, u\u092f\u093e\u0902\u091a\u094d\u092f\u093e, re.UNICODE) [EMAIL PROTECTED]:~/Work/work/programs$ python fourth.py [] [EMAIL PROTECTED]:~/Work/work/programs$ is this the way to use Unicode in REs? No, u... is part of the string, not the character. The regex becomes # untested vowel = u'[\u093e\u093f\u0940\u0941\u0942\u0943\u0944\u0945\u0946\u0947\u0948\u0949\u094a\u094b\u094c]' Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: how to find out if an object is a class?
szczepiq wrote: Pardon me for most likely a dummy question but how do I find out if an object is a class? For God's sake don't reinvent the wheel! The 'inspect' module (part of the Python standard library) has a functions isclass(). It does the proper tests for new style and old style classes. import inspect inspect.isclass(something) Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expressions.
Atul. [EMAIL PROTECTED] writes: the following does not work. import re vowel = r'[u\u093eu\u093fu\u0940u\u0941u\u0942u\u0943u\u0944u\u0945u\u0946u\u0947u\u0948u\u0949u\u094au\u094bu\u094c]' Unfortunately you cannot embed arbitrary Python string constants (u...) in regular expressions. What does work is something like: vowel = u'[\u093e\u093f\u0940\u0941\u0942\u0943\u0944\u0945\u0946\u0947\u0948\u0949\u094a\u094b\u094c]' re.findall(vowel, u\u092f\u093e\u0902\u091a\u094d\u092f\u093e) [u'\u093e', u'\u093e'] -- http://mail.python.org/mailman/listinfo/python-list
Re: Threading and wx.....
On Aug 8, 2:19 am, SamG [EMAIL PROTECTED] wrote: On Aug 8, 12:01 pm, SamG [EMAIL PROTECTED] wrote: Hi, Im trying my hand at threading with wx applications. I have written the following code... import wx from threading import Thread, Lock class createWindow(Thread): def __init__(self): Thread.__init__(self) self.lock = Lock() self.app=None def run(self): #self.lock.acquire() self.app = wx.PySimpleApp() frame = wx.Frame(None, title=Hello wx) frame.Show() #self.lock.release() self.app.MainLoop() if __name__=='__main__': c = createWindow() c.start() c.join() Now when i run this program i get a window but the application just does not respond. Is there something that im missing here. Pls let me know. Thanks in advance. Oops! Murphy's law works again! And the above code is working fine. You'll probably also find the following wiki article helpful: http://wiki.wxpython.org/LongRunningTasks And there's at least one demo in the wxPython Demo that's a good example of threading. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: CAB files
Virgil Stokes wrote: I would appreciate python code for creating *.cab files. I'm not aware of any existing modules for creating CABs. I thought there were some MS API calls for doing that kind of thing but a quick search hasn't shown anything up. You may have to roll your own: http://support.microsoft.com/kb/310618 TJG -- http://mail.python.org/mailman/listinfo/python-list
bbfreeze problem
Any ideas on this?
bb-freeze test5-coded-pre.py
WARNING: found xml.sax in multiple directories. Assuming it's a namespace
package. (found in /usr/lib64/python2.5/site-packages/_xmlplus/sax,
/usr/lib64/python2.5/xml/sax)
*** applied function recipe_doctest at 0xc618c0
recipe_matplotlib: using the backend_qt4agg matplotlib backend
*** applied function recipe_matplotlib at 0xc61d70
*** applied function recipe_pydoc at 0xc619b0
*** applied function recipe_time at 0xc61c80
*** applied function recipe_urllib at 0xc61a28
SKIPPING: SharedLibrary('libgthread-2.0.so.0',)
SKIPPING: SharedLibrary('libglib-2.0.so.0',)
*** applied function recipe_gtk_and_friends at 0xc61e60
*** applied function recipe_tkinter at 0xc61de8
==
The following eggs are being used:
Numeric 24.2 (/usr/lib64/python2.5/site-packages/Numeric)
configobj 4.5.2 (/usr/lib/python2.5/site-packages/configobj-4.5.2-py2.5.egg)
matplotlib 0.91.2 (/usr/lib/python2.5/site-packages/matplotlib-0.91.2-py2.5-
linux-x86_64.egg)
setuptools 0.6c8 (/usr/lib/python2.5/site-packages/setuptools-0.6c8-py2.5.egg)
==
/usr/lib64/python2.5/site-packages/Numeric looks like a development egg. need
to run setup.py bdist_egg
Traceback (most recent call last):
File /usr/bin/bb-freeze, line 8, in module
load_entry_point('bbfreeze==0.96.2', 'console_scripts', 'bb-freeze')()
File /usr/lib/python2.5/site-packages/bbfreeze-0.96.2-py2.5-linux-
x86_64.egg/bbfreeze/__init__.py, line 18, in main
f()
File /usr/lib/python2.5/site-packages/bbfreeze-0.96.2-py2.5-linux-
x86_64.egg/bbfreeze/freezer.py, line 516, in __call__
analyzer.copy(self.distdir)
File /usr/lib/python2.5/site-packages/bbfreeze-0.96.2-py2.5-linux-
x86_64.egg/bbfreeze/freezer.py, line 138, in copy
eggutil.copyDistribution(x, destdir)
File /usr/lib/python2.5/site-packages/bbfreeze-0.96.2-py2.5-linux-
x86_64.egg/bbfreeze/eggutil.py, line 132, in copyDistribution
raise RuntimeError(setup.py not found for development egg)
RuntimeError: setup.py not found for development egg
I don't think I'm using matplotlib, don't understand what dragged it in (python
-v on my script does _not_ show any matplotlib)
--
http://mail.python.org/mailman/listinfo/python-list
Re: Limits of Metaprogramming
On 8 Aug, 13:30, Iain King [EMAIL PROTECTED] wrote: On Aug 4, 5:13 pm, Tomasz Rola [EMAIL PROTECTED] wrote: On Mon, 4 Aug 2008, Wilson wrote: Every sufficiently large application has a poor/incomplete implementation ofLISPembedded within it . Yep, this is either exact or very close copy of what I have read. It's Greenspun's Tenth Rule of Programming: Any sufficiently complicated C or Fortran program contains an ad-hoc, informally-specified bug-ridden slow implementation of half of Common Lisp. Iain Thanks for that. Makes my attempt look pathetic! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: CAB files
Virgil Stokes schrieb: I would appreciate python code for creating *.cab files. --V. Stokes Here is some code that I have still laying around. It has never been used in production and I do not know what you can do with the cab files it creates, but I have been able to create a cab and open it with winzip. Thomas cab.py from ctypes import * import sys, os, tempfile, glob BOOL = c_int ULONG = c_ulong UINT = c_uint USHORT = c_ushort class ERF(Structure): _fields_ = [(erfOper, c_int), (erfType, c_int), (fError, BOOL)] CB_MAX_CHUNK = 32768 CB_MAX_DISK =0x7ff CB_MAX_FILENAME = 256 CB_MAX_CABINET_NAME = 256 CB_MAX_CAB_PATH = 256 CB_MAX_DISK_NAME = 256 class CCAB(Structure): _fields_ = [ (cb, ULONG), # size available for cabinet on this media (cbFolderThresh, ULONG), # Thresshold for forcing a new Folder (cbReserveCFHeader, UINT), # Space to reserve in CFHEADER (cbReserveCFFolder, UINT), # Space to reserve in CFFOLDER (cbReserveCFData, UINT), # Space to reserve in CFDATA (iCab, c_int),# sequential numbers for cabinets (iDisk, c_int), # Disk number (fFailOnIncompressible, c_int), # TRUE = Fail if a block is incompressible (setID, USHORT), # Cabinet set ID (szDisk, c_char * CB_MAX_DISK_NAME),# current disk name (szCab, c_char * CB_MAX_CABINET_NAME), # current cabinet name (szCabPath, c_char * CB_MAX_CAB_PATH), # path for creating cabinet ] cab = cdll.cabinet