[Tutor] Checking for Control Characters

[Sheila King]

On Mon, 8 Apr 2002 00:13:57 -0500, dman wrote:
        <do stuff for bad data entry>
>
> I recommend using a regex instead of a linear search.  It will 
likely
> be faster, if the number of taboo characters increases or if you 
check
> multiple passwords with the same python process (persistent cgi?).

Actually, I did have a script I worked with a short while ago, where 
we had a version that used string methods, and then we changed it in 
the next version to use regex. And we found the regex to be slower.

In Python, regex is not as fast as in Perl (I believe). If you have 
some fairly comlicated searches to do, or a lot of searches, then it 
may be worth the overhead, and regex may be more efficient. But for 
something as simple as what I am doing, I believe the simple string 
methods will be quicker.

I am not doing persistent cgi, nor do I expect the number of taboo 
characters to increase, nor will I be checking multiple passwords. 
Otherwise, I would look into the regex, as you suggest.

Thanks,

-- 
Sheila King
http://www.thinkspot.net/sheila/