Every programmer worth their salt must learn to use power tools, and also train to work beyond the beginner-intermediate levels, that has now become the permanent situation in our line of work.

Nobody should be spending a day writing Python to do work that can be done using a vim macro in like 5 mins. Or spend a year doing in Python what can be done in a week in Perl.

>> $\=$/;for(@ARGV){open F,$_;while(<F>){print if/$_/}}

There are lots Perl one-liner patterns, once you learn to write them. You are basically saving yourself writing many dozen man-hours of Python/Java coding work.

I remember telling my manager during the Perl days. A 10 year Java experience guy looks great, but thats basically a junior Perl dev with 6 months experience.

There is nothing to feel great about wasting effort and more importantly time.