class HFCI(object): _handle = 0 _as_parameter_ = property(lambda self: self._handle) def __init__(self, fnm, verbose=1): self.verbose = verbose self.erf = ERF() ccab = self.ccab = CCAB() ccab.cb = 1 ccab.cbFolderThresh = 10 ccab.szCab = os.path.basename(fnm) dirname = os.path.dirname(fnm) if not dirname: dirname = . ccab.szCabPath = dirname + \\ self._init_callbacks() self._handle = cab.FCICreate(byref(self.erf), self.pfn_filedest, cdll.msvcrt.malloc, cdll.msvcrt.free, cdll.msvcrt._open, cdll.msvcrt._read, cdll.msvcrt._write, cdll.msvcrt._close, cdll.msvcrt._lseek, cdll.msvcrt._unlink, self.pfn_gettempfnm, byref(ccab), None) def _init_callbacks(self): self.pfn_gettempfnm = CFUNCTYPE(c_int, c_void_p, c_int, c_void_p)(self._gettempfnm) self.pfn_filedest = CFUNCTYPE(c_int)(self._filedest) self.pfn_status = CFUNCTYPE(c_int, c_int, c_uint, c_uint, c_void_p)(self._status) self.pfn_getnextcab = CFUNCTYPE(c_int)(self._getnextcab) self.pfn_getopeninfo = CFUNCTYPE(c_int, c_char_p)(self._getopeninfo) def _getopeninfo(self, fnm): if self.verbose: print File, fnm return cdll.msvcrt._open(fnm, os.O_BINARY | os.O_RDONLY) def _status(self, typeStatus, cb1, cb2, pv): return 0 def _filedest(self): return 0 def _getnextcab(self): return 0 def _gettempfnm(self, pszTempName, cbTempName, pv): # same as tempfile.mktemp(), but this is deprecated fh, fnm = tempfile.mkstemp() os.close(fh) os.remove(fnm) cdll.msvcrt.strcpy(pszTempName, fnm) return 1 def AddFile(self, src, dst=None, compressed=0): if dst is None: dst = os.path.basename(src) cab.FCIAddFile(self, src, dst, 0, # fExecute self.pfn_getnextcab, self.pfn_status, self.pfn_getopeninfo, compressed) def Close(self): if self._handle != 0: cab.FCIFlushCabinet(self, 0, # fGetNextCab self.pfn_getnextcab, self.pfn_status) cab.FCIDestroy(self) self._handle = 0 if __name__ == __main__: import os, glob hfci = HFCI(my-first.cab, verbose=1) files = glob.glob(r.\cab\*.*) for fnm in files: hfci.AddFile(fnm) hfci.Close() eof -- http://mail.python.org/mailman/listinfo/python-list
Re: how to find out if an object is a class?
Miles wrote: On Fri, Aug 8, 2008 at 2:31 AM, Stefan Behnel wrote: I recently had the reverse case that a (stupidly implemented) extension module required a callback function and I wanted to pass a function wrapped in a wrapper object. That failed, because it specifically checked for the argument being a function, not just a callable object. I had to pull quite a number of tricks to reimplement the wrapper class as a function (thank god, it's Python!). You really only needed one trick: def functionize(callable): return lambda *args, **kwargs: callable(*args, **kwargs) Congratulations, you found the trivial case. Stefan -- http://mail.python.org/mailman/listinfo/python-list
small issue with Idle
When you press 'home' button cursor goes before prompt. This is little uncomfortable. I am using Idle 1.2.2. (python 2.5.2.) -- http://mail.python.org/mailman/listinfo/python-list
Re: python-mode is missing the class browser
Adam Jenkins [EMAIL PROTECTED] writes: On Fri, Aug 8, 2008 at 7:32 AM, Michele Simionato [EMAIL PROTECTED] wrote: On Aug 7, 5:55 pm, Alexander Schmolck [EMAIL PROTECTED] wrote: ... I have solved by using ipython.el which was already installed. For the sake of future googlers using Ubuntu 8.04, emacs and ipython, it is enough if you just add (setq ipython-command /usr/bin/ipython) (require 'ipython) to your .emacs. It is nice since I get the occasion to try ipython.el which I am sure I will like ;) So, I'm looking at the .el, but I'm not sure. What else does ipython.el give you than just the ipython shell? What else could you possibly want? :) Seriously, ipython.el is a simple kludge whose only function is to make python-mode work with ipython (rather than python[*]). Despite this certain primitiveness (c.f. slime), Emacs+ipython makes quite a powerful development environment, significantly more so than ipython alone or emacs + python. Most importantly thre is: 1. debug. Try it: write some code that will throw an unhandled exception, and just type ``debug``. Type ``u`` and ``d`` to go up and down the stack frame, and see the right file and line pop up in emacs. I really find that combined with the ability to do arbitrary things with the things I find on the stack incredibly useful for development. 2. ? and ?? as well as ed. To get help on foo you just write ``foo?``. To get its source code as well type ``foo??``. Finally to edit the code that correspond's to foo's class or function definition (also works on class instances)) type ``ed foo`` (IIIRCk the default behavior is autoexecution, so you might want to re-alias). 3. Autocompletion with tab. 4. run (including -d and -p options). Try ``run?`` 5. Matplotlib and gui stuff works interactively. (-pylab cmdline option) 6. Convenient Shell interaction (ls, !, int) and interpolation from and too python 7. Pretty printing. But there's plenty more stuff. The most useful in terms of added functionality via emacs is 1, but isearch and emacs editing power make the ipython shell output also noticably more useful (and thus things like ?, ?? and pretty printing). cheers, 'as [*] Inter alia the prompt parsing stuff needs to be different and the ansi color formatting needs to be dealt with. -- http://mail.python.org/mailman/listinfo/python-list
Re: .cpp to .pyd
On 7 kol, 21:43, Carl Banks [EMAIL PROTECTED] wrote: On Aug 7, 3:25 am, [EMAIL PROTECTED] wrote: Hello, I want to build my C++ (.cpp) script to (.pyd) like this: http://en.wikibooks.org/wiki/Python_Programming/Extending_with_C%2B%2B I have installed Microsoft Visual studio .NET 2003 and Boost Python and then after I run my setup script: python setup.py build I get this error: running build running build_ext building 'hello' extension D:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c / nologo /Ox /MD /W3 /GX /DNDEBUG -IC:\Panda3D-1.5.2\python\include -IC: \Panda3D-1.5.2\pytho n\PC /Tphellomodule.cpp /Fobuild\temp.win32-2.5\Release \hellomodule.obj hellomodule.cpp hellomodule.cpp(9) : fatal error C1083: Cannot open include file: 'boost/python/ module.hpp': No such file or directory error: command 'D:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.e xe' failed with exit status 2 I think that my MS visual studio cannot find boost python, if that's the problem then can you tell me how can I solve it. This is very begginer question,but I can't find answer nowhere, and I don't have any expirience with Microsoft products. Sorry for my bad english! Regards, Veki First, locate the boost header files. Suppose you find the file module.hpp in this location: C:\boost-whatever-version\include\boost\python\module.hpp The part that comes before boost\python\module.hpp is the required include directory. You can tell setup to use this directory by adding the following argument to the Extension call: include_dirs = ['C:\\boost-whatever-version\\include'] Notice the doubling of backslashes. Remember to add the directory where the boost header files lie on your system; don't add this line exactly. You should end up with a setup call that looks like this: setup(name=blah, ext_modules=[ Extension(hello, [hellomodule.cpp], libraries = [boost_python], include_dirs = ['C:\\boost-whatever-version\\include']) ]) Carl Banks Hi, Thanks for quick reply.Maybe I'm crazy but I did what you said and I stll get the same error :( :( :( :(.I have boost version 1.34.1 and I'm running it on Windows XP SP2. Regards, Veki -- http://mail.python.org/mailman/listinfo/python-list
