Laurens <3.14159265...@xs4all.nl> added the comment: Correction: the problem also exists in version 3.1. I created a benchmark program an ran it on my machine (iMac, snow leopard 10.6), with the following results:
------------------------------------------ 2.6.6 (r266:84292, Dec 30 2010, 09:20:14) [GCC 4.2.1 (Apple Inc. build 5664)] result: 0.0009 s. ------------------------------------------ 2.7.1 (r271:86832, Jan 13 2011, 07:38:03) [GCC 4.2.1 (Apple Inc. build 5664)] result: 0.0008 s. ------------------------------------------ 3.1.3 (r313:86882M, Nov 30 2010, 09:55:56) [GCC 4.0.1 (Apple Inc. build 5494)] result: 9.5682 s. ------------------------------------------ 3.2rc2 (r32rc2:88269, Jan 30 2011, 14:30:28) [GCC 4.2.1 (Apple Inc. build 5664)] result: 8.3531 s. Removing the line containing "tell" gives the following results: ------------------------------------------ 2.6.6 (r266:84292, Dec 30 2010, 09:20:14) [GCC 4.2.1 (Apple Inc. build 5664)] result: 0.0007 s. ------------------------------------------ 2.7.1 (r271:86832, Jan 13 2011, 07:38:03) [GCC 4.2.1 (Apple Inc. build 5664)] result: 0.0006 s. ------------------------------------------ 3.1.3 (r313:86882M, Nov 30 2010, 09:55:56) [GCC 4.0.1 (Apple Inc. build 5494)] result: 0.0093 s. ------------------------------------------ 3.2rc2 (r32rc2:88269, Jan 30 2011, 14:30:28) [GCC 4.2.1 (Apple Inc. build 5664)] result: 0.0007 s. (Apparently, reading a file became a lot faster from 3.1 to 3.2.) Conclusion: Execution of file.tell() makes the program about 10000 times slower. Remark: the file mdutch.txt is a dummy text file containing 1000 lines with one word on each line. ---------- Added file: http://bugs.python.org/file20674/tell v01.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue11114> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
