Re: [Sqlalchemy-tickets] [sqlalchemy] #2720: new C extensions for attribute accessing

[sqlalchemy <mi...@zz...>]

#2720: new C extensions for attribute accessing
-----------------------------------+---------------------------------------
      Reporter:  zzzeek            |      Owner:  zzzeek
          Type:  enhancement       |     Status:  new
      Priority:  medium            |  Milestone:  0.9.0
     Component:  cextensions       |   Severity:  very major - up to 2 days
    Resolution:                    |   Keywords:
Progress State:  not decided upon  |
-----------------------------------+---------------------------------------

Comment (by claudiofreire):

 Ok, timeit.

 This is the test:

 {{{
 >>> def test():
 ...    for _ in xrange(10):
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...        _ = rc.hash
 ...
 }}}

 Yeah, I did it on the console, and yeah, I made sure both runs contained
 the same number of rc.hash lines.

 With cinstrumented:

 {{{
 >>> timeit.timeit(test)
 156.2858281135559
 }}}

 Without cinstrumented:

 {{{
 >>> timeit.timeit(test)
 188.22997498512268
 }}}

 Unsurprising.

 PS: I did not include a query in the timeit function because I'm working
 with a remote DB ATM, and it'd overshadow attribute access. I don't have a
 local db handy.

-- 
Ticket URL: <http://www.sqlalchemy.org/trac/ticket/2720#comment:17>
sqlalchemy <http://www.sqlalchemy.org/>
The Database Toolkit for Python