[Tutor] Try except really better than if?

[Karim]

Hello all,

I am using more and more try except statement. But I discussed with a 
very experienced C++ programmer.
And he told me that at least in C++ using too many try -catch statements 
are making the code slower. And it should
does the same for python (C implementation). My simple question: Is this 
true? And why using try-except is indeed encouraged
to code as a pythonista?

Regards
Karim