Re: Psycho question
In article [EMAIL PROTECTED], Delaney, Timothy (Tim) [EMAIL PROTECTED] wrote: David C. Ullrich wrote: f: 0.0158488750458 g: 0.000610113143921 h: 0.00200295448303 f: 0.0184948444366 g: 0.000257015228271 h: 0.00116610527039 I suspect you're hitting the point of diminishing returns with g, and any further investigations into optimisation are purely for fun and learning ;) No doubt. Hadn't meant to get into optimization, at least not here, but various people made various comments - when someone suggests this or that seems like I should try it. Curiously smug grin g is exactly how I'd planned on doing it before trying anything. The one thing that puzzles me about all the results is why // is so much slower than / inside that Psyco loop. Tim Delaney -- David C. Ullrich -- http://mail.python.org/mailman/listinfo/python-list
Re: small issue with Idle
On Aug 8, 9:41 pm, v4vijayakumar [EMAIL PROTECTED] wrote: When you press 'home' button cursor goes before prompt. This is little uncomfortable. I am using Idle 1.2.2. (python 2.5.2.) This is IDLE's behavior, not really python's. Anyway, I don't really mind the minor annoyance as you don't seriously program serious program in interactive mode (no pun intended). Anyway, if you feel really disturbed by this, you should file a bug in: http://bugs.python.org/ -- http://mail.python.org/mailman/listinfo/python-list
relative imports improve program organization... suggestions?
Alright, I have searched and searched and read many conversations on the topic of relative and absolute imports and am still not getting the whole thing through my skull. Highlights of what I've read: http://mail.python.org/pipermail/python-list/2007-January/422973.html http://groups.google.com/group/comp.lang.python/browse_thread/thread/b1e8dc93471a7079/8751c82cfe1ca3f2?lnk=gstq=absolute+import#8751c82cfe1ca3f2 http://www.python.org/dev/peps/pep-0328/ http://docs.python.org/whatsnew/pep-328.html So my problem and argument: I want to create a package organized as the following: pckg/ __init__.py main.py moduleA/ __init__.py A_base.py A1/ __init__.py A_inherit1.py other_A1_files... A2/ __init__.py A_inherit2.py other_A2_files... moduleB/ ... Explanation: The main program is located in main.py and it implements the different modules (A, B). Within the modules the basic organization is; the base class for all different types of A is directly within the moduleA directory. All of the different inherited classes of A are within their own subdirectory with a mess of their own files. This is done so that a new subclass of A can be added/removed by just adding/ removing the subdirectory and each of these subclasses may have their own maintainer, but they should all inherit from A_base.py If I am developing the A1 directory, I want to be able to test A_inherit1.py by using 'if __name__ == __main__' within the A_inherit1.py file and by typing 'python A_inherit1.py' on the command line. I prefer this simply to keep all unit tests within the same directory and same file as the inherited class. My Problem: A_inherit1.py has the line: 'from ..A_base import A_Base_Class' so that I can later declare the inherited class as such: 'A1_Inherited_Class(A_Base_Class):' *BUT* I get the 'attempted relative import in non-package' error even when I try the 'from __future__ import absolute_import' command. I would prefer to be able to test the file without adding anything to the PYTHONPATH, like I said by using the name == main trick. So could someone explain to me what the rationale behind not allowing parent directory relative imports is? And possibly what I can do to get around it? (I really don't like messing with the sys.path for something like this) Thanks, Danny G -- http://mail.python.org/mailman/listinfo/python-list
Re: small issue with Idle
On Aug 8, 9:41 am, v4vijayakumar [EMAIL PROTECTED] wrote: When you press 'home' button cursor goes before prompt. This is little uncomfortable. I am using Idle 1.2.2. (python 2.5.2.) There's a free version of Wing IDE that has an IDLE-like interface that doesn't have this issue...or you could just use the command line version of IDLE. Mike -- http://mail.python.org/mailman/listinfo/python-list
Problem with global variables
Pythoners, I'm having trouble understanding the behavior of global variables in a code I'm writing. I have a file, test.py, with the following contents foo = [] def goo(): global foo foo = [] foo.append(2) def moo(): print foo In an ipython session, I see the following: In [1]: from test import * In [2]: foo Out[2]: [] In [3]: goo() In [4]: foo Out[4]: [] In [5]: moo() [2] I don't understand this behavior. I assumed that foo as defined in test.py is a global object, but that doesn't seem to be the case. Obviously, there's some sort of namespace thing going on here that I don't get. The ipython session seems to be dealing with one copy of foo while goo() and moo() are using an entirely different copy. If I take out the line 'foo = []' in goo(), everything behaves exactly as I expect, that is, in ipython, when I type goo() followed by foo I get [2]. Can anyone shed some light on this behavior? Cheers, A.J. -- http://mail.python.org/mailman/listinfo/python-list
Re: HTTP basic authentication with form-based authentication
On Aug 7, 3:54 pm, Wojtek Walczak [EMAIL PROTECTED] wrote: Dnia Thu, 7 Aug 2008 11:14:05 -0700 (PDT), Max napisa³(a): Use ClientCookie or even better - mechanize:http://pypi.python.org/pypi/mechanize/ The docs aren't perfect, but you should easily find what you are searching for. Thank you; mechanize is perfect. The example at http://wwwsearch.sourceforge.net/mechanize/ provided enough information for my problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: HTTP basic authentication with form-based authentication
On Aug 7, 3:54 pm, Wojtek Walczak [EMAIL PROTECTED] wrote: Dnia Thu, 7 Aug 2008 11:14:05 -0700 (PDT), Max napisa³(a): Use ClientCookie or even better - mechanize:http://pypi.python.org/pypi/mechanize/ The docs aren't perfect, but you should easily find what you are searching for. Thank you; mechanize is perfect. The example at http://wwwsearch.sourceforge.net/mechanize/ provided enough information for my problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: python-mode is missing the class browser
