Get Item To Function Call Property

In LW Python, the "get item" operator is equal to the __getitem__ function call. More formally,

object[key] = __getitem__(object, key)

LW Python uses this property to first convert the "get item" operation to a __getitem__ function call before evaluating the expression.

For example, suppose that:

statement at line 2, tab 0 = numbers[1]

We claim that:

numbers[1] = __getitem__(numbers, 1)

Thus, we can conclude that:

statement at line 2, tab 0 = __getitem__(numbers, 1)

Try stepping through the simulator to see how LW Python retrieves the list element (item) at index 1:

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