[New-bugs-announce] [issue26675] Appending to a large list flushes old entries

Swaprava Nath report at bugs.python.org
Wed Mar 30 22:49:57 EDT 2016

New submission from Swaprava Nath:

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?

files: knapsack.py
messages: 262683
nosy: Swaprava Nath
priority: normal
severity: normal
status: open
title: Appending to a large list flushes old entries
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file42330/knapsack.py

Python tracker <report at bugs.python.org>

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