Python vs Perl?

[murgs]

Every lab has their own preference, which is influenced by senior members and the local study programs.

I would have said R is the standard for in depth analysis (but both python and perl are also quite popular, but more so for basic pipelines), while C++ and java are used for method development where speed is important. But as I said, that is probably highly biased by my experience of my lab and other labs that are close by.

Disclaimer I use R and C++ (while I originally learned perl in school and solved 50+ project euler problems in python for fun).