?: in Python

[Kent Johnson]

Andy Leszczynski wrote:
> How can do elegantly in Python:
> 
> if condition:
>    a=1
> else:
>    a=2
> 
> like in C:
> 
> a=condition?1:2
> 

a = condition and A or B
is concise but will fail if A can evaluate as false, e.g.
a = condition and None or 2 # won't do what you want

I tend to use 'condition and A or B' if I'm sure A won't be false, otherwise just write 
out the if / else.

Kent