Hi deostroll,

The recommended way is to call .fetch(count) on the query object, and
check if the returned list has any elements, or if you only want one
result, call .get() and check if it returns None.

If you want to use the query as an iterator (not recommended unless
it's the only option, since it is less efficient), you can use a
construct like the following:

for greeting in greetings:
  # Do some stuff with greeting
else:
  # Do stuff if there were no greetings

-Nick Johnson

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