🌐 Mailman 3 March 2006 - Python-list - python.org

Re: how do you move to a new line in your text editor?
by John Salerno March 2, 2006

March 2, 2006

Paul McNett wrote: > That said, you should be able to tell your editor how to behave in the > indent/unindent case, no matter whether you use tabs or spaces. If not, > time to switch editors! ;) I definitely can, I'm just a little unsure about what the special outdenting cases might be. The way to do it in UltraEdit is to specify which characters (on a preceding line) an outdented line should follow, so obviously for a C language you could specify Unindent = '}' and that would help a lot. But with Python it seems more difficult to figure out the cases where you would outdent.

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Re: how do you move to a new line in your text editor?
by Bill Scherer March 2, 2006

March 2, 2006

John Salerno wrote: >I use UltraEdit right now, and it is possible to convert spaces and tabs >back and forth, but it's just an extra step. I was thinking about trying >vim, as I've heard it's easier to learn than emacs. > > Absolutely. It's also easier to learn to ride a Huffy than a Schwinn, Hondas are easier to drive than Toyotas, and Evian is easier to drink than Poland Spring. Do yourself a favor and learn them both. Then decide which is best for you. Bill

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Re: Simple System Tray Icon
by 3c273 March 2, 2006

March 2, 2006

"Thomas Heller" <theller(a)python.net> wrote in message news:mailman.2613.1141319094.27775.python-list@python.org... > 3c273 wrote: > > Can someone point me to a simple example that just shows an icon? I don't > > need it to anything but show up. Any help is appreciated. > > Louis > > > > > Simon Bruning has made something that should you get started. > > http://www.brunningonline.net/simon/blog/archives/001835.html > > Thomas I guess I should have capitalized the word 'simple' in my request :-) Thanks for your reply. I had already found this and it made the wx example look like a one-liner. I didn't realize that this was such a chore. Thanks again, I will keep trying. Louis

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Re: how do you move to a new line in your text editor?
by Bill Scherer March 2, 2006

March 2, 2006

John Salerno wrote: > This is a real small point, but I'd like to hear what others do in this > case. It's more an 'administrative' type question than Python code > question, but it still involves a bit of syntax. > > One thing I like to do is use tabs for my indentation, because this > makes it easy to outdent when I need to start a new line in column 1. I > can press backspace once and move 4 spaces to the left. > > But I read in the PEP that spaces are recommended over tabs. If this is > the case, it would involve pressing backspace 4 times (or 8, etc.) to > get back to column 1. > > So I'm wondering, how do you all handle moving around in your code in > cases like this? Is there some sort of consistency to these things that > you can write rules for your text editor to know when to outdent? It > doesn't seem like you can do this reliably, though. > We usually handle this by using an editor that "knows" Python. There are many. See http://wiki.python.org/moin/PythonEditors > -- > http://mail.python.org/mailman/listinfo/python-list >

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instances from bound methods
by Nick Craig-Wood March 2, 2006

March 2, 2006

I needed to find the instance from a bound method. Eg >>> class C(object): ... def fn(self): print "hello" ... >>> c=C() >>> fn=c.fn >>> fn <bound method C.fn of <__main__.C object at 0xb7dd2acc>> >>> fn.im_self <__main__.C object at 0xb7dd2acc> >>> fn.__self__ Traceback (most recent call last): File "<stdin>", line 1, in ? AttributeError: 'function' object has no attribute '__self__' >>> But I discovered that builtin objects work in a completely different way >>> fd=open("myfile","w") >>> fn=fd.write >>> fn.im_self Traceback (most recent call last): File "<stdin>", line 1, in ? AttributeError: 'builtin_function_or_method' object has no attribute 'im_self' >>> fn.__self__ <open file 'myfile', mode 'w' at 0xb7dc1260> >>> I wonder why? Is there a canonical way of doing it? -- Nick Craig-Wood <nick(a)craig-wood.com> -- http://www.craig-wood.com/nick

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Shared memory
by Sebastjan Trepca March 2, 2006

