Andrey Pavlov 97e72e40d0 Performance: leverage dict comprehension in PEP-0274 ... merged from Ifb5cb05b9cc2b8758d5a8e34f7792470a73d7c40 PEP-0274 introduced dict comprehensions to replace dict constructor with a sequence of length-2 sequences, these are benefits copied from [1]: The dictionary constructor approach has two distinct disadvantages from the proposed syntax though. First, it isn't as legible as a dict comprehension. Second, it forces the programmer to create an in-core list object first, which could be expensive. Nova dropped python 2.6 support, we can leverage this now. There is deep dive about PEP-0274[2] and basic tests about performance[3]. Note: This commit doesn't handle dict constructor with kwagrs. This commit also adds a hacking rule. [1]http://legacy.python.org/dev/peps/pep-0274/ [2]http://doughellmann.com/2012/11/12/the-performance-impact-of-using-dict-instead-of-in-cpython-2-7-2.html [3]http://paste.openstack.org/show/154798/ Change-Id: I1bc53e335b6c291da5c54f067f9fdfd5da6b2902		2015-04-02 16:07:58 +03:00
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__init__.py	Get rid of Nova DB access	2015-03-20 15:33:05 +03:00
api.py	Performance: leverage dict comprehension in PEP-0274	2015-04-02 16:07:58 +03:00