I particularly like it when, at work, other members of staff tell me my code isn’t written in the Python style and dismiss working, structured, debugged and documented code as somehow flawed.
I have twice had to demonstrate that doing image processing without using a linked list is generally faster and uses a lot less memory: which makes a big difference when you have a runtime greater than a few minutes.
I was forced to use Python at work after IDL licences were deemed too expensive and Matlab was clearly next on the chopping block. The libraries it has are great. The language itself, sucks.