I'm looking to speed up some python code. Replacing the python
interpreter with pypy was impressive. I noted that use of ctypes (in
cython?), specifically declaring variables as below, was reported as
giving a useful result:
cdef float myvar
cdef int i
under cython can provide a useful spee
On 11/14/2013 03:13 PM, Neil Cerutti wrote:
On 2013-11-14, Peter Chant wrote:
Or is it that - if I keep the code as simple as possible, PyPy
is about as fast as you can get?
PyPy profiles your code as it runs and creates, using a
just-in-time compiler, highly optimized versions of frequently
Hello,
I'm a bit of a python newby. I want to play and record sound
simultaneously. SWMixer seems able to do this but the examples use WAV
files. I'm trying to play a test tone. Can anyone give me a steer as to
why this fails?
import sys
import swmixer
import numpy
swmixer.init(samplerate=4
Robert Kern wrote:
>
>snd = swmixer.Sound(data=tone_data)
>
> Well, sort of. You probably need to scale your data and convert it to
> int16 format. It's currently in floating point format.
Done and working, thanks. As "file" was not needed for file="test.wav" I
assumed the data prefix for
Chaps,
I have the following code:
if pygame.font:
font = pygame.font.Font(None, 36)
#font = pygame.font.Font('liberationserif',36)
text = font.render("Esc to quit.", 1, (10, 10, 10))
textpos = text.get_rect()
textpos.centerx = background.get_rect().centerx
background.blit(
Martin Schöön wrote:
> Hence, are there any Perl to Python converters? So far I
> have only found bridgekeeper which really is (was?) consultancy.
> Apart from that I only find people recommending a manual re-write.
>
> Any thoughts/recommendations?
Voice of almost no experience. I once ran a f
thinke365 wrote:
>
> such as uniform distribution, Normal distribution or poisson distribution.
> is there any package that can be used to generate such random numbers.
>
I remeber being told that adding up 12 random numbers in the range 0-1
(which is what most computer random number genertors
Does anyone know whether PIL can handle 16 bit per channel RGB images?
PyPNG site (http://packages.python.org/pypng/ca.html) states PIL uses 8 bits
per channel internally.
Thanks,
Pete
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What are recommendations for simple audio playback? I want to play back on
linux (Slackware), which uses alsa. There seem to be many ways - but some
are a couple of years old and won't compile, like pymedia, or seem not
widely used and need pulseaudio (swmixer) which I have not installed. I
Simon Forman wrote:
> Someone else will probably give you better advice, but have you looked
> at pygame? IIRC they have a pretty simple audio playback api.
I'm using pygame for something else. Will it work without the graphics side
being used? I suppose trying it is the best plan!
Pete
--
Terry Reedy wrote:
> I can imagine a day when code compiled from Python is routinely
> time-competitive with hand-written C.
In my very limited experience it was very informative programming in C for
PIC microcontrollers and inspecting the assembly code produced. If I just
threw together loops
The following code generates a QStringList:
fileNames = QFileDialog.getOpenFileNames(None,"Chose raw file",".",)
Printing it:
print "Files selected "+QStringList(fileNames)
Results in:
TypeError: cannot concatenate 'str' and 'QStringList' objects
Any idea how to convert a QStingList into a py
Peter Otten wrote:
>
> Try it out yourself in the interactive interpreter. Here's a sample
> session:
>
Peter,
thanks. I've got some way to go with python and have only just started
looking at Qt, your help has been very useful.
Pete
--
http://www.petezilla.co.uk
--
http://mail.python.or
rlevesque wrote:
> Is there a way to compare 2 pdf files generated at different time but
> identical in every other respect and validate by program that the
> files are identical (for all practical purposes)?
I wonder, do the PDFs have a timestamp within them from when they are
created? That wo
Chaps,
what's the most appropriate (maintained) graphics library to use? PIL seems
to have last been updated in 2006 http://www.pythonware.com/products/pil/
and GD seems to be even older. Don't want to go down a dead end.
Pete
--
http://www.petezilla.co.uk
--
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Michiel Overtoom wrote:
> Peter Chant wrote:
>
>> what's the most appropriate (maintained) graphics library to use? PIL
>> seems to have last been updated in 2006
>> http://www.pythonware.com/products/pil/
>> and GD seems to be even older. Don't want
Peter Chant wrote:
>
> No, it does not. However, if PIL was updated last in 2006. Python in
> 2009
> has gone to version 3.1. If PIL is compatible with 3.1 then I'm fine.
> But I don't want to have to stick with Python 2.5 as the rest of the world
> moves on.
B
Max Erickson wrote:
> More recent months contain updates to the status of 1.1.7, it is
> headed towards a release. Preliminary tarballs and binaries are
> available on effbot.org:
>
> http://effbot.org/downloads/#imaging
> http://effbot.org/downloads/#pil
Excellent. From a very brief look it se
What is a good way to do this? There are instructions on making modules at:
http://docs.python.org/distutils/setupscript.html
however, what do you do if you don't want a module? I'm thinking of where
I'd like to split the code into several files and have a build / setup
script put it together a
Krishnakant wrote:
> Have you considered creating a deb or rpm package for your application?
> Most of the documentation for deb or rpm will talk about make files.
> But even a distutil based python package (with a setup.py) can be made
> into a deb package.
> Then the your requirement will be sa
Diez B. Roggisch wrote:
> You should consider using setuptools. Then you get an egg that people
> can install, and you can define "console_scripts"-entry-points which
> will be installed into /usr/local/bin or similar locations.
Interesting, I think I need to have a play with that. The cross pl
Chaps,
any ideas, I'm floundering - I don't quite get it. I have the following
files, setup.py and main.py in a directory pphoto:
# more setup.py
from setuptools import setup, find_packages
setup(
name = "Pphoto",
version = "0.1",
packages = find_packages(),
# other arguments he
Robert Kern wrote:
> You need to put main.py into the pphoto package.
>
> $ mkdir pphoto/
> $ mv main.py pphoto/
> $ touch pphoto/__init__.py
>
Thanks, it worked. Any ideas how to run the resulting scripts without
installing or running as root?
Pete
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