[Newbie] error handling

[Fulvio]

***********************
Your mail has been scanned by InterScan MSS.
***********************


Hello there,

Simple question : how do I manage errors by the use "try/except" clause.
Example:
If I'd like to catch error coming from a function call that's using IMAP4 
class, which error may raise such class?
In other words I've doubts about which error object I should put after 
the "except" statement in order to trap the wanted error.

Is there, somehow, the way to list the errors from a class or function, prior 
digging into the source?

F