How can I tell if variable is defined

[Dave Angel]

Brown, Rodrick wrote:
> How could I do the following check in Python
>
> In Perl I could do something like if ((defined($a)) { ... }
>
> I tried if var is not None:
> However this doesn't seem to work as described.
>
> Thanks.
>
>
>   
try/except

Or look up the attribute in the appropriate dictionary(ies).


def test():
    newvar = 42
    if "newvar" in locals():
        print "yes"

DaveA