🌐 Mailman 3 March 2003 - Python-list - python.org

Re: Windows Messaging Service and Python
by Lexy Zhitenev March 3, 2003

March 3, 2003

"A" <printers(a)sendme.cz> wrote in message: news:mailman.1046515384.1086.python-list@python.org... > Hi ALL, > Can you tell me ( if it is possible from Python) how I can send a message to a computer by > using Windows Messaging Service? > Thanks for help > Ladislav > Not sure, maybe you need win32net.NetMessageBufferSend ? Lexy

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Re: beginner oo programming
by Multiscan March 3, 2003

March 3, 2003

On Tue, 25 Feb 2003 10:47:57 +0000, Steven Taschuk wrote: > > If you use Cartesian coordinates internally, the Cartesian > coordinate system object can access them directly. Other > coordinate system objects ask for the Cartesian representation and > convert. (This assumes that > v.components(polar) > delegates to, say, > polar.components(v) > And the reverse: vector(tuple, coordsystem) delegates to > coordsystem.makevector(tuple) or some such. The nice thing about > this scheme is that the knowledge of how to convert to/from a > given coordinate system is stored in the object which represents > that coordinate system. Good abstraction.) > > (Note, incidentally, that oblique (and rotated) coordinate systems > can be implemented with a matrix and a bit of linear algebra.) > > How does that sound? I couldn't imagine a better answer. Thanks very mutch ! giovanni

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Re: I like Unicode more than I used to...
by martin＠v.loewis.de March 3, 2003

March 3, 2003

Skip Montanaro <skip(a)pobox.com> writes: > The only obvious way to announce the encoding would be by exporting > an environment variable to the child program. On Unix, the convention is that the terminal should follow the locale's encoding; it is the user's responsibility to declare the locale so that it matches the terminal. On Win32, there is API to determine the input and output encoding of a console window (yes, they can be different), provided you have a "console handle". Regards, Martin

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PEP309 - built-in curry class (revisions)
by scav＠blueyonder.co.uk March 3, 2003

March 3, 2003

Before I upload another (less drastically ambitious) version of PEP 309, I want to thrash out a few things. Several people have said curry() belongs in the standard library rather than as a built-in. If so, what should the module name be, and what sort of other things might the module contain? The PEP is for a built-in of course, but I would be delighted with inclusion in the standard library too, so I would like to make a constructive proposal for it. How about the following? Module to be called "functional" (it can be a home for operations on higher-order functions in general.) functional.curry() as a nested function. functional.Curry as a class, so those who want the introspection and sub-classing can have it. An example of something else that might hypothetically belong in "functional" is compose(f,g) ==> (g(f(*args, **kw)). Although I have never seen an example where a compose is the clearest and nicest way to get something done (and it's not part of the PEP), if someone wants it in the future then "compose()" might as well go in the same module as curry(). Another thought: would a suitable reduced PEP 309, only asking for a standard library module of about 20 lines of code stand ANY chance of making 2.3? I must be a masochist asking a question like that, but what the hell... Peter

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Simple question, how can i create a record?
by EleKtR0 March 3, 2003

March 3, 2003

Hi! i'm reading a good manual about Python to learn it. it has an example where uses a module named "record" to import a class named "record". With record class i can create records on Python, but i'm not find the record module. How can i create records on Python? I use Python 2.2 on Suse Linux 8.0 Thanks! Python manual (in spanish): http://marmota.act.uji.es/MTP/pdf/python.pdf

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Recent progress in multiarray as a standard type in python?
by sdhyok＠yahoo.com March 3, 2003

March 3, 2003

I am wondering if there is any progress in making multiarray in Numeric as a standard type in python. It may be the most critical achievement for engineers and scientists who love python, like me. Shin, Daehyok

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Anti-Spam Research Group
by Terry Reedy March 3, 2003

March 3, 2003

http://www.wired.com/news/infostructure/0,1377,57868,00.html Excerpt: "The Internet Research Task Force, the closest thing the Internet has to a governing body for all matters technical, inaugurated the Anti-Spam Research Group this week to develop "a taxonomy of the (spam) problem and the proposed solutions."