Alexander Schmolck wrote: Adam Jenkins [EMAIL PROTECTED] writes: On Fri, Aug 8, 2008 at 7:32 AM, Michele Simionato [EMAIL PROTECTED] wrote: On Aug 7, 5:55 pm, Alexander Schmolck [EMAIL PROTECTED] wrote: ... I have solved by using ipython.el which was already installed. For the sake of future googlers using Ubuntu 8.04, emacs and ipython, it is enough if you just add (setq ipython-command /usr/bin/ipython) (require 'ipython) to your .emacs. It is nice since I get the occasion to try ipython.el which I am sure I will like ;) So, I'm looking at the .el, but I'm not sure. What else does ipython.el give you than just the ipython shell? What else could you possibly want? :) Seriously, ipython.el is a simple kludge whose only function is to make python-mode work with ipython (rather than python[*]). Despite this certain primitiveness (c.f. slime), Emacs+ipython makes quite a powerful development environment, significantly more so than ipython alone or emacs + python. Most importantly thre is: 1. debug. Try it: write some code that will throw an unhandled exception, and just type ``debug``. Type ``u`` and ``d`` to go up and down the stack frame, and see the right file and line pop up in emacs. I really find that combined with the ability to do arbitrary things with the things I find on the stack incredibly useful for development. 2. ? and ?? as well as ed. To get help on foo you just write ``foo?``. To get its source code as well type ``foo??``. Finally to edit the code that correspond's to foo's class or function definition (also works on class instances)) type ``ed foo`` (IIIRCk the default behavior is autoexecution, so you might want to re-alias). 3. Autocompletion with tab. 4. run (including -d and -p options). Try ``run?`` 5. Matplotlib and gui stuff works interactively. (-pylab cmdline option) 6. Convenient Shell interaction (ls, !, int) and interpolation from and too python 7. Pretty printing. But there's plenty more stuff. The most useful in terms of added functionality via emacs is 1, but isearch and emacs editing power make the ipython shell output also noticably more useful (and thus things like ?, ?? and pretty printing). cheers, 'as [*] Inter alia the prompt parsing stuff needs to be different and the ansi color formatting needs to be dealt with. -- Unfortunately, ipython.el seems to be incompatible with use on your own scripts if they process command line options (e.g., optparse). -- http://mail.python.org/mailman/listinfo/python-list
Programmers needed: open governance project
The Metagovernment project is seeking Python programmers to help us build Metascore, an open source (Affero GPL) web application intended to act as the governing mechanism of any community of any size. http://www.metagovernment.org/wiki/Metascore Metascore could be used for something as simple as managing the administrative functions of a chess club to something as massive as being the legal government of a city (or larger). The primary objective is to enable everyone in a community to participate in the governance of that community, without having to rely on any individual leader/representative. In its simplest form, this system can simplify the administration of small communities, obviating the need for a cumbersome bureaucratic structure. In it's most sophisticated potential application, it can enable massively-participatory (web 2.0) global direct democracy without suffering from the traditional flaws of mob rule. We are attempting to build a mechanism where consensus can be built organically through the promotion of synthesis between conflicting points of view. We invite you to check us out and see if you could be of assistance. We are pre-Alpha, and currently have two radically different branches. One of those is being developed in Python 2.4 and Django, and the lead developer would love to have some help. See this page for a general description and a link to a code repository: http://www.metagovernment.org/wiki/PrototypeA A running copy of the code is on the developer's laptop (but will be moved to metascore.org soon), so I won't give out that link, but he would be happy to talk to / share with you. What's in it for you, other than some great programming experience? A chance to be an architect and builder of what just might be the new government of humanity. It is a long road we are following, but clearly the world is poised to mature beyond archaic, leader-follower forms of government. This is your chance to be one of the key players to make it happen. Feel free to contact me, contact the lead developer of this branch (he hangs out on #metascore on irc.freenode.net) or to join our startup committee (i.e., mailing list) detailed at: http://www.metagovernment.org/wiki/Startup Thank you for your consideration. Ed Pastore Metagovernment project http://www.metagovernment.org/wiki/User:Ed_Pastore -- http://mail.python.org/mailman/listinfo/python-list
Re: Psycho question
On Fri, 2008-08-08 at 12:18 -0500, David C. Ullrich wrote: Curiously smug grin g is exactly how I'd planned on doing it before trying anything. The one thing that puzzles me about all the results is why // is so much slower than / inside that Psyco loop. Tim Delaney One possibility for the performance difference, is that as I understand it the psyco developer has moved on to working on pypy, and probably isn't interested in keeping psyco updated and optimized for new python syntax. Somebody correct me if I'm wrong, but last I heard there's no expectation of a python 3.0 compatible version of psyco, either. -- John Krukoff [EMAIL PROTECTED] Land Title Guarantee Company -- http://mail.python.org/mailman/listinfo/python-list
I need a Python mentor
How are you? You look good; I will like to meet you. Visit my profile and drop some line for me. Abah Hello everybody, i`m new to this list. I was programming in PHP before, so just of recent I started learning python. I need someone who I can be giving me some assignment based on the chapter I read in the book, and tell person will sometime review my code and tell me if it well structured. Can you be my mentor? -- http://mail.python.org/mailman/listinfo/python-list
I need a Python mentor
*Please the first message i sent out contain error, i`m very very sorry.* Hello everybody, i`m new to this list. I was programming in PHP before, so just of recent I started learning python. I need someone who I can be giving me some assignment based on the chapter I read in the book, and tell person will sometime review my code and tell me if it well structured. Can you be my mentor? Abah Josep -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with global variables
On Fri, 08 Aug 2008 13:10:48 -0400, Anthony Kuhlman wrote: I'm having trouble understanding the behavior of global variables in a code I'm writing. I have a file, test.py, with the following contents foo = [] def goo(): global foo foo = [] foo.append(2) def moo(): print foo In an ipython session, I see the following: In [1]: from test import * In [2]: foo Out[2]: [] In [3]: goo() In [4]: foo Out[4]: [] In [5]: moo() [2] I don't understand this behavior. I assumed that foo as defined in test.py is a global object, but that doesn't seem to be the case. ``global`` means module global. There's no really global namespace in Python. The ipython session seems to be dealing with one copy of foo while goo() and moo() are using an entirely different copy. The import binds the list from the module to the name `foo` in the IPython namespace. When you call `goo()` it binds the name `foo` *within the module* to a new list. This has of course no influence on the name in the IPython namespace which is still bound to the list object that was bound to `test.foo` before. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Psycho question
