dict.get(key, default) evaluates default even if key exists

[Ethan Furman]

On 12/16/20 3:08 AM, Peter J. Holzer wrote:
> On 2020-12-15 13:07:25 -0800, Ethan Furman wrote:
>> On 12/15/20 9:07 AM, Mark Polesky via Python-list wrote:
>>
>>> D = {'a':1}
>>>
>>> def get_default():
>>>       print('Nobody expects this')
>>>       return 0
>>>
>>> print(D.get('a', get_default()))
>>
>> Python has short-circuiting logical operations, so one way to get the behavior you're looking for is:
>>
>>      D.get('a') or get_default()
> 
> That will call get_default for any falsey value (0, "", an empty list ...),
> not just for missing values.
> 
> Which may or may not be what the OP wants.

Good point, thanks for clarifying.

--
~Ethan~