Comments on: strange thing in python http://ankurs.com/2010/02/strange-thing-in-python/ 01110100110101010101011101100010 Fri, 10 Feb 2012 10:18:00 +0000 hourly 1 http://wordpress.org/?v=3.3 By: Noufal Ibrahim http://ankurs.com/2010/02/strange-thing-in-python/comment-page-1/#comment-1091 Noufal Ibrahim Mon, 12 Jul 2010 10:37:27 +0000 http://ankurs.com/?p=599#comment-1091 When you call a constructor, a function call should take place. This introduces an overhead which is not there when you use a literal. So, your observation that the literal is faster is correct and here's some data to back it. noufal@sanitarium% python /usr/lib/python2.6/timeit.py "x={}" 10000000 loops, best of 3: 0.0477 usec per loop noufal@sanitarium% python /usr/lib/python2.6/timeit.py "x=dict()" 10000000 loops, best of 3: 0.179 usec per loop When you call a constructor, a function call should take place. This introduces an overhead which is not there when you use a literal. So, your observation that the literal is faster is correct and here’s some data to back it.

noufal@sanitarium% python /usr/lib/python2.6/timeit.py “x={}”
10000000 loops, best of 3: 0.0477 usec per loop
noufal@sanitarium% python /usr/lib/python2.6/timeit.py “x=dict()”
10000000 loops, best of 3: 0.179 usec per loop

]]> By: Ankur Shrivastava http://ankurs.com/2010/02/strange-thing-in-python/comment-page-1/#comment-1021 Ankur Shrivastava Thu, 11 Mar 2010 18:42:54 +0000 http://ankurs.com/?p=599#comment-1021 the problem is using {} is more efficient then using the constructor dict(), see the number of lines disassembled 15 for function with {} and 21 for function with dict() the problem is using {} is more efficient then using the constructor dict(), see the number of lines disassembled 15 for function with {} and 21 for function with dict()

]]> By: Shubhendra http://ankurs.com/2010/02/strange-thing-in-python/comment-page-1/#comment-999 Shubhendra Tue, 16 Feb 2010 04:49:29 +0000 http://ankurs.com/?p=599#comment-999 I am not able to figure out what difference you are seeing over here please elaborate a little more? I am not able to figure out what difference you are seeing over here please elaborate a little more?

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