John Krukoff: One possibility for the performance difference, is that as I understand it the psyco developer has moved on to working on pypy, and probably isn't interested in keeping psyco updated and optimized for new python syntax. Somebody correct me if I'm wrong, but last I heard there's no expectation of a python 3.0 compatible version of psyco, either. But for me on the short term Python 3 is probably more important than pypy, and I'd like to keep using Psyco... Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: numpy and filtering (was: Fastest way to store ints and floats on disk)
Laszlo Nagy wrote: Attached there is an example program that only requires numpy. At the end I have two numpy array: rdims: [[3 1 1] [0 0 4] [1 3 0] [2 2 0] [3 3 3] [0 0 2]] rmeas: [[10.0 254.0] [4.0 200.0] [5.0 185.0] [5000.0 160.0] [15.0 260.0] [2.0 180.0]] I would like to use numpy to create statistic, for example the mean value of the prices: rmeas[:,0] # Prices of cars array([10.0, 4.0, 5.0, 5000.0, 15.0, 2.0], dtype=float96) rmeas[:,0].mean() # Mean price 60833.3321 However, I only want to do this for 'color=yellow' or 'year=2003, make=Ford' etc. I wonder if there a built-in numpy method that can filter out rows using a set of values. E.g. create a view of the original array or a new array that contains only the filtered rows. I know how to do it from Python with iterators, but I wonder if there is a better way to do it in numpy. (I'm new to numpy please forgive me if this is a dumb question.) It's not, but you will get more help on the numpy-discussion mailing list than here. http://www.scipy.org/Mailing_Lists I would normally answer your question, too, but I'm on vacation and have to run off to a party right now. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: benchmark
Dhananjay wrote: On Aug 7, 11:58 pm, Terry Reedy [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: Are there any implications of using psyco ? It compiles statements to machine code for each set of types used in the statement or code block over the history of the run. So code used polymorphically with several combinations of types can end up with several compiled versions (same as with C++ templates). (But a few extra megabytes in the running image is less of an issue than it was even 5 or so years ago.) And time spent compiling for a combination used just once gains little. So it works best with numeric code used just for ints or floats. Terry J. Reedy But if site caching is indeed being adopted by so many dynamic language runtime environments, I kind of wonder what makes python hold back from bringing it in to its core. Is it that a question of time and effort, Yes, and of priorities of the *current* volunteer developers, and of complexity and maintainability and their impact on being dependably correct. or is there something that doesn't make it appropriate to python ? How about less necessary. Python was designed to be extended by native code. The built-in functions and classes are built-in extensions. The built-in extensions in the stdlib are importable extensions**. *So are native-code 3rd party extensions*! Numeric, Python's first killer app, and now numpy, which both wrap standard Fortran and C libraries, have been standard associated parts of 'Python' (CPython) as used in the science, engineering, and technical community for over a decade. There are features in Python that were introduced for their use. Python 3.0 has (if plans get fulfilled) a new multi-dimensional buffer class/interface/C-API (not sure of the details ;-) introduced by Travis Oliphant of NumPy for use by extension writers so extensions, built-in or 3rd-party, can work together (share C level date) without copying. For instance, the C-level data for an image imported into a cooperating image program could be directly manipulated by NumPy and then directly blitted on the screen by a display manager. About benchmarks: machine speed benchmarks miss the point that the real limiting factor in information processing is programmer availability and writing and debugging speed. Python was optimized for *this*, not machine speed per se, knowing that most machine bottlenecks could be rewritten in C or another low-level language. Why reinvent that wheel? Measuring programmer productivity is hard, but it is real. Number-crunching benchmarks which disallow NumPy because it is not distributed with the 'core' by PSF (although it *is* by other packagers), are simply braindead. If a scientist/engineer/technologist saves half an hour setting up a 10-hour run by using Python instead of C, it is *completely irrelevant* that the C interface to the number-crunching libraries might run in a 1/10 second instead of, say, 10 seconds. That is why such people developed Numeric and then NumPy. None of this is to say that continued development of Psyco or equivalent for new versions would not be great. But that comes down to *someone* volunteering the resources. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
sending to an xterm
Howdy,
I want to open an xterm, send it a command and have it execute it.
I thought pexpect would do this, but I've been unsuccessful.
term = pexpect.spawn('xterm')
starts an xterm, but
term.sendline('ls')
doesn't seem to do anything.
Suggestions?
Thanks,
Kent
--
http://mail.python.org/mailman/listinfo/python-list
Re: Best practise implementation for equal by value objects
Slaunger wrote:
OK, i am encouraged to carry on my quest with the eval(repr)) for my
'nice' classes.
I just revisited the documentation for eval and noticed that there are
optional globals
and locals name space variables, that one could specify:
http://docs.python.org/lib/built-in-funcs.html
Quite frankly I do not understand how to make use of these parameters,
but it is my feeling
that if I enforce a convention of always specifying the globals/locals
parameter in a specific
manner:
assert eval(repr(x), globals, locals) == x
would work independent of how I have imported the module under test.
I have no opinion as to whether you should or should not use eval beyond
testing. But I believe the following will work and teach a bit more
too. In one module, define 'mynice = {'Age':Age, ...}' for your nice
classes (that module could import from other modules and use dotted
names as needed). Then eval(repr(x), mynice, mynice) should work
anywhere (as long as mynice has been imported!).
--
http://mail.python.org/mailman/listinfo/python-list
Re: sending to an xterm
Kent Tenney wrote:
Howdy,
I want to open an xterm, send it a command and have it execute it.
I thought pexpect would do this, but I've been unsuccessful.
term = pexpect.spawn('xterm')
starts an xterm, but
term.sendline('ls')
doesn't seem to do anything.
Suggestions?
