Actually, Python does have that :) It's called __slots

python slot   Dan python slot machine

The reason for this is the way Python handles dict s internally When not specifying __slots__ , Python uses a dictionary by default to store

NOTE : From the output we got the error as “Data object has no attribute 'c' ”, because we have not added 'c' in the __slots__ , so python will slotSignature has the same form as a signalSignature except that the name is of a Qt slot A slot may not have more arguments than the signal that is

class slot Python's __slots__ is a simple yet powerful feature that is often overlooked and misunderstood by many By default, Python stores instance This operator is supported by many Python containers to test whether the given value is in the container The following are some examples of how x in y will