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Re: Can Python work for me?
by goldstonrumpke＠hotmail.com March 2, 2003

March 2, 2003

I am thankful for all the advice ... I am reading along learning and digesting ... It is so much ... I am truely overwhelmed ... Adam

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using builtin exceptions
by Erik Price March 2, 2003

March 2, 2003

Hi, Is it considered bad practice to appropriate the "builtin" exceptions that ship with the stdlib in our own programs? For instance, "ValueError" is explicitly described by the documentation as being for the use of builtin functions only ("Raised when a built-in operation or function receives an argument that has the right type but an inappropriate value, and the situation is not described by a more precise exception such as IndexError."), but it's the exact same purpose I have in mind if I use it in my code: ### def __init__(self, shift_type, shift_start, shift_stop): if not Shift.pay_rates.has_key(shift_type): raise KeyError if shift_start > shift_stop: raise ValueError ... ### So is this okay to do? I ask this not strictly from a pragmatic perspective but also from a stylistic one.... Thanks, Erik -- Erik Price email: erikprice(a)mac.com jabber: erikprice(a)jabber.org

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rudimentary ssh cmd wrapper with 1 small (and hopefully obvious) bug
by Dreico-Hyper-Dynamics March 2, 2003

March 2, 2003

Greetings python folks ! In a fit of curiosity to code some Python for the 1st time ever, as a little project I made a rudimentary ssh command wrapper called brussh, the idea of which is to send commands to several machines at the same time (so far using a shell script loop and working on "1 target at a a time"), & working ideally in situations where ssh is configged to not need a passwd, using RSA/DSA keys or whatever you like. $ host001 > brush USAGE: You need to enter a hostname followed by some commands, like this: brush <hostame> <commands> <commands> ... It works fine except in situations where there is no output from the ssh command that it's throwing at the target i.e. $ host001 > brush host002 'ps -ef | grep ZZZZZZZZ' ===== HOST002 OUTPUT ===============================> Traceback (innermost last): File "/home/a/ad/scripts/brush", line 84, in ? print "=====", node_in_caps, "OUTPUT ===============================>\n", the_command() File "/home/a/ad/scripts/brush", line 65, in the_command return command_results NameError: command_results <<< ugly crash :( Otherwise it does what you expect: $ host001 > brush host002 'ps -ef | grep syslog' ===== HOST002 OUTPUT ===============================> root 538 1 0 Feb25 ? 00:22:04 syslogd -m 0 root 14624 1 0 Feb28 ? 00:00:05 /usr/sbin/notd -l syslog -- /usr $ host001 > --- Where this gets lost (and I'm not sure I fully understand what's going on in this bit of code) is here: ############################################################################ # ### Function "the_command" def the_command(): payload = string.join(sys.argv[1:]) sshcmd = 'ssh -1 -o StrictHostKeyChecking=no -l root ' + payload output = os.popen('{ ' + sshcmd + '; } 2>&1', 'r') while 1: line = output.readlines() if not line: break <<<<<<< is this the right way to handle a else: <<<<<<< possible 'null string output" situation ? command_response = string.join(line[:]) return command_response ############################################################################ # # # MAIN PROGRAM # ############################################################################ # import string, os, sys argnum = len(sys.argv) if argnum < 3: Usage() else: machine = sys.argv[1] node_in_caps = string.upper(machine) listening_status = is_it_listening() if listening_status == 1: print "=====", node_in_caps, "OUTPUT ===============================>\n", the_command() <<< else: print "X ===", node_in_caps, "IS NOT CONTACTABLE ================== X\n" sys.exit(1) I realise it's just a simple wrapper written by a beginner at this stage, but even so, can anyone give me any pointers as to what the obvious mistake is ? (hopefully obvious to you in this case =))) Thanks for you comments, Andrei

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