Thanks,
Kent
--
http://mail.python.org/mailman/listinfo/python-list
expect or http://www.noah.org/wiki/Pexpect
Emile
--
http://mail.python.org/mailman/listinfo/python-list
Re: sending to an xterm
On Fri, Aug 08, 2008 at 08:25:19PM +, Kent Tenney wrote: Howdy, I want to open an xterm, send it a command and have it execute it. You can't do that. xterm doesn't execute shell commands passed on stdin... It can, however, execute one passed on the command line. Instead of just running xterm, you can run xterm -e 'cmd foo bar' where cmd is the program to run and foo and bar are its arguments. The problem is that as soon as the program exits, xterm will exit also. -- Derek D. Martin http://www.pizzashack.org/ GPG Key ID: 0x81CFE75D pgpMXKtm5Rt7A.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: I need a Python mentor
A. Joseph wrote: *Please the first message i sent out contain error, i`m very very sorry.* Hello everybody, i`m new to this list. I was programming in PHP before, so just of recent I started learning python. I need someone who I can be giving me some assignment based on the chapter I read in the book, and tell person will sometime review my code and tell me if it well structured. Can you be my mentor? Abah Josep -- http://mail.python.org/mailman/listinfo/python-list Try the tutor list... http://mail.python.org/mailman/listinfo/tutor Emile -- http://mail.python.org/mailman/listinfo/python-list
Re: small issue with Idle
Lie wrote: On Aug 8, 9:41 pm, v4vijayakumar [EMAIL PROTECTED] wrote: When you press 'home' button cursor goes before prompt. This is little uncomfortable. I am using Idle 1.2.2. (python 2.5.2.) This is IDLE's behavior, not really python's. Anyway, I don't really mind the minor annoyance as you don't seriously program serious program in interactive mode (no pun intended). Anyway, if you feel really disturbed by this, you should file a bug in: http://bugs.python.org/ I verified that behavior is same in 3.0b2. I added a note to http://bugs.python.org/issue2704. In the meanwhile, PageUp PageDn will go where you want if there is text above the window to jump to. -- http://mail.python.org/mailman/listinfo/python-list
Re: small issue with Idle
Mike Driscoll wrote: There's a free version of Wing IDE that has an IDLE-like interface that doesn't have this issue...or you could just use the command line version of IDLE. What are you referring to? -- http://mail.python.org/mailman/listinfo/python-list
Re: sending to an xterm
Derek Martin code at pizzashack.org writes: On Fri, Aug 08, 2008 at 08:25:19PM +, Kent Tenney wrote: Howdy, I want to open an xterm, send it a command and have it execute it. You can't do that. xterm doesn't execute shell commands passed on stdin... It can, however, execute one passed on the command line. Instead of just running xterm, you can run xterm -e 'cmd foo bar' where cmd is the program to run and foo and bar are its arguments. The problem is that as soon as the program exits, xterm will exit also. OK, I see that. (getting off topic) any chance of keeping the xterm open after running the command? Thanks, Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: sending to an xterm
Derek Martin code at pizzashack.org writes: On Fri, Aug 08, 2008 at 08:25:19PM +, Kent Tenney wrote: Howdy, I want to open an xterm, send it a command and have it execute it. You can't do that. xterm doesn't execute shell commands passed on stdin... It can, however, execute one passed on the command line. Instead of just running xterm, you can run xterm -e 'cmd foo bar' where cmd is the program to run and foo and bar are its arguments. The problem is that as soon as the program exits, xterm will exit also. Sorry to reply before getting googly This appears to be a solution; xterm -e ls; bash http://www.linuxforums.org/forum/misc/115239-getting-prompt-after-xterm-e-command.html -- http://mail.python.org/mailman/listinfo/python-list
RE: I need a Python mentor
U...yea _ From: A. Joseph [mailto:[EMAIL PROTECTED] Sent: Friday, August 08, 2008 1:44 PM To: python-list@python.org Subject: I need a Python mentor How are you? You look good; I will like to meet you. Visit my profile and drop some line for me. Abah Hello everybody, i`m new to this list. I was programming in PHP before, so just of recent I started learning python. I need someone who I can be giving me some assignment based on the chapter I read in the book, and tell person will sometime review my code and tell me if it well structured. Can you be my mentor? -- http://mail.python.org/mailman/listinfo/python-list
Re: Keg - A python web framework
Hi, Thank you for the comments so far. To be honest with you I didn't know about pycoon until Bukzor mentioned it. There appears to be some similarities between the two projects. However, I think I'd have to take a closer look at it to be sure that I'm not duplicating the efforts made in that project. As to the question on how different this is from other frameworks, I think there are certainly many similarities. As I admitted in the writeup, it draws from other projects including django. However, there is one new idea I haven't seen anywhere . . . not yet at least. In keg, I try to use URL pattern matching to run one or more functions required to generate the page the URL is pointing to. For instance, when you try to access a page like http://www.python.org Keg will run all functions whose URL regex matches the URL requested. Their output is then combined to generate the resulting page. With this approach, we could have functions that generate menus, those that generate page content and those that manage logins. These could all be separately maintained. Keg ties their outputs all together to generate the page. This means you could work on a menu system and not worry about how you will generate ads for the page. The possibilities are endless . . . at least in theory. Also, each function receives the same input. This means that the execution of one function does not really affect the execution of any others. Hopefully this makes debugging much easier. Another good effect of this idea is that all functions can be run in parallel since they are independent. -- http://mail.python.org/mailman/listinfo/python-list
RE: sending to an xterm
since I do not have access to xterm, here is the interactive session for
spawning bash(another session if you will), sending ls command to it, and
retrieving the results.
things to note are:
1. after spawning expect for the prompt, timeout, and eof #which ever happens
first
2. return value is the action that matched
3. if prompt matched, the 'before' has the results
4. even the command 'ls' with '\r\n' will be in the results.
actual session--
[EMAIL PROTECTED]:/c/Edwin/Projects/expect
$ python
Python 2.5.1 (r251:54863, May 18 2007, 16:56:43)
[GCC 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)] on cygwin
Type help, copyright, credits or license for more information.
import pexpect
c = pexpect.spawn('/bin/bash')
c.expect([pexpect.TIMEOUT, pexpect.EOF, '\$ '])
2
c.before
'[EMAIL PROTECTED]:/c/Edwin/Projects/expect\r\n'
c.after
'$ '
c.sendline('ls')
3
c.expect([pexpect.TIMEOUT, pexpect.EOF, '\$ '])
2
c.before
'[EMAIL PROTECTED]:/c/Edwin/Projects/expect\r\n'
c.after
'$ '
exit()
[EMAIL PROTECTED]:/c/Edwin/Projects/expect
$
---
good luck
Edwin
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
On Behalf Of Kent Tenney
Sent: Friday, August 08, 2008 4:25 PM
To: python-list@python.org
Subject: sending to an xterm
Howdy,
I want to open an xterm, send it a command and have it execute it.
I thought pexpect would do this, but I've been unsuccessful.
term = pexpect.spawn('xterm')
starts an xterm, but
term.sendline('ls')
doesn't seem to do anything.
Suggestions?
Thanks,
Kent
--
http://mail.python.org/mailman/listinfo/python-list
The information contained in this message and any attachment may be
proprietary, confidential, and privileged or subject to the work
product doctrine and thus protected from disclosure. If the reader
of this message is not the intended recipient, or an employee or
agent responsible for delivering this message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof. Thank you.
