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Is there a way to create a "slice view" of a sequence in Python 3 that behaves like a regular slice but does not create a copy of the sliced part of the sequence? When the original sequence is updated, the "slice view" should reflect the update.
>>> l = list(range(100))
>>> s = Slice(l, 1, 50, 3) # Should behave like l[1:50:3]
>>> s[1]
4
>>> l[4] = 'foo'
>>> s[1] # Should reflect the updated value
'foo'
I can write my own Slice class that does this but I wanted to find out if there was a built-in way.
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The short answer. Slicing lists does not generate copies of the objects in the list; it just copies the references to them. That is the answer to the question as asked.
The slice() method is a copying method. It does not alter this but instead returns a shallow copy that contains some of the same elements as the ones from the original array.
slice() , Array. from() , Object. assign() , and Object. create() ) do not create deep copies (instead, they create shallow copies).
The slice() method can be used to create a copy of an array or return a portion of an array. It is important to note that the slice() method does not alter the original array but instead creates a shallow copy.
Use islice from itertools library
EDIT:
I see where I misunderstood the question. Well, there is no such thing. If you want to create your class, you'll have to:
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