ANN: Python-on-a-chip releases PyMite r08
Python-on-a-chip Featuring the PyMite VM === :Author: Dean Hall :Copyright: Copyright 2002 Dean Hall. All rights reserved. PyMite is offered through one of two licenses: commercial or open-source. See the LICENSE file at the root of the package for licensing details. :Release: 08 :Site: http://www.pythononachip.org The Python-on-a-chip Project is pleased to announce the eighth release of PyMite. PyMite is a flyweight Python VM written from scratch to execute on 8-bit and larger microcontrollers with resources as limited as 64 KB of program memory (flash) and 4 KB of RAM. PyMite supports a subset of the Python 2.5 syntax and can execute a subset of the Python 2.5 bytecodes. PyMite can also be compiled, tested and executed on a desktop computer. Here are the important new features in this release: - Fixed a float endian issue - Fixed gc bug during ipm - Fixed segfault when num args is fewer than expected - Implemented plat module for mbed platform - Created porting document - Added scons build capability !!Dean -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: PyMite release 07
== PyMite == :Author: Dean Hall :Copyright: Copyright 2002 Dean Hall. All rights reserved. PyMite is offered through one of two licenses: commercial or open-source. See the LICENSE file at the root of the package for licensing details. :Release: 07 :Site: http://pymite.python-hosting.com/ I would like to announce the seventh release of PyMite. PyMite is a flyweight Python interpreter written from scratch to execute on 8-bit and larger microcontrollers with resources as limited as 64 KB of program memory (flash) and 4 KB of RAM. PyMite supports a subset of the Python 2.5 syntax and can execute a subset of the Python 2.5 bytecodes. PyMite can also be compiled, tested and executed on a desktop computer. Here are the important new features in this release: - Interactive PyMite (ipm) works on AVR over serial port - Added support for the keyword lambda - Added support for list comprehensions - Fixed sys.runInThread() - Implemented builtin function dir() - Added support for string and tuple replication - Added support for funcs with default args - Added support for the keyword del - Created configurable Float datatype - Added support for Boolean type and True/False constants - Created dict, list and string modules that operate on their respective built-in types - Added support to allow heap larger than 64 KB !!Dean -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: tinypy 1.1 released
On behalf of Phil Hassey, I would like to announce that tinypy 1.1 is released. Tinypy is a small Python (subset) VM. Download: http://tinypy.googlecode.com/files/tinypy-1.1.tar.gz Main Site: http://www.tinypy.org/ Code site: http://code.google.com/p/tinypy/ Group mailing list: http://groups.google.com/group/tinypy Author's blog: http://www.philhassey.com/blog/category/tinypy/ -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: PyCscope release 0.3
Hello, I would like to announce release 0.3 of PyCscope, a python script to generate a cscope index from a Python source tree. PyCscope uses Python's own parser and AST to generate the index, so it is a bit more accurate than plain cscope. PyCscope may be downloaded from the Cheeseshop http://pypi.python.org/pypi/pycscope/0.3 !!Dean -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Why does producer delay halt shell pipe?
Thanks, N, it works like a charm. !!Dean On Dec 11, 12:49 pm, Nanjundi [EMAIL PROTECTED] wrote: turn off python buffering it should work. export PYTHONUNBUFFERED=t -- http://mail.python.org/mailman/listinfo/python-list
Why does producer delay halt shell pipe?