--
http://mail.python.org/mailman/listinfo/python-list
maybe a stupid question
Hi, I suppose this has already been asked in the list, but I ask anyway: I want to determine from where my python app is executed, but I want to determine the path of the real script file, not the path of the command being executed (in case of symlink in a *bin dir in the system). I explain: I have an app installed in /usr/lib/python2.5/site-package/MyApp I have a symlink in /usr/local/bin that points to /usr/lib/python2.5/site-package/MyApp/myscript.py Then, when I launch my script from anywhere using the symlink, how to determine that the script is located in /usr/lib/python2.5/site-package/MyApp ? Regards, Strato -- http://mail.python.org/mailman/listinfo/python-list
Re: Keg - A python web framework
eghansah wrote: As to the question on how different this is from other frameworks, I think there are certainly many similarities. As I admitted in the writeup, it draws from other projects including django. However, there is one new idea I haven't seen anywhere . . . not yet at least. In keg, I try to use URL pattern matching to run one or more functions required to generate the page the URL is pointing to. For instance, when you try to access a page like http://www.python.org http://www.python.org/ Keg will run all functions whose URL regex matches the URL requested. Their output is then combined to generate the resulting page. With this approach, we could have functions that generate menus, those that generate page content and those that manage logins. These could all be separately maintained. Keg ties their outputs all together to generate the page. This means you could work on a menu system and not worry about how you will generate ads for the page. The possibilities are endless . . . at least in theory. Also, each function receives the same input. This means that the execution of one function does not really affect the execution of any others. Hopefully this makes debugging much easier. Another good effect of this idea is that all functions can be run in parallel since they are independent. So make your project an add-on to Django or other frameworks. You tell Django to send all requests to key.py. Keg.py runs the pattern matcher, call the functions, and re-assembles the result to pass back to Django for delivery. The functions then have all other components of Django available. In other words, don't reinvent the wheel, invent a new wheel cover*. Terry Jan Reedy This is possibly a new version of an old saying. Other endings I found on Google (first 2000 hits) are '', 'improve it', 'improve on it', 'just add new tyres', 'just identify a colleague (who has done it)', 'Patch, extend or subclass an existing module', 're-invent its use!', 'write something new', and '(or worse, a flat tire)'. -- http://mail.python.org/mailman/listinfo/python-list
Re: maybe a stupid question
Strato wrote: I have an app installed in /usr/lib/python2.5/site-package/MyApp I have a symlink in /usr/local/bin that points to /usr/lib/python2.5/site-package/MyApp/myscript.py Then, when I launch my script from anywhere using the symlink, how to determine that the script is located in /usr/lib/python2.5/site-package/MyApp ? Put this in myscript.py: import os.path HERE = os.path.dirname(os.path.abspath(__file__)) You may also need HERE = os.path.realpath(HERE) Explanation: Almost every module has a global variable __file__. It points to the path from which the module was loaded. os.path.abspath() gives you the absolute path to the module. os.path.dirname() strips away the file part and gives you the path to the directory. os.path.realpath() migt be required to eliminate all symbolic links. Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: variable expansion with sqlite
marc wyburn wrote: Hi and thanks, I was hoping to avoid having to weld qmarks together but I guess that's why people use things like SQL alchemy instead. It's a good lesson anyway. The '?' substitution is there to safely handle untrusted input. You *don't* want to pass in arbitrary user data into random parts of an SQL statement (or your database will get 0wned). I think of it as a reminder that when you have to construct your own query template by using ... %s ... % (foo) to bypass this limitation, that you had better be darn sure the parameters you are passing in are safe. Kris -- http://mail.python.org/mailman/listinfo/python-list
Win32 trouble with threading, signals, and sleep()
I'm trying to track down an issue with a multi-threaded program that is responsible for handling real-time monitoring a business process. Different threads track various aspects of the process and all of the statistics filter back to the main thread for analysis. The program is run as a scheduled task, and various stats are shown in the console window (dos box) as it runs. Normally the main thread tells the worker threads to stop (using an Event()) when the work is done. I just recently added some signal handlers to the program to send out an email if someone comes along and closes the console window. (BTW, sometimes closing the app is legitimate, so I don't want to just disable it or run the process in the background) I'm running into this issue on Windows with the follow exception at the time when the signal handler is called: Traceback (most recent call last): ... self.done.wait(30) File D:\Python24\lib\threading.py, line 348, in wait self.__cond.wait(timeout) File D:\Python24\lib\threading.py, line 222, in wait _sleep(delay) IOError: [Errno 4] Interrupted function call I do development work on both Linux and Windows, and Linux doesn't seem to behave this way. I'm careful to make sure that the signal handler only directly interacts with the main thread to be safe, but the must be something I'm missing. I took a simple threading example and modified to demonstrate the problem. It fails the same way, every time I run it on Windows, and it works find each time on Linux. I temporarly stuck in a try/except block to just ignore IOErrors, but that seems like a faulty approach. I would have to add try/except block everywhere I call anything that could potentially call sleep(), which seems like a poor (and painful) solution. I also thought about replacing threading._sleep with a try/except wrapper function, but that seems kind of evil. Thanks in advance for any suggestions, Lowell Alleman - import threading import signal import time, random class Counter: def __init__(self): self.lock = threading.Lock() self.value = 0 def increment(self): self.lock.acquire() self.value = value = self.value + 1 self.lock.release() return value class Worker(threading.Thread): def __init__(self): self.done = threading.Event() threading.Thread.__init__(self) def run(self): while not self.done.isSet(): # pretend we're doing something that takes 10-100 ms value = counter.increment() # increment global counter time.sleep(random.randint(10, 100) / 1000.0) print self.getName(), -- task, i, finished, value def stop(self): self.done.set() def handler(sig, frame): print Signal handler. Sig=%r % sig global workers for w in workers: w.stop() counter = Counter() workers = [ Worker() for i in range(10) ] for w in workers: w.start() # Install my custom signal handler which tells worker threads to stop try: # Win32 signal.signal(signal.SIGBREAK, handler) except: # Linux signal.signal(signal.SIGTERM, handler) signal.signal(signal.SIGINT, handler) print Please press Ctrl-C/Ctrl-Break or close the console window now... # Main thread sleeps waiting for work to be done... time.sleep(60) # Wait for all workers to finish print Stop All workers! for w in workers: w.stop() print Joining all workers to main! for w in workers: w.join() - Traceback (most recent call last): File python_thread_signal_issue.py, line 45, in ? time.sleep(60) IOError: [Errno 4] Interrupted function call -- http://mail.python.org/mailman/listinfo/python-list
Remove the first few(or any amount really) of letters in a string
Lets say I've got a stirng: blah This is my string blah I want to get rid of the blah's but keep the This is my string. I know you can do this with a for loop, but that is messy and a pain. So does anyone have any suggestions on how to do this? -- View this message in context: http://www.nabble.com/Remove-the-first-few%28or-any-amount-really%29-of-letters-in-a-string-tp18901736p18901736.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
Re: Remove the first few(or any amount really) of letters in a string
Alexnb wrote: Lets say I've got a stirng: blah This is my string blah I want to get rid of the blah's but keep the This is my string. I know you can do this with a for loop, but that is messy and a pain. So does anyone have any suggestions on how to do this? Strings are immutable. Just slice out what you want. IDLE 3.0b2 blah This is what I want. blah blah[5:25] 'This is what I want.' -- http://mail.python.org/mailman/listinfo/python-list
Re: CAB files
