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Comments:
<0> er
<0> it's a bit more complicated
<1> kjetilho : thanks mi amigo
<0> I have a simple cl*** with two variables, "id" and "children"
<1> deltab: thanks as well
<0> "children" is a list containing another instances of this cl***
<2> so in other words, can an average user learn Python or do i need something less complicated?
<3> anyone here uses kid the template framework ?
<4> HeLiX`89, work through a tutorial and see :)
<5> HeLiX`89: of course he can. http://www.python.org/doc/2.4.2/tut/tut.html
<6> can someone tell me if it's bad for some reason to define exceptions for a mdoule in __init__.py?
<6> i am having a really weird inconsistent problem
<0> the code is at http://pastebin.com/579167
<5> sockpuppet: why would you do that? the user of the cl*** needs to be able to access the exception cl*** to handle thrown errors
<0> my question is if such magic with stacks "works as expected", in other words, if it can emulate pointers
<6> why can't they if i do that?
<5> if you define a cl*** dynamically inside __init__?
<6> let's say i have cl*** a and it contains cl*** aException in __init__.py
<6> script.py can easily do from a import aException
<6> sorry if my terminology is bad, i am just learning the language
<7> jkt|: yes, references work pretty much like pointers
<5> not if you define aException _inside_ __init__, which is what you said
<6> well i just tested that on my system and it worked fine...
<7> he's talking __init__.py yes, not the __init__ method
<5> oh!
<6> yes. __init__.py
<7> sockpuppet: not really 'bad', not a common thing to see though
<5> sorry.
<6> let's say i also have a/b/__init__.py which contains bException
<6> from a/foo.py i can do "from a import aException"
<6> from b/bar.py i can't do "from b import bException" or any variation thereof
<6> it simply wont work
<6> i can do "from __init__ import bException"
<7> you should use absolute imports
<7> from a.b import bException
<6> that wont work either.
<7> it should, with correct path settings
<6> hmm
<0> joedj: so if I ***ign an instance to something, it will contain "pointer", right?
<6> i must be doing something grossly wrong ;)
<7> i.e. the parent of a/ must be in the path
<7> jkt|: effectively, yeah
<6> gah, wtf, it's working now
<6> that is what i had in the first place... i must have done something else wrong somewhere else.
<0> hmm
<2> ffs im only on page 3 and im already confused
<6> well thanks for the help ;)
<0> so if I have some variable representing "current item" and I want to make it point to something else
<7> sockpuppet: python 2.5 is supposed to introduce the concept of relative imports that might simplify this, i think
<0> I should del it at first, right?
<7> jkt|: no point, x = y; x = z; will decrease the reference count on 'y' just as x = y; del x; x = z; would
<6> i prefer to be explicit in my code anyways.
<5> HeLiX`89: skip straight to chapter 3
<5> but I see now that it isn't meant for novice programmers at all
<4> sockpuppet, that's not explicit, it's redundant :)
<6> oh.
<0> joedj: okay, but what if I want to store x for later use? something like stack.append(x); x = sth_else; x = stack.pop()?
<4> HeLiX`89, there are also python tutorials for non-programmers
<0> joedj: I was unable to find something about this in the official docs :(
<8> hi
<0> *anything
<9> '__keys' is a private member in a cl*** right?
<10> Yes.
<4> right, Alterego, but many people eschew their use
<9> benji, well, I know what I'm doing if that's what you mean ;)
<10> "at least two underscores at the beginning, and no more than one underscore at the end"
<9> Right, thank you
<10> That makes __foo__ public again.
<11> Alterego: no. it isn't.
<10> Bizarrest... convention... evar.
<11> Alterego: it's a variable that is mangled in order to stop namespace conflicts.
<10> It's as private as you get, anyway.
<11> hari`: that's also a lie.
<7> jkt|: you do it like that, that's fine
<10> Without inside-out objects or some other fugly hack.
<9> Yes, well. No need to be pedantic. I did read the part about private members only being "hard" to access.
<11> Alterego: if you have methods or values you wish to define as private, preceed them with a single underscore.
<4> which is what "private" means to me in the contex of Python
<10> Jerub, "lie" indicates a hostile accusation that I have some malice in saying what I'm saying.
<10> Jerub, no need to be an ***hole about it.
<11> Alterego: if you want to stop namespace conflicts with subcl***es (a good example is where you have a supercl*** that's a mixin, or something like an xmlrpc server cl***), use __foo
<11> hari`: sorry, it's a common colloquialism here.
<11> hari`: there are 'lie's, which are those facts that seem okay on the surface, but aren't actually accurate.
<10> Well, colloquialisms that make you seem like an ***hole might want to get reviewed.
<9> Well, now you're just confusing me :)
<11> hari`: then there are 'useful lies', which are things that seem okay on the surface, and it doesn't pay to dig.
<10> In C++, a "private" is not visible through normal means by a subcl***. I think __foo falls into that category.
