My first program was in C64 BASIC, then Assembler, Amos, Pascal, C, C++, Java, Perl - but when I found Python I just stuck with it.
My first job was as a Python/Django developer in 2005.
Likes deleting lines, don't like introducing bugs.
Do you have confidence in your data without painful explicit checks? Use types in your code - attrs is a smart solution to make life easier.