Re: [Tutor] Operating in Place
On Wed, 29 Sep 2010 06:12:20 am Shashwat Anand wrote: > On Wed, Sep 29, 2010 at 1:33 AM, Corey Richardson wrote: > > Hello tutors. > > > > I hate doing this: > >string = string.lower() > > > > Is there a way to do it without the "string =" part? Thanks. > > 1. string is a module which is deprecated. You should probably use > str or s in your example. Actually, in this case Corey is not using the string module, but is using string as the name of a variable. -- Steven D'Aprano ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Operating in Place
On Wed, 29 Sep 2010 06:03:21 am Corey Richardson wrote: > Hello tutors. > > I hate doing this: > string = string.lower() > > Is there a way to do it without the "string =" part? Thanks. No, strings are immutable. Once they're created, they cannot be changed. This is no different from: x = 42 x = x/2 # or x /= 2 if you prefer instead of: x = 42 x/2 As an alternative you could look at the UserString module, and the MutableString class it includes, but MutableString has some serious limitations and is not really meant for serious work. But it might do the job you want. -- Steven D'Aprano ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Operating in Place
On Tue, Sep 28, 2010 at 3:03 PM, Corey Richardson wrote: > Hello tutors. > > I hate doing this: > string = string.lower() > > Is there a way to do it without the "string =" part? Thanks. > I suppose the best answer is it depends on what you are doing with string after you do string.lower() you can use the string.lower() directly in IF statements and such without worry a = "TEST" if a.lower() == "test": do stuff works for me.even on the new 3.1 ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Operating in Place
On 28-Sep-10 13:03, Corey Richardson wrote: I hate doing this: string = string.lower() Is there a way to do it without the "string =" part? Thanks. Depends on the class. In this specific case, string objects are immutable (for some good reasons which are beyond the immediate point), so once created, they can't be changed. They can, of course, be used to create new strings, which is what string.lower() is doing. And that new string is then given the name "string" again, replacing the old string object (which may still have other names referencing it elsewhere). If you were wanting to modify a mutable object in-place, Python would be happy to oblige. But not strings. Sorry :) ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Operating in Place
On Tue, Sep 28, 2010 at 3:03 PM, Corey Richardson wrote: > Hello tutors. > > I hate doing this: >string = string.lower() > > Is there a way to do it without the "string =" part? Thanks. > Not with a string. I suppose if you had your own class you could create something, but you'd be doing the same thing behind the scenes. Is there any particular reason why you don't like doing it? It's explicit and easy to understand - saying that you want the lowercase version of the string, but you don't care about the original string. At least that's my take on it, Wayne ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Operating in Place
On Wed, Sep 29, 2010 at 1:33 AM, Corey Richardson wrote: > Hello tutors. > > I hate doing this: >string = string.lower() > > Is there a way to do it without the "string =" part? Thanks. > 1. string is a module which is deprecated. You should probably use str or s in your example. 2. strings in python are immutable. If you need to change something, you need to create a new string. > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > -- ~l0nwlf ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Operating in Place
Hello tutors. I hate doing this: string = string.lower() Is there a way to do it without the "string =" part? Thanks. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
