[Tutor] Searching list items.

[John Fouhy]

On 18/10/06, Chris Hengge <pyro9219 at gmail.com> wrote:
> I remove those lines, but I was trying to use
> for line in contents:
>     result = re.search("something", line)
>     print result
>
> this printed out something like
>
> None
> None
> None
> hex memory address of goodness
> None
> None

If you don't need a regular expression, you are probably better off using 'in':

for line in contents:
    if 'something' in line:
        print line

Otherwise, re.search() and re.match() return either None or a match
object.  So, you can do this:

for line in contents:
    m = re.search('something', line)
    if m:
        print line[m.start():m.end()]

match objects become more powerful when you start using groups or
named groups in your regular expressions.  See the documentation for
more :-)

-- 
John.