I'm storing several variables in a list after a computation in a for loop. I'm bundling the variables in a tuple and appending this tuple to a list. So, the structure should be:

iter 1: list = [tuple1]
iter 2: list = [tuple1, tuple2]
iter 3: list = [tuple1, tuple2, tuple3] etc.

and the tuple has dissimilar objects. Surprisingly, I see that the list grows until a point and then suddenly all old entries are flushed out and new tuple_n is the only entry

iter n: list = [tuple_n]

Is this a bug? Or is there a cap on the size of the list?