Re: That's really high-level: bits of beautiful python
Jeffrey Schwab wrote: > Max wrote: > > I was just thinking perhaps we should create some kind of collection of > > bits of "impressive" code like this. > > Do you mean something like the ASPN Cookbooks? > > http://aspn.activestate.com/ASPN/Cookbook/ > repositories, indexes and search engines for py code (pardon the small number ;-} http://www.vex.net/parnassus/ http://directory.google.com/Top/Computers/Programming/Languages/Python/Modules/ http://cheeseshop.python.org/ http://dmoz.org/Computers/Programming/Languages/Python/Modules/ http://aspn.activestate.com/ASPN/Cookbook/Python http://python.codezoo.com/ http://sourceforge.net/softwaremap/trove_list.php?form_cat=178&xdiscrim=178 http://www.bigbold.com/snippets/ http://www.voidspace.org.uk/cgi-bin/pysearch/search.py http://koders.com/ http://krugle.com/ http://www.codefetch.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: That's really high-level: bits of beautiful python
Max wrote:
> I have a friend who has been programming in C for many years, and he is
> a great fan of the language. However, he (and I) are about to start a
> python course, and he has been asking me a lot of questions. He often
> responds to my answers with "Urgh! Object-orientation!" and suchlike.
After "many years" of C programming, he's still wary of object orientation?
> But today we were discussing the problem of running externally-provided
> code (e.g. add-on modules). Neither of us knew how to do it in C, though
> I suggested using DLLs.
It depends on how the module was provided, and on the platform and tool
chain being used to build the code. It's typically not too hard on a
given platform, once you get used to it, but there's certainly no single
correct answer.
> However, I quickly installed python on his
> laptop and coded this:
>
> exec "import %s as ext_mod" % raw_input("Module: ")
> ext_mod.do()
exec'ing raw_input'd code gives me the willies.
> And created to sample modules with do() functions to demonstrate. He was
> impressed ("That's really high-level" were his words).
It is cool, isn't it? :)
> I was just thinking perhaps we should create some kind of collection of
> bits of "impressive" code like this.
Do you mean something like the ASPN Cookbooks?
http://aspn.activestate.com/ASPN/Cookbook/
If you keep track of some examples of "cool" stuff, I'll format them and
get some web space to post them. Try to give credit for each example.
> He also liked 99 Bottles in one line:
>
> print '\n'.join(["%d bottles of beer on the wall." % i for i in
> range(100,0,-1)])
A little shorter:
for i in range(99, 0, -1): print("%d bottles of beer on the wall." % i)
--
http://mail.python.org/mailman/listinfo/python-list
Re: That's really high-level: bits of beautiful python
Max wrote:
> But today we were discussing the problem of running externally-provided
> code (e.g. add-on modules). Neither of us knew how to do it in C, though
> I suggested using DLLs. However, I quickly installed python on his
> laptop and coded this:
>
> exec "import %s as ext_mod" % raw_input("Module: ")
> ext_mod.do()
Be careful with this - its fine for developer only use, but I'd avoid it
in production code. You leave the possibility for hackers to try to
import the module named 'os; os.system('rm -rf /'); import', or other
such deviousness.
Probably a better version:
ext_mod_name = raw_input("Module: ")
ext_mod = __import__(ext_mod_name, globals(), locals(), ['__dict__'])
ext_mod.do()
But granted, it's less cool than the original.
P.S. The ", globals(), locals(), ['__dict__']" is there so that the
proper thing is done when you provide the code with a dotted module name.
--
http://mail.python.org/mailman/listinfo/python-list
That's really high-level: bits of beautiful python
I have a friend who has been programming in C for many years, and he is
a great fan of the language. However, he (and I) are about to start a
python course, and he has been asking me a lot of questions. He often
responds to my answers with "Urgh! Object-orientation!" and suchlike.
But today we were discussing the problem of running externally-provided
code (e.g. add-on modules). Neither of us knew how to do it in C, though
I suggested using DLLs. However, I quickly installed python on his
laptop and coded this:
exec "import %s as ext_mod" % raw_input("Module: ")
ext_mod.do()
And created to sample modules with do() functions to demonstrate. He was
impressed ("That's really high-level" were his words).
I was just thinking perhaps we should create some kind of collection of
bits of "impressive" code like this.
He also liked 99 Bottles in one line:
print '\n'.join(["%d bottles of beer on the wall." % i for i in
range(100,0,-1)])
--Max
--
http://mail.python.org/mailman/listinfo/python-list
