Modern programming languages for HEP 4，PyOrC++UsahteCpp perfC+十ython C++ pros and cons Adapted to large projects strongly typed,object oriented o widely used (and taught)with many available libraries Fast compiled (unlike Java or C#) allows to go close to hardware when needed ProCons UaeCase 6/65 S.Ponce-CERNModern programming languages for HEP 6 / 65 S. Ponce - CERN pyOrC++ UsableCpp perfC++ python3 Conclusion ProCons UseCase C ++pros and cons Adapted to large projects strongly typed, object oriented widely used (and taught) with many available libraries Fast compiled (unlike Java or C#) allows to go close to hardware when needed What we get the most powerful language the most complicated one the most error prone ?