New submission from Пётр Дёмин:
Taken from http://stackoverflow.com/a/19287553/135079
When I consume all memory:
Python 2.7 (r27:82525, Jul 4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)]
on win32
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>>> a = {}
>>> for k in xrange(1000000): a['a' * k] = k
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
MemoryError
>>> len(a)
64036
If we'll take summary keys length:
>>> log(sum(xrange(64036)), 2)
30.93316861532543
we'll get near 32-bit integer overflow. After that done,
>>> a = {}
will free all 2 Gb of allocated memory (as shown in Task Manager), but
executing:
>>> for k in xrange(1000000): a[k] = k
Will cause:
MemoryError
And dictionary length something like:
>>> len(a)
87382
----------
components: Windows
messages: 199698
nosy: Пётр.Дёмин
priority: normal
severity: normal
status: open
title: GC does not really free up memory in console
type: resource usage
versions: Python 2.7
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19246>
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