I have 2 python scripts: examples of a producer and a filter, respectively: #! /usr/bin/env python import sys, time if __name__ == __main__: while True: sys.stdout.write(hello.\r\n) time.sleep(0.01) #! /usr/bin/env python import sys if __name__ == __main__: line = sys.stdin.readline() while line: sys.stdout.write(line.upper()) line = sys.stdin.readline() I wish to use these programs in Bash, like so: $ ./producer.py | ./filter.py However, the producer's time delay makes this not work. If I remove or reduce the delay, it works. In reality the producer has an unavoidable one-second delay. I do NOT want to use popen or its cousins because I want flexibility from the command line; I have many filters. Is there any way to write the filter to make this work? thanks, !!Dean -- http://mail.python.org/mailman/listinfo/python-list
ANN: PyMite release 05
.. Hello, I would like to announce the fifth release of PyMite. PyMite is still in its experimental stages. It works pretty well, but you need to know C, makefiles and how to cross-compile using gcc or other compiler. !!Dean == PyMite == :Author:Dean Hall :Copyright: Copyright 2002 Dean Hall. All of the source code for PyMite is licensed under the GNU General Public License v2, except for AT91SAM7 files released by Atmel without copyright. :Release: 05 :Site: http://pymite.python-hosting.com/ Purpose --- PyMite is a flyweight Python interpreter written from scratch to execute on 8-bit and larger microcontrollers with resources as limited as 64 KiB of program memory (flash) and 4 KiB of RAM. PyMite supports a subset of the Python 2.5 syntax and can execute a subset of the Python 2.5 bytecodes. PyMite can also be compiled, tested and executed on a desktop computer. Thanks -- My thanks go to these people for their contribution to this release of PyMite: - Philipp Adelt: Threading! Enhancements to pmImgCreator.py, issues and fixes. - www.webfaction.com: for providing quality, free project hosting on www.python-hosting.com Release Notes - This is PyMite release 05 * Release 05, 2007/05/10 * Release 04, 2006/12/14 * Release 03, 2006/09/18 * Release 02, 2006/08/11 - Sourceforge release. Do not use. * Release 01, 2003/03/18 - Internal release only .. :mode=rest: -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Does RETURN_VALUE always result in an empty stack?
I'm developing PyMite and would like to know a little detail about Python 2.5's design. Is it true that when the RETURN_VALUE executes and pops its argument, that at that point the stack should *always* be empty? I mean just the argument stack for that execution frame. I want to use this knowledge to test if PyMite is working properly. thanks, !!Dean -- http://mail.python.org/mailman/listinfo/python-list
Re: python-hosting.com projects: dead?
My project was temporarily disabled as well even though I had taken measures to block spam and had committed to svn and edited the trac wiki one day before. I was a bit concerned that maybe webfaction had lost my trac and svn during their house cleaning. But I emailed Remi and he had it going again promptly. They provide a great service for free and they give back to the Python community. They deserve our thanks and our patronage. With regard to how they handled it, I think they chose an effective method. Why should they support projects (for free) that aren't active? So just disable the project to see if anyone cares enough to find out why it's gone. Ever so slightly draconian, but good for keeping a clean house. I'm glad they have done this cleaning work, the server seems much more responsive now; no more errors from trac. !!Dean [EMAIL PROTECTED] wrote: Fredrik Lundh wrote: [EMAIL PROTECTED] wrote: my svn repository and tickets again. I'm sure you can understand why I was dismayed by this and why, unfortunately, I'll never be comfortable trusting my data to them again. not really, but maybe I've just worked with computers and human beings long enough not to treat every little hiccup as if it were the end of the world as we know it. You're misreading me very badly, or I'm expressing myself very poorly. Either way, you've inferred some kind of spittle-flecked freakout where I did not mean to imply one. JP -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a way to push data into Ical from Python ?
You could save your calendar_ to a .ics file which is in the VCal_ file format; but that requires the extra step of manually saving your calendar to a file or accessing the files that iCal creates behind the scenes in ~/Library/Application Support/iCal/Sources/ which is unclear and potentially hazardous to your data. I'm guessing you would prefer to access the calendar data directly from the script, like an Applescript would. One way would be to use Python's tie-ins to Applescript_ and apple events (AE). As you will read, this support isn't as strong as it used to be. Another idea that would require more effort, but earn you some hacker points, is to use PyObjC_ and access iCal's public programming interface. But by far the easiest is to google for what you want (my search was for: ical api), find the iCalModule_ and try to make that work for you. Although that module appears to only read the data and is targeted toward 3rd-party calendars that are stored in ~/Library/Calendars. share and enjoy, !!Dean .. _calendar: http://en.wikipedia.org/wiki/ICalendar .. _VCal: http://en.wikipedia.org/wiki/VCal .. _Applescript: http://pythonmac.org/wiki/AppleScript .. _PyObjC: http://pyobjc.sourceforge.net/ .. _iCalModule: http://www.devoesquared.com/Software/iCal_Module The Night Blogger wrote: Is there a way to pull push data into (Apple Mac OS X Calendar) Ical from Python ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Is anyone using Python for embedded applications?
