Question: I'm trying to combine input from a user as part of a regex search. Since I only want the user-provided pattern to be searched in particular lines, I want to combine (i.e., concatenate) the pattern provided with a pattern. What's the best way to do this in python?

Here is my code, which at the moment, doesn't work because an addition operator doesn't seem to be supported by re:

```
import re

q1=re.compile(r'^Organism.*')
q2=re.compile(r'(moth)')
q3=re.compile(r'.*</td>')

s="Organism: moth </td>"

test=re.search(q1+q2+q3,s).group(1)

print "test", test

```

Answer: 
last is a function.
So a little change in the code might do the trick:

```
$(defaultOptions.removeButton).click(function(){
        $(defaultOptions.copyToLocation).children().last().remove();
    });

```

The idea is to get the children of the repository of items you got... then the last one... then remove...
You can try to explode each of the clonedNode's id in $(defaultOptions.copyToLocation), and grab it by the higher number, than you'll now the last one!

Or simply remove the last children of that, like

```
$(defaultOptions.copyToLocation).children().last().remove();

```