<10> In C++, a "protected" is visible by a subcl*** but not by outsiders. I think "_foo" fits into that category.
<9> Actually, thinking about it. This object doesn't even need to be private.
<10> Though there's nothing *stopping* an outsider from doing all kinds of end-runs, or simply ignoring wisdom in the _foo case.
<11> hari`: yep, that's exactly it.
<10> So stop with the "lie" stuff, mmkay?
<12> do you every *really* need to use private and public?
<9> Well, I don't have to account for other peoples stupidity.
<11> hari`: in python, we only use __foo when it would break code to not use it, and we only use _foo when we do not want to publish something as an externally accessable api because it might change in future.
<10> amdy, it's like a lock on your front door-- it keeps the honest people out.
<7> Alterego: man, i want your job
<11> Alterego: yes, this is a primary tenant of python, all python programmers are automatically ***umed to be 'Consenting Adults'
<10> Not as a security concern, but as a design concern.
<13> tenet
<9> joedj, I'm self employed ;)
<11> oh wow, I've been mispelling that for years, thanks deltab
<10> A tenant of a python is, quite briefly, the chick inside that egg just swallowed.
<13> heh
<14> in xmpppy: AttributeError: Client instance has no attribute 'Dispatcher'
<14> I'm using the example from xmpppy site
<14> why this error?
<15> hi, i'm getting this error with an install on win32: ImportError: no module named com
<15> where do i find this com module
<16> i still can't get a bitmapbutton to work in wx, i dunno what i'm doing wrong
<16> i can't find an example though /:
<0> joedj: hmm, it seems that I haven't explained it correctly
<0> joedj: I need to "store pointer to the current object somewhere"
<0> and restore it after some time
<0> object means instance of a cl***
<17> jotham, what's the app you're trying to run?
<7> jkt|: stack.append(x); x = somethingElse; ...later...; x = stack.pop() # <- that's what this does
<16> button2 = wxBitmapButton(window, 100, wxBitmap = "testss.bmp") any ideas?
<0> joedj: yup, but I have something like stack.append(x); x.modify(); ...later... x = stack.pop()
<0> joedj: where x should carry the modifications done by modify() (which is not a method of that cl***, in fact)
<17> jkt|, given that x is a mutable object so that it can be modified, no problems there
<0> the example is at http://pastebin.com/579227
<18> tark: you shouldn't be using from wxPython import *
<18> tark: wx.BitmapButton(parent, id, wx.Bitmap("location/of/image.png"))
<19> in Python i read "everything not in a funtion belongs to __main__" do\can i specifically define __main__ myself to bring a sense of structure to the code? Rather than a few functions & some seemingly random statements?
<18> notice the wx. <--
<10> altf2o, nope, any module *could* be a __main__, it just depends on what you ask the python executable to start with.
<10> altf2o, you'll sometimes see a bit at the bottom of a .py file: if __name__ == "__main__":
<19> ahh, nice...
<20> hi, i have python2.4-cheetah installed on ubuntu but for some reason in /usr/lib/python2.4/site-packages/Cheetah there is no CacheRegion.py so i copied it over from a slackware install and am wondering if thats ok to do?
<10> That lets it run that code only if it's run individually. Otherwise it's for importing into other code.
<9> hari`, or both :)
<10> Alterego, exactly. The if __name__ thing is often used as unit tests for importable modules.
<16> finally found an example of it http://wiki.wxwidgets.org/docbrowse.cgi/wxwin_wxbitmapbutton.html
<21> Can an imported module access the toplevel code by import __main__ ?
<22> altf2o: The book? I heard bad things about it and find it dreadfully .. well...boring I think is what I'm looking for. ... diveintopython(.org) seems a lot better.
<19> so would it be similar to: def func(): ... if __name__ == "__main__": func() ..... ?
<16> my question is, if I want to store multiple bmps, do I have to have allocate memory for each one?
<0> hmm, that stacking doesn't seem to work :(
<16> or can i put them all onto bmpDC?
<10> Sgeo, yes. I've had to do that for some stupid code.
<10> Sgeo, and you can do import within a certain def, too. def foo(args): import __main__ ; __main__.STUPIDGLOBAL = 5 ; dosomething()
<19> halenger> what i'm currently reading is, "How To Think Like A Computer Scientist : Python Version" thus far, it's proven a very easy, but informative read. I have a couple books i found as well released under the GNU free doc. license.
<22> Ah, I've heard good things about that too. diveintopython.org is a free online book also.
<19> ahh, dive into python is actually one of them. I'll be sure to give that a read.
<9> altf2o, I read that a few days ago. It is very good if you're already a programmer.
<22> Heh. I use it as a general reference and find it turns up high on google when I search for something python related also. Handy, good examples and a good read in general.
<0> hmm, it was PEBKAC :)
<19> thx for the recommendation, i'm almost half way done w/ this one, i'll move to that one next.
<22> No worries.
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