Various hints

Replace strings in many files simultaneously

For example to replace the Copyright statement in all py files of the current and all subdirectories (the "**/*py" pattern only works in zsh terminals):

perl -pi -w -e 's/ 2004-2005 / 2004-2006 /g;' **/*py

"(" or similar special characters need to be escaped with "\", for example:

perl -pi -w -e 's/\(C\) 2004-2005 /\(C\) 2004-2006 /g;' **/*py

Profiling python code

example:

import profile
profile.run( 'myMethod()', 'report.out' )

## Analyzing
import pstats
p = pstats.Stats('report.out')

## long steps and methods calling them
p.sort_stats('cumulative').print_stats(20)
p.print_callers(0.1)

## time consuming methods
p.sort_stats('time').print_stats(10)