98875345c2
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. Magnum does not support python 2.6, we can leverage this. 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/480757/ Change-Id: I61992fa428d6760449afe3754b02506336e8b421 |
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