Question

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.

Answer 1

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.