any chance regular expressions are cached?

[Terry Reedy]

<mh at pixar.com> wrote in message 
news:bu%Aj.5528$fX7.893 at nlpi061.nbdc.sbc.com...
| I've got a bit of code in a function like this:
|
|    s=re.sub(r'\n','\n'+spaces,s)
|    s=re.sub(r'^',spaces,s)
|    s=re.sub(r' *\n','\n',s)
|    s=re.sub(r' *$','',s)
|    s=re.sub(r'\n*$','',s)
|
| Is there any chance that these will be cached somewhere, and save
| me the trouble of having to declare some global re's if I don't
| want to have them recompiled on each function invocation?

The last time I looked, several versions ago, re did cache.
Don't know if still true.  Not part of spec, I don't think.

tjr