someDict = {'foo': True}
if 'foo' in someDict and someDict['foo']:
print 'success'
Following code works fine. I'm just wondering if there is a better/shorter way of checking if key exists and its value is true.
someDict.get('foo')
This will return None if foo
is not in someDict
, otherwise it will return the value found. You can optionally pass a second argument which will be the value returned if it does not exist.
Nope. If you're doing this a lot, you may want to write a function to do it, though.
def ExistsTrue(d, name):
return name in d and bool(d[name])
# usage
ExistsTrue(someDict, 'foo')
I put the bool
cast in there so the function only returns True
or False
.
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