first of not None

[Serge Matveenko]

Hello, everybody!

Could someone help me with coding this thing?

I need to put in the var property of the first object from the list
that is not None. Somth like:

foo = first_of([any, beny, riki,]).name

Dont want to ugly if-cascade:

foo = any.name if name is not None else beny.name if beny is not None \
else riki.name if riki is not None


--
Serge Matveenko
mailto:serge@ma tveenko.ru

http://serge.matveenko.ru/

[Bruno Desthuilliers]

Re: first of not None

Serge Matveenko a écrit :

Hello, everybody!
>
Could someone help me with coding this thing?
>
I need to put in the var property of the first object from the list
that is not None. Somth like:
>
foo = first_of([any, beny, riki,]).name
>
Dont want to ugly if-cascade:
>
foo = any.name if name is not None else beny.name if beny is not None \
else riki.name if riki is not None
>

def not_none(obj):
return obj is not None

def first_of(seq, predicate=not_n one, default=None):
for obj in seq:
if predicate(obj):
return obj
else:
return default