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Comments:
<0> so i need to iterate through the dict stripping line[0] and line[1] ?
<1> a nice way to apply a function to all elements of a list and to capture the resulting list is to use the map function: map(str.strip, list)
<1> you could inline that as part of the list comprehension if you wanted.
<2> are there any python libraries which can load 3d models and perform operations on them?
<0> how about this, sjj: http://pastebin.com/662943
<1> Stork: not entirely ....
<0> not?
<1> Stork: the first line is making a dictionary from a list of lists....
<0> right
<1> you can either inline that map inside the list comprehension, before it gets turned into a dict, or extract a variable refering to the list ant create a dict at a later point....
<1> s/ant/and/
<0> err... who?
<1> Stork: have you read the tutorial?
<3> ctz: well, blender has python scripting
<0> sjj, a lot of it
<3> ctz: also check out soya3d and vpython
<4> ctz: possibly panda3d too
<2> taking a look, thanks :)
<5> hi all
<5> for line in inp.readlines():
<5> print line
<5> What is this readlines exactly
<5> And why can't i use for i in inp: ....
<6> payal: you can.
<5> Why do I neeed readlines
<7> you don't
<6> you don't have to
<6> teratorn: :P
<6> hmmm
<7> hi
<6> i shoud do a DOE project
<5> how can I get help for readlines in python inbild docs
<6> documentation for everyone
<6> payal: help(file.readline)
<5> thanks
<6> documentation for everyone, not just tech, is needed. without free, clear and understandable documentation for some things (e.g. gnupg), it can be hard to understand.
<5> so what are you gonnna write about
<6> payal: GPG - everyone wants to encrypt their emails and knw where a email is from. well, now they can ;)
<6> payal: I just need to write some of it up
<5> kbrooks: woww! have you written it
<5> I want to use mutt to encrypt my emails
<5> ofcourse with gpg
<8> why?
<8> fear or something?
<6> payal: no
<6> payal: not yet
<8> trying to hide your conversations?
<8> arent they legal?
<6> i need help and input on that.
<5> sorry I meant sign my emails
<6> while writing it
<5> what kind of help
<9> Anyone knows if an 'ELF' module exists for Python ? Basically something understanding the ELF format and the debug formats (DWARF, ..) ? Did not find anything using Google or on the Python.org page, but well, maybe someone knows here :-)
<6> payal: well, i'll write the "What is gnupg" thing first.
<5> oh!
<5> bbl
<10> hi, i'm using the elementtree lib, the lib provides a function tostring(), i want to call str(myElement) instead of importing tostring and calling tostring(myElement). when i set __str__ = tostring it fails (TypeError: tostring() takes at least 1 argument (0 given)
<10> )
<10> how can i bind a method to the __str__ of the cl*** with keeping the parameter?
<11> batlogg: Try `__str__ = lambda self: tostring(self)`?
<3> batlogg: are you ***igning it to the instance or cl*** ?
<11> I imagine that's not the right way to go about it, however
<11> (that ***umed you're ***igning to an instance)
<11> s/***umed/***umes
<10> Cerulean: i ***igned it to an instance
<10> is this bad?
<11> batlogg: Then the above should work
<3> afaik you need to convert to an instancemethod
<10> roryy: how would i do that?
<11> oh, yes. You'll want to bind the method
<3> cl*** a: p***; b=a(); b.__str__=types.MethodType(lambda self: 'foo',b,a)
<3> that seems to work
<11> batlogg: You could also add it to the cl*** using new.instancemethod
<3> ah
<3> is that where it is ;)
<11> yeah
<3> types.MethodType.__module__ usefully says '__builtin__'
<11> batlogg: If you add it to the cl*** you won't have the problem of having to attach the function to each object
<11> to be honest, you should probably just subcl***
<3> or you could just use tostring(foo) already ;)
<11> heh
<11> but how unintuitive is that? Why does it use tostring?
<11> about as unpythonic as it gets
<3> *shrug* he (effbot) uses it in the PIL too
<10> Cerulean: well, i'm using it within zope and need to take care about what i do on cl*** level (persistence), i create the object in the constructor...
<3> and it's used in numarray/numpy iirc
<10> before that it's just None
<10> roryy: if i do tostring() i need to import it all the time...
<11> what's wrong with importing it all the time?
<11> by all the time I ***ume you mean in each module that you use it
<10> Cerulean: probably nothing :) it's just inconvenient
<10> Cerulean: yes
<11> whatever makes your life easier
<10> thanks Cerulean, roryy
<12> hi all
<13> batlogg: curious why you're using ElementTree over lxml
<10> rockyburt: what's lxmls advantage rockyburt?
<13> batlogg: speed :)
<13> batlogg: its based on libxml2 i believe
<13> batlogg: its fa***en's creation
<10> rockyburt: speed really matters for me... how much difference?
<13> batlogg: and lxml provides the ElementTree api so they're mostly api compatible
<13> batlogg: significant i'm told but i haven't done any actual benchmarks
<10> (btw. i'm using cElementTree)
<13> oh
<13> well... fa***en would be the one to ask
<3> well, if they're API compatible it shouldn't be impossible to compare
<10> rockyburt: see benchmarks at http://effbot.org/zone/celementtree.htm
<10> celement tree should be twice as fast as lxml (as it builds on libxml2)
<13> you're right
<14> is nesting functions like if len(str(station[0]).split(".")[0])==2:
<14> bad?
<15> I hate nesting the [0] stuff
<16> voltagex: depends how readable it ends up to be
<15> I find that completely unreadable.
<16> voltagex: and how important readability is for you.
<3> voltagex: *shrug* it's your code; if you can read that easily, it's fine. I find it a bit dense
<6> voltagex: depends
<14> I think I'll split it up then
<6> i find it bad, but only if its nested too much
<14> second question, how can I preserve decimal places in a division operation?
<14> i.e. 96000 / 10000 = 9.6 not 9 or 10
<3> 96000. / 10000
<3> or float(96000)/10000
<3> (i can't quite see how many zeros there are there ;)
<6> 3 zeros after the tens place
<6> er
<14> ok
<6> :P
<17> roryy: to do variable coersion, at least one variable must be a float, or use float() function
<17> it returns a float on a integer division
<2> how to i go from "for a in bar" to for a,b,c in bar, where a,b,c are three elements from bar for each loop?
<2> (not overlapping?)
<3> ctz: i'd probably just do something like for i in xrange(len(bar)/3): a=bar[3*i]; b=bar[3*i+1]; c=bar[3*i+2]
<2> oh, bleh, i hoped there was a nice way to do it with list comprehensions
<3> itertools has all sorts of toys for things like this; maybe you can find something there
<18> you can make it slightly neater by doing range(0,len(bar),3) then you only need do do i, i+1 and i+2
<3> ah, there we go
<17> ctz: did you try to use map() function?
<18> what you really want to do is split bar into a list of 3-element lists (s/list/tuple/ possibly)
<19> ctz: [bar[i:i + 3] for i in range(0, len(bar), 3)]
<2> looks like itertools.islice does what i want
<2> eg for p1, p2, p3 in itertools.islice(hu.points, 0, None, 3): print p1, p2, p3
<3> that doesn't work here (gives 0, 3, ...)
<19> roryy: you can use those to access bar[i:i + 3]
<18> deltab: yup, that looks good
<3> deltab: sorry, that was for ctz. I put range(15) in for hu.points
<19> doesn't happen for me; I get TypeError: unpack non-sequence
<3> err, yeah, i changed it to for p in ...
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