March 2, 2006

Hey! Are there any "live" modules for working with shared memory in Python? I found some but they are all dead(posh,shm)... Thanks, Sebastjan

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asynchat network send problems
by Andreas R. March 2, 2006

March 2, 2006

Hello, I'm using Python's asynchat module for network support in a Python-based game, and I run into two problems, both of which occur at random times. Most of the time, the network sending and receiving is perfect, but about 1 out of 10 times, it fails with one of these errors: -- Problem 1. When sending data, I sometimes the following exception: Handler connected 127.0.0.1:1242 at 0x2977800> (socket.error:(9, 'Bad file descriptor') [C:\Python24\lib\asynchat.py|initiate_send|219] [C:\Python24\lib\asyncore.py|send|332] [C:\Python24\lib\socket.py|_dummy|144]) -- Problem 2. Receiving data on the client is not always the same size as the data which is sent from the server. Network server is found here http://svn.gna.org/viewcvs/openrts/trunk/openrts/client/networkclient.py?re… Network client is found here: http://svn.gna.org/viewcvs/openrts/trunk/openrts/server/clienthandler.py?re… This is the sequence for sending data: 1. In clienthandler.py the method send_to_client() is called with whatever data should be sent to the client. 2. send_to_client() compresses the data, and passes it to the push() method of asynchat. 3. Client receives the data, and called found_terminator() in networkclient.py 4. In the found_terminator() method, the data is attempted to be uncompressed, but it failes, since the received data does not have the same size as the data which is sent. Sometimes, the difference in size is often 512 between client and server, when running len(packet) on the *compressed* packed. The len() of a large packet is usually about 64969. Complete source code is available at http://svn.gna.org/daily/openrts-snapshot.tar.gz Thanks anyone for the help, - Andreas R. www.openrts.org

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_tkinter.TclError: can't set "PY_VAR0": invalid command name "-1210125972check"
by Gregor Horvath March 2, 2006

March 2, 2006

Hi, I searched the web and docs but cannot figure out whats wrong with this code: #!/usr/bin/python import Tkinter as Tk class testtk(Tk.Frame): def __init__(self): self.root = Tk.Tk() Tk.Frame.__init__(self,self.root) self.frame = Tk.Frame(self.root) self.var = Tk.StringVar() self.var.trace_variable('w',self.check) Tk.Entry(self.frame, textvariable = self.var).pack() self.frame.pack() Tk.mainloop() def check(): pass if __name__ == "__main__": t = testtk() t.var.set("TEST") Result: Traceback (most recent call last): File "<stdin>", line 22, in ? File "/usr/lib/python2.3/lib-tk/Tkinter.py", line 191, in set return self._tk.globalsetvar(self._name, value) _tkinter.TclError: can't set "PY_VAR0": invalid command name "-1210125972check" Any ideas, why I cant set the variable var? -- Greg

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Simple System Tray Icon
by 3c273 March 2, 2006

March 2, 2006

Hello, I have a short looping script that runs in the background (Windows 2000) and I want to have a tray icon so I know that it is running. I have looked at wxTaskBarIcon and the examples on the web and in the demo, but it seems pretty complex and I haven't had any success even getting one to show up. Can someone point me to a simple example that just shows an icon? I don't need it to anything but show up. Any help is appreciated. Louis

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os.popen3 delivers no error exist status ?
by robert March 2, 2006

March 2, 2006

os.popen3 delivers no error exit status on .close() - while os.popen does Is this intended or a bug? How do I get the status? Robert Python 2.4.1 (#2, May 5 2005, 11:32:06) [GCC 3.3.5 (Debian 1:3.3.5-12)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> csi,cso,cse=os.popen3('recodex latin1:utf8 <text.lat1-noexist.txt','r') >>> csi.close();cso.read();cso.close();cse.read();cso.close() '' '/bin/sh: line 1: text.lat1-noexist.txt: No such file or directory\n' >>> cso=os.popen('recode latin1:utf8 <text.lat1-noexist.txt','r') >>> sh: line 1: text.lat1-noexist.txt: No such file or directory >>> cso.read();cso.close() '' 256 >>>

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