Escapeism

Matthew Warren Matthew.Warren at Digica.com
Tue Oct 3 17:07:06 CEST 2006


 

> -----Original Message-----
> From: 
> python-list-bounces+matthew.warren=digica.com at python.org 
> [mailto:python-list-bounces+matthew.warren=digica.com at python.o
> rg] On Behalf Of Kay Schluehr
> Sent: 30 September 2006 18:02
> To: python-list at python.org
> Subject: Re: Escapeism
> 
> Sybren Stuvel wrote:
> > Kay Schluehr enlightened us with:
> > > Usually I struggle a short while with \ and either 
> succeed or give up.
> > > Today I'm in a different mood and don't give up. So here is my
> > > question:
> > >
> > > You have an unknown character string c such as '\n' , 
> '\a' , '\7' etc.
> > >
> > > How do you echo them using print?
> > >
> > > print_str( c ) prints representation '\a' to stdout for c = '\a'
> > > print_str( c ) prints representation '\n' for c = '\n'
> > > ...
> > >
> > > It is required that not a beep or a linebreak shall be printed.
> >
> > try "print repr(c)".
> 
> This yields the hexadecimal representation of the ASCII character and
> does not simply echo the keystrokes '\' and 'a' for '\a' ignoring the
> escape semantics. One way to achieve this naturally is by prefixing
> '\a' with r where r'\a' indicates a "raw" string. But unfortunately
> "rawrification" applies only to string literals and not to string
> objects ( such as c ). I consider creating a table consisting of pairs
> {'\0': r'\0','\1': r'\1',...}  i.e. a handcrafted mapping but maybe
> I've overlooked some simple function or trick that does the same for
> me.
> 
> Kay
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 
> 
>  
> 


This email is confidential and may be privileged. If you are not the intended recipient please notify the sender immediately and delete the email from your computer. 

You should not copy the email, use it for any purpose or disclose its contents to any other person.
Please note that any views or opinions presented in this email may be personal to the author and do not necessarily represent the views or opinions of Digica.
It is the responsibility of the recipient to check this email for the presence of viruses. Digica accepts no liability for any damage caused by any virus transmitted by this email.

UK: Phoenix House, Colliers Way, Nottingham, NG8 6AT UK
Reception Tel: + 44 (0) 115 977 1177
Support Centre: 0845 607 7070
Fax: + 44 (0) 115 977 7000
http://www.digica.com

SOUTH AFRICA: Building 3, Parc du Cap, Mispel Road, Bellville, 7535, South Africa
Tel: + 27 (0) 21 957 4900
Fax: + 27 (0) 21 948 3135
http://www.digica.com



More information about the Python-list mailing list