🌐 Mailman 3 September 2010 - Python-list - python.org

Re: [Python-list] if the else short form
by Brendan Simon (eTRIX) Sept. 29, 2010

Sept. 29, 2010

On 29/09/10 9:20 PM, python-list-request(a)python.org wrote: > Subject: > if the else short form > From: > Tracubik <affdfsdfdsfsd(a)b.com> > Date: > 29 Sep 2010 10:42:37 GMT > > To: > python-list(a)python.org > > > Hi all, > I'm studying PyGTK tutorial and i've found this strange form: > > button = gtk.Button(("False,", "True,")[fill==True]) > > the label of button is True if fill==True, is False otherwise. > > i have googled for this form but i haven't found nothing, so can any of > you pass me any reference/link to this particular if/then/else form? > As others have pointed out, a tuple with two items is created and then indexed by the integer conversion of conditional. It is "creative" coding but I wouldn't recommend using it either. For this particular case you may achieve the same thing with: button = gtk.Button(str(fill==True)) or possibly just: button = gtk.Button(fill==True) It's a little better but still not great. A verbose form of something more generic may be: if fill: label = 'True' else: label = 'False' button = gtk.Button(label) or possibly: label = 'True' if fill else 'False' button = gtk.Button(label) or using a dict for label lookup: label = { True : 'True', False : 'False' } button = gtk.Button(label[fill]) Cheers, Brendan.

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System idle time under Linux
by Hugo Léveillé Sept. 29, 2010

Sept. 29, 2010

I have found it for windows and mac, but no luck under linux. Any idea? Thanks -- Hugo Léveillé hugol(a)fastmail.net

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Re: Example or recomendation of a webserver
by deets＠web.de Sept. 29, 2010

Sept. 29, 2010

Hidura <hidura(a)gmail.com> writes: > I am working on a web project written on Py3k and using mod_wsgi on > the Apache that have to recibes the request client via a xml structure > and i am facing a lot of troubles with the upload files mainly because > i can' t see where they are, so i' ve decide to write my own web > server-django and the others doen' t work for my propouse-, what you > recomend me for start that? not doing it. Reading the HTTP-RFC and the WSGI-PEP. And trying print environ["wsgi.input"].read() inside your wsgi-script. Then, use webob to wrap the whole WSGI-stuff to have at least a minimum of sensible abstraction. Or simply use Django or TurboGears2, follow the advices in their docs on how to depoly them using mod_wsgi, and be happy. Diez

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Re: Nautilus Python
by Lawrence D'Oliveiro Sept. 29, 2010

Sept. 29, 2010

In message <mailman.1101.1285626719.29448.python-list(a)python.org>, Eduardo Ribeiro wrote: > But it doesn't work. What messages do you get?

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Paramiko and Threading
by Jacob Abraham Sept. 29, 2010

Sept. 29, 2010

Hi, Could someone help me understand how to using threading along with paramiko. For some reason only one of two of the threads returns the output correctly. Some of the threads returns an empty string as command output, but no errors are thrown. My attempt is pasted below. regards, Jacob Abraham import time import socket import sys from threading import Thread import os from paramiko import AutoAddPolicy, SSHClient, SSHException, AuthenticationException class SSHCollector(Thread): def __init__(self, hostname, username, password, proto, loggername, zapiport, sshport=22, keepalive=True, tmo=60): Thread.__init__(self) self.hostname = hostname self.username = username self.password = password self.keepalive = keepalive self.tmo = tmo self._conn = None self.success = False self.client = SSHClient() self.client.load_system_host_keys() self.client.set_missing_host_key_policy(AutoAddPolicy()) self.client.set_log_channel(loggername) def _connect(self): if None is not self.client.get_transport() and self.client.get_transport().is_active(): return if None is self.username: self.client.connect(hostname=self.hostname, timeout=self.tmo) elif None is self.password: self.client.connect(hostname=self.hostname, username=self.username, password=self.password, timeout=self.tmo) else: self.client.connect(hostname=self.hostname, username=self.username, password=self.password, look_for_keys=False, timeout=self.tmo) trans = self.client.get_transport() trans.use_compression(True) trans.set_keepalive(1) def close(self): self.client.close() __del__ = close def execute(self, lcmd, auto_close=False, tmo=300, read_max=10*1024*1024): output = r'' err = r'' self._error = "" read_max = int(read_max/2) exit_status = False self._connect() chan = self.client.get_transport().open_session() if not self.keepalive: self.client.get_transport().set_keepalive(0) chan.settimeout(tmo) chan.exec_command(lcmd) stdin = chan.makefile('wb', -1) stdout = chan.makefile('rb', -1) stderr = chan.makefile_stderr('rb', -1) start_time = time.time() while True: if stderr.channel.recv_stderr_ready(): ret = stderr.read() if ret: err += ret if stdout.channel.recv_ready(): try: ret = stdout.read(read_max) if ret: output += ret except socket.timeout: pass exit_status = chan.exit_status_ready() if exit_status or ((int(start_time) + tmo) < int(time.time())): timeout = False if exit_status: exit_status = str(stderr.channel.recv_exit_status()) else: self.signal(chan, 'KILL') exit_status = str(stderr.channel.recv_exit_status()) timeout = True if stdin: stdin.channel.shutdown_write() stdin.close() if stdout.channel.recv_ready(): ret = stdout.read(read_max) if ret: output += ret stdout.close() if stderr.channel.recv_stderr_ready(): ret = stderr.read() if ret: err += ret err += "exit_status("+str(exit_status)+") to("+str(timeout)+")" stderr.close() break self.success = True if auto_close: self.client.close() return (output, err) def setCommand(self, cmd): self.cmd = cmd def runcmd(self, cmd): return self.execute(cmd, auto_close=True) def run(self): self.resultset = self.runcmd(self.cmd) if __name__ == '__main__': cmd = 'date' threads = [] a = time.time() for i in range(3): collector = SSHCollector('11.11.111.111', 'dummyusername', 'dummypassword', \ 'auto', 'dummylogger', None) collector.setCommand(cmd) threads.append(collector) for i in threads: i.start() for i in threads: i.join() for i in threads: print i.resultset b=time.time() print b-a

