I realize that it is probably much too late in the game for this,
but...
I've always thought that returning None for get/get_by when no record
exists is less explicit than raising an exception. I really like
Django's idiom of having an Entity.DoesNotExist exception, such that I
could:
try:
instance = Entity.get(instance_id)
except Entity.DoesNotExist:
print "no record of an instance with id %s" % instance_id
else:
print instance
With sqlalchemy, I find myself always spelling:
instance = Entity.get(instance_id)
if not instance:
print "no record of an instance with id %s" % instance_id
else:
print instance
What do you think?
~jon
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