[issue20642] Enhance deepcopy-ing for tuples

[Raymond Hettinger]

Raymond Hettinger added the comment:

This was a nice patch.
Thanks.

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nosy: +rhettinger

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[issue20642] Enhance deepcopy-ing for tuples

[Roundup Robot]

Roundup Robot added the comment:

New changeset 0df3004581fe by Benjamin Peterson in branch 'default':
improve idioms (closes #20642)
http://hg.python.org/cpython/rev/0df3004581fe

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nosy: +python-dev
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue20642] Enhance deepcopy-ing for tuples

[Claudiu.Popa]

Claudiu.Popa added the comment:

Ping? The change is clear, has the same semantics and its a little bit faster.

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[issue20642] Enhance deepcopy-ing for tuples

[Claudiu.Popa]

New submission from Claudiu.Popa:

Hello!

Here's a patch for improving the performance of tuple deepcopy-ing.

Without patch:

# ./python -m timeit -s "import copy; a=tuple(range(100))" -p 
"copy.deepcopy(a)"
10 loops, best of 3: 1.45 sec per loop

With patch:

# ./python -m timeit -s "import copy; a=tuple(range(100))" -p 
"copy.deepcopy(a)"
10 loops, best of 3: 1.32 sec per loop

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components: Library (Lib)
files: copy.patch
keywords: patch
messages: 211362
nosy: Claudiu.Popa, alexandre.vassalotti
priority: normal
severity: normal
status: open
title: Enhance deepcopy-ing for tuples
type: performance
versions: Python 3.5
Added file: http://bugs.python.org/file34108/copy.patch

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