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Re: Upload files with wsgi
by Richard Thomas Sept. 29, 2010

Sept. 29, 2010

On Sep 28, 11:31 pm, Hidura <hid...(a)gmail.com> wrote: > Hello, i have a project on Python3k, and i have a very big problem i > don' t find how take an upload file i am using the wsgiref lib, and or > theres any way to connect to the client in order to get the file by > myself? > > Thank you > Diego Hidalgo. > > -- > Enviado desde mi dispositivo móvil > > Diego I. Hidalgo D. 'wsgiref' doesn't do that part of request handling. You want to use the 'cgi' module to parse the POST data: http://docs.python.org/library/cgi.html Remember to set the enctype on your <form> tags to multipart/form- data. Chard.

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Re: "Strong typing vs. strong testing"
by rustom Sept. 29, 2010

Sept. 29, 2010

On Sep 29, 5:32 am, Chris Rebert <c...(a)rebertia.com> wrote: > On Tue, Sep 28, 2010 at 2:55 AM, Malcolm McLean > > > > <malcolm.mcle...(a)btinternet.com> wrote: > > On Sep 27, 9:29 pm, p...(a)informatimago.com (Pascal J. Bourguignon) > > wrote: > >> On the other hand, with the dynamic typing mindset, you might even wrap > >> your values (of whatever numerical type) in a symbolic expression > >> mentionning the unit and perhaps other meta data, so that when the other > >> module receives it, it may notice (dynamically) that two values are not > >> of the same unit, but if compatible, it could (dynamically) convert into > >> the expected unit. Mission saved! > > > I'd like to design a language like this. If you add a quantity in > > inches to a quantity in centimetres you get a quantity in (say) > > metres. If you multiply them together you get an area, if you divide > > them you get a dimeionless scalar. If you divide a quantity in metres > > by a quantity in seconds you get a velocity, if you try to subtract > > them you get an error. > > Sounds just like Frink:http://futureboy.us/frinkdocs/http://en.wikipedia.org/wiki/Frink A currently developed language with units is curl: see http://developers.curl.com/userdocs/docs/en/dguide/quantities-basic.html

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partial sums problem
by kj Sept. 29, 2010

Sept. 29, 2010

The following attempt to get a list of partial sums fails: >>> s = 0 >>> [((s += t) and s) for t in range(1, 10)] File "<stdin>", line 1 [((s += t) and s) for t in range(1, 10)] ^ SyntaxError: invalid syntax What's the best way to get a list of partial sums? TIA! kj

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Re: Example or recomendation of a webserver
by Seebs Sept. 29, 2010

Sept. 29, 2010

On 2010-09-29, Hidura <hidura(a)gmail.com> wrote: > I am working on a web project written on Py3k and using mod_wsgi on > the Apache that have to recibes the request client via a xml structure > and i am facing a lot of troubles with the upload files mainly because > i can' t see where they are, so i' ve decide to write my own web > server-django and the others doen' t work for my propouse-, what you > recomend me for start that? I suggest learning to use one of the existing ones. The chances that, if you can't make the existing ones work, you can write something better, are usually pretty much nil. -s -- Copyright 2010, all wrongs reversed. Peter Seebach / usenet-nospam(a)seebs.net http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated! I am not speaking for my employer, although they do rent some of my opinions.

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Example or recomendation of a webserver
by Hidura Sept. 29, 2010

Sept. 29, 2010

I am working on a web project written on Py3k and using mod_wsgi on the Apache that have to recibes the request client via a xml structure and i am facing a lot of troubles with the upload files mainly because i can' t see where they are, so i' ve decide to write my own web server-django and the others doen' t work for my propouse-, what you recomend me for start that? -- Enviado desde mi dispositivo móvil Diego I. Hidalgo D.

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