there is 2 files: text2pdf.py and cab.py but I get a cab, in which there is a file text2pdf.py in it, but cab.py is created as a directory! [your cab.py starts] blahblah if __name__ == __main__: import os, glob hfci = HFCI(my-first.cab, verbose=1) files = glob.glob(r*.py) for fnm in files: hfci.AddFile(fnm) hfci.Close() [/your cab.py ends] From: Thomas Heller [EMAIL PROTECTED] To: python-list@python.org Date: Fri, 08 Aug 2008 16:29:10 +0200 Subject: Re: CAB files Virgil Stokes schrieb: I would appreciate python code for creating *.cab files. --V. Stokes Here is some code that I have still laying around. It has never been used in production and I do not know what you can do with the cab files it creates, but I have been able to create a cab and open it with winzip. -- http://mail.python.org/mailman/listinfo/python-list
Quality of Standard Modules
I read an interview with Guido at http://www.techworld.com.au/article/255835/a-z_programming_languages_python and that's very interesting. In that article, he said there are also a lot of modules that aren't particularly well thought-out, or serve only a very small specialized audience, or don't work well with other modules. I'm curious what modules he's refering and other Pythonistas feel it's not pythonic. Can you share some of your thought? -- http://mail.python.org/mailman/listinfo/python-list
Re: sending to an xterm
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Kent Tenney wrote: Derek Martin code at pizzashack.org writes: On Fri, Aug 08, 2008 at 08:25:19PM +, Kent Tenney wrote: Howdy, I want to open an xterm, send it a command and have it execute it. You can't do that. xterm doesn't execute shell commands passed on stdin... It can, however, execute one passed on the command line. Instead of just running xterm, you can run xterm -e 'cmd foo bar' where cmd is the program to run and foo and bar are its arguments. The problem is that as soon as the program exits, xterm will exit also. OK, I see that. (getting off topic) any chance of keeping the xterm open after running the command? Thanks, Kent xterm -hold -e whatever -- http://mail.python.org/mailman/listinfo/python-list - -- Rich Healey - [EMAIL PROTECTED] Developer / Systems Admin - OpenPGP: 0x8C8147807 MSN: [EMAIL PROTECTED] AIM: richohealey33 irc.psych0tik.net- #hbh #admins richohealey irc.freenode.org - #hbh #debian PythonNinja -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkidKIAACgkQLeTfO4yBSAclUwCg3uuvxxWHgZ/vqenrmaNIV/iE ceQAn3e8oC6t0rTLtVhpeisujnqq8jlh =4s8n -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
[issue3519] Evaluation order example lacks suffix
Georg Brandl [EMAIL PROTECTED] added the comment: Thanks, fixed in r65591. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3519 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3429] urllib.urlopen() return type
Georg Brandl [EMAIL PROTECTED] added the comment: Agreed. -- resolution: - works for me status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3522] zip() function example in tutorial
Georg Brandl [EMAIL PROTECTED] added the comment: Thanks, applied in r65592. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3522 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3523] Reverse quotes in Python 3.0 tutorial
Georg Brandl [EMAIL PROTECTED] added the comment: Thanks, applied in r65593. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3523 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3525] Changes to exceptions not reflected in tutorial examples.
Georg Brandl [EMAIL PROTECTED] added the comment: Thanks, applied in r65594. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3525 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3524] IOError when attempting negative seek in file (Python 3.0 tutorial)
Georg Brandl [EMAIL PROTECTED] added the comment: Since the file is a text file, such seeking is not possible. I've now updated the whole section about files; in particular there was also an outdated description of text vs. binary mode. Committed r65595. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3524 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3429] urllib.urlopen() return type
ThomasH [EMAIL PROTECTED] added the comment: On Fri, Aug 8, 2008 at 2:04 AM, Senthil [EMAIL PROTECTED] wrote: Senthil [EMAIL PROTECTED] added the comment: I agree with Benjamin on this issue, describing what is a File like Object is so much un-needed in Python and especially at urlopen function. Users have been able to understand and use it properly from a long time. If only it were more file-like. But, oh, it adds info() and geturl() methods which you have to string-search for to find the proper description in the prose. And, ah, the size argument of the read() method doesn't quite behave like on other file-like objects, but there you go. And, uh, by the way, you really can't use it in places where a true built-in file object is required (and I'm sure everybody knows what that means). - So much for file-like. I have no doubt that people can get along with the description as it is, because that's what they always try. My main point was that it is less approachable and breaks the usual format of a class documentation. But I see there is much agreement in keeping the status quo. ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3429] urllib.urlopen() return type
ThomasH [EMAIL PROTECTED] added the comment: Georg, you seem like a dedicated person. I'm sure you guys have thought about documenting return types of methods and functions in a standardized way, documenting classes so that you could fade in and out inherited features, and such. Where do you guys discuss general documentation issues? Is there a mailing list dedicated to Python documentation?! On Fri, Aug 8, 2008 at 8:43 AM, Georg Brandl [EMAIL PROTECTED] wrote: Georg Brandl [EMAIL PROTECTED] added the comment: Agreed. -- resolution: - works for me status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3429 ___ ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3270] test_multiprocessing: test_listener_client flakiness
Trent Nelson [EMAIL PROTECTED] added the comment: Jesse, thanks for capturing my e-mail thread in this issue. Can you comment on my last three paragraphs? Essentially, I think we should lock down the API and assert that Listener.address will always be a 'connectable' end-point. (i.e. not a wildcard host, 0.0.0.0, that can't be bound to by a socket, for example) This would mean raising an exception in Listener.__init__ if this invariant is violated. -- nosy: +Trent.Nelson ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3270 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1117601] os.path.exists returns false negatives in MAC environments.
Virgil Dupras [EMAIL PROTECTED] added the comment:
hsoft-dev:~ hsoft$ mkdir foobar
hsoft-dev:~ hsoft$ echo baz foobar/baz
hsoft-dev:~ hsoft$ chmod 000 foobar/baz
hsoft-dev:~ hsoft$ python
Python 2.5.2 (r252:60911, Feb 22 2008, 07:57:53)
[GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
Type help, copyright, credits or license for more information.
import os.path
os.path.exists('foobar/baz')
True
hsoft-dev:~ hsoft$ chmod 000 foobar
hsoft-dev:~ hsoft$ python
Python 2.5.2 (r252:60911, Feb 22 2008, 07:57:53)
[GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
Type help, copyright, credits or license for more information.
import os.path
os.path.exists('foobar/baz')
False
os.path.exists('foobar')
True
This seems like the correct behavior to me.
--
nosy: +vdupras
___
Python tracker [EMAIL PROTECTED]
http://bugs.python.org/issue1117601
___
___
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3270] test_multiprocessing: test_listener_client flakiness
Antoine Pitrou [EMAIL PROTECTED] added the comment: This would mean raising an exception in Listener.__init__ if this invariant is violated. If I understand the suggestion correctly, it would forbid people to listen on 0.0.0.0. I'm not sure it is the right correction for the problem. Listening on 0.0.0.0 can be handy when you are not sure which address to use; it would be better to address the problem elsewhere. IMO, the FQDN removal patch as uploaded by Jesse is simple and straight-forward enough, provided it does fix the bug. -- nosy: +pitrou ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3270 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1117601] os.path.exists returns false negatives in MAC environments.
Antoine Pitrou [EMAIL PROTECTED] added the comment: The only sane alternative to the current behaviour would be to raise an Exception from os.path.exists rather than returning False. But it would also break a lot of code, and complexify code using os.path.exists which currently doesn't need to check for exceptions. Returning True sounds completely incorrect on the other hand. If there is no other straightforward method than stat() to know if a path exists, I suggest closing this bug as wontfix. -- nosy: +pitrou ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue1117601 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
