"I still can’t figure out exactly which operations are expensive in Python. My C/C++ can’t help me much because it seems that things aren’t implemented like I’d've expected—like lists that aren’t lists, but array lists, leading to  for operations you would otherwise expect to be .<br />
"But a friend of mine—Olivier—showed me a simple, basic, yet rather effective tool to profile Python programs (I’m not sure if I should say script or not).<br />
<br />
<br />
"The tool, RunSnakeRun, inserts hooks in the Python interpreter to build a report of where time is spent, a bit à la Valgrind/Kcachegrind but much simpler, and to display the results using both tables and a rectangular tree-structured inclusion graph (a “SquareMap”)."<br />
<br />
Neat.

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