String Identity Test
Hi: I am confused at string identity test: Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> a="test" >>> b="test" >>> a is b True >>> About identity, I think a is not b, but "a is b" returns True. Does that mean equality and identity is the same thing for strings? -- http://mail.python.org/mailman/listinfo/python-list
Re: String Identity Test
Hi: > Were you planning to write code that relied on id(x) being different > for different but identical strings x or do you just try to understand > what's going on? > Just try to understand what's going on. Thanks All. -- http://mail.python.org/mailman/listinfo/python-list
It looks like my mails to @python.org are all blocked
Hi: What's wrong with this? The python-anounce tells me that my message has a suspicious header? --Thomas -- http://mail.python.org/mailman/listinfo/python-list
Is there any Iterator type example?
Hi: Is there any example about how to use Iterator type? --Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there any Iterator type example?
Hi: Nice example too! But what I really want to know is how to use __iter()__ and next() in a class with an example. >> How about this one: >>.. -- http://mail.python.org/mailman/listinfo/python-list
Is there any Iterator type example?
Hi: Is there any example about how to use the Iterator type? --Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there any Iterator type example?
Hi: Thanks, it does help. Besides, I search the web and find several other examples, too. --Thomas - Original Message - From: "Fredrik Lundh" <[EMAIL PROTECTED]> To: Sent: Wednesday, November 16, 2005 4:02 PM Subject: Re: Is there any Iterator type example? > Thomas Moore wrote: > > > But what I really want to know is how to use __iter()__ and next() in a > > class with an example. > > here's a simple iterator class that iterators over itself once: > > class Iterator1: > def __init__(self, size=10): > self.count = 0 > self.size = size > def __iter__(self): > return self > def next(self): > count = self.count + 1 > if count >= self.size: > raise StopIteration > self.count = count > return count > > it = Iterator1() > print it > for i in it: > print i > for i in it: > print i > > if you run this, you'll see that only the first for-statement will actually > print anything. when you loop over the iterator again, it's already ex- > hausted. > > here's a more general variant, where the Iterable class can be iterated > over several times. to do this, its __iter__ method uses a separate helper > class to do the actual iteration: > > class Iterable2: > def __init__(self, size=10): > self.size = size > def __iter__(self): > return Iterator2(self) > > class Iterator2: > def __init__(self, target): > self.target = target > self.count = 0 > def __iter__(self): > return self > def next(self): > count = self.count + 1 > if count >= self.target.size: > raise StopIteration > self.count = count > return count > > it = Iterable2() > print it > for i in it: > print i > for i in it: > print i > > to get a better view of what happens when you run the code, try adding > print statements to the __iter__ and next methods. > > hope this helps! > > > > > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
Re: PyOpenGL
> Hey I'm a programmer looking to port some of my opengl ...although > limited into a python app I've made... I'd like to know where to find > any python/opengl source or a tutorial etc.. whatever I'd like to get a > series of points that represent a 3d slope presented to the user. Try wxPython. -- http://mail.python.org/mailman/listinfo/python-list
Re: UselessPython 2.0
I guess when useless, nothing cannot be done. - Original Message - From: <[EMAIL PROTECTED]> Newsgroups: comp.lang.python To: Sent: Monday, April 11, 2005 12:17 AM Subject: Re: UselessPython 2.0 > Nice idea for a site, but I suggest renaming it to something like > FunPython.com . My guess from reading the subject of your message was > that you hated Python! Besides, "fun" is shorter than "useless" and is > therefore more Pythonic :). > > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
A bug for unicode strings in Python 2.4?
Hi: Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> u=u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32' >>> u.split() [u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32'] >>> I think u should get split. --Frank -- http://mail.python.org/mailman/listinfo/python-list
A bug about unicode string in Python 2.4?
Hi: Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> u=u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32' >>> u.split() [u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32'] >>> I think u should get split. --Frank -- http://mail.python.org/mailman/listinfo/python-list
Re: A bug for unicode strings in Python 2.4?
> Thomas Moore: > > >>>>u=u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32' > >>>>u.split() > > > > [u'\u9019\u662f\u4e2d\u6587\u5b57\u4e32'] > > > > > > I think u should get split. > > Where do you think "這是中文字串" should be split and why? Isn't a unicode string character by character? -Frank -- http://mail.python.org/mailman/listinfo/python-list
Re: A bug for unicode strings in Python 2.4?
Hi: Thanks. I'll write my own split(). Frank -- http://mail.python.org/mailman/listinfo/python-list
Re: pyfcp
> http://www.python.org/pyfcp > It gets me to Error 404. -- http://mail.python.org/mailman/listinfo/python-list
