List with the ability to forget values. Kind of like a real-time sliding window.

memorySequence.py

class memorySequence(list):
    def __init__(self, lst, size=10): 
        super().__init__(lst)
        self._desired_size = size
    def append(self, item):
        if len(self) + 1 > self._desired_size:
            del self[0]
            return super().append(item)
        return super().append(item)
        
    
def testMemorySequence():    
    test = memorySequence([1,2,3,4,5,6,7,8,9,10], 10)
    print(test)
    test.append(11)
    print(test)

testMemorySequence()
"""
out: 
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

"""