raise errors

[Ulrich Eckhardt]

daved170 wrote:
> I need help with exceptions raising.
> My goal is to print at the outer functions all the errors including
> the most inner one.
> 
> For example:
> 
> def foo1(self):
>    try:
>         foo2()
>    except ? :
>          print "outer Err at foo1" + ??
> 
> def foo2(self):
>    try:
>         error occured
>    except ? :
>          raise "inner Err at foo2"
> 
> 
> the ? remarks that I have no idea what to use.
> 
> I would like the print to be : outer Err at foo1 , inner Err at foo1

Take a look at the builtin debugger facility, i.e. 'import pdb'. There, you
have a traceback module which might already give you what you want.

One more advise though: Do not catch exceptions you don't handle! Make sure
they can pass through your code without hurting anything and then catch and
log them in a place where you actually can handle them. In particular,
don't wrap each and every tiny morsel of code into try/except handlers as
you would (have to) do if you were using return values.

Uli

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