simple string backspace question

Dustan DustanGroups at gmail.com
Tue Jul 31 14:33:03 CEST 2007


On Jul 31, 7:17 am, John Machin <sjmac... at lexicon.net> wrote:
> On Jul 31, 8:01 pm, vedrandeko... at v-programs.com wrote:
>
>
>
> > On 31 srp, 11:44, vedrandeko... at v-programs.com wrote:
>
> > > Hello,
>
> > > I have one simple string, backspace character question.Here is my
> > > example:
>
> > > >>> text="Hello\bworld"
> > > >>> print text
>
> > > "HelloBSworld"
>
> > > Should this character "\b" (backspace) in this text return this:
> > > "Helloworld"?
>
> > > Regards,
> > > Vedran
>
> > Hi,
>
> > If you mean on operating system then unfortunately Windows XP.
>
> Point (1) Works on Windows XP for me:
>
> C:\junk>ver
>
> Microsoft Windows XP [Version 5.1.2600]
>
> C:\junk>\python25\python
> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
> (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
>
> >>> text = "Hello\bworld"
> >>> print text
> Hellworld
>
> or, for mild amusement:
>
> >>> import sys, time
> >>> for x in xrange(100):
>
> ...     sys.stdout.write("|/-\\"[x & 3] + "\b")
> ...     time.sleep(0.1)
> ...

Now try it on IDLE.

>
>
> Point (2): Backspace??? YAGNI --- backspace hasn't been much use for
> anything (except when typing text) since the days when in order to get
> a bold letter (say X) on a character impact printer, one would
> transmit X\bX\bX ...




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