[Python-ideas] Runtime assertion with no overhead when not active

[Serhiy Storchaka]

07.05.18 20:52, Guido van Rossum пише:
> He basically wants a macro so that
> 
>    runtime_assert(<expr>)
> 
> expands to
> 
>    if <controlling flag> and (<expr>):
>        raise AssertionError
> 
> In Lisp this would be easy. :-)

Python is not Lisp (still). But there is the MacroPy project. And at end 
you always can use an external tool for code generation. For example the 
old good cpp.