Carl, I'm the lead developer for PyMite (http://pymite.python-hosting.com). I do quite a bit of embedded development with PyMite. PyMite is for much smaller target devices (8-bit and 32-bit microcontrollers) than you plan to use. I am currently writing a series of papers that will attempt to draw attention to the growing demand to use Python in the variety of embedded spaces. A rough draft of the first part in the series is seen here: http://members.capmac.org/~deanhall/python/piesI.html During research for the later parts of the series, I have found the following links that relate to Python in embedded devices: http://sourceforge.net/projects/pythonce http://sourceforge.net/projects/dietpython http://www.python.org/dev/summary/2006-09-16_2006-09-30/#shrinking-python http://cs.gmu.edu/~eclab/projects/robots/flockbots/pmwiki.php?n=Main.Python http://groups.google.com/group/comp.lang.python/browse_thread/thread/f3a8f9ac964d5b84/6922ac416664f002?lnk=gstq=%22embedded+system%22rnum=5#6922ac416664f002 regards, !!Dean Carl J. Van Arsdall wrote: Hendrik van Rooyen wrote: It depends a *lot* on what is meant by embedded : Ha, very true This definition seems to cover everything from: - a cut down PC in a non standard box, through - a processor in a Washing Machine, to - a bare PIC processor in a Burglar Alarm... We are considering now are mobile phone and pocket pc-esque devices. I know that several phones with arm processors are running an arm version of linux now, we're thinking how reasonable it might be to run python applications on a phone, and which python might best apply. Is there a good way to determine the minimum requirements for a python application? I'd imagine these might be something like the min requirements of python (cpython, pymite, etc) + additional requirements placed by the design of the application. Is there a good way to study a python application and figure that type of thing out? I think the main hassles are that you need something big enough to run a reasonable OS in, and it must support being programmed in C, (which most things do), and it must have some MegaBytes of RAM loose for the Python. (where more is merrier) Trying to run this on say an AVR or 8031 with a 64k address space and a scarcity of RAM, will, to say the least, be a bit of a challenge... As far as the OS goes, Linux is probably the best bet, if you can get it to fit in your hardware - It has been ported to ARM type processors from various companies (Atmel springs to mind), and is free, which is a help in a personal project. You could of course also roll your own kernel, which will be good practice, as with a limited set of peripherals its not THAT hard to do, but its a bit far away from Python - :- ) Yea, we are thinking on the more robust end of the embedded side. So a system capable of running Linux or Windows CE (or something similar) What display device are you going to use, or is it going to be a webserver sitting on a power over ethernet link? I haven't actually taken the plunge myself yet to put Python on any of the hardware we make, as it seems to add a lot of overhead to a simple device - but I come from the bottom up, as it were, and the idea is intriguing, as I in fact discovered Python because it is embedded in a GPS module we were evaluating for building into a device - so I will follow your progress with interest... -- Carl J. Van Arsdall [EMAIL PROTECTED] Build and Release MontaVista Software -- http://mail.python.org/mailman/listinfo/python-list
Re: seeking the Hello World of Packages
Kevin, I just posted a small package to the python package index. It has one source file of interest and some unit tests.The remaining files are either needed for or made by distutils. Should be pretty easy to follow if you've read the distutils docs. Note that the package you get does not have the MANIFEST.in file (the tool creates MANIFEST automatically using info from MANIFEST.in). http://cheeseshop.python.org/pypi/pycscope/0.2 share and enjoy, !!Dean -- http://mail.python.org/mailman/listinfo/python-list
