Feb 28, 2011 · Python’s assert statement is a debugging aid, not a mechanism for handling run-time errors. The goal of using assertions is to let developers find the likely root cause of a bug more quickly.

"assert" statements are removed when the compilation is optimized. So, yes, there are both performance and functional differences. The current code generator emits no code for an assert …

I share your annoyance that the python assert has unique syntax relative to all other python programming constructs, and this syntax has yet again changed from python2 to python3 and again …

El assert es una instruccion de Python que te permite definir condiciones que deban cumplirse siempre. En caso que la expresion booleana sea True assert no hace nada y en caso de False dispara una …

108 I have been learning Python and the raise function* and assert are really similar (what I realised is that both of them crash the app, unlike try - except) and I can't see a situation where you would use …

Sep 4, 2015 · O @CiganoMorrisonMendez me deu uma resposta numa pergunta anteriormente feita sobre Python. E como sou iniciante no Python ainda, fiquei sem saber pra que serve o assert que …

I have to reiterate @Ctrl-C's comment: pytest.mark.xfail DOES NOT assert that an exception was raised, it simply allows it to be raised. This is not what the title of the question asks.

Sep 5, 2012 · Note that Unicode strings which only contain ASCII will fail if checking types in this way, so you may want to do something like assert type(s) in (str, unicode) or assert isinstance(obj, …

Jan 23, 2018 · # script.py assert 0, "statement" raise AssertionError("error") Which produces different errors with and without the -O flag:

Assert isn't considered safe in production code; it's tempting to write assert x<5 and then be very surprised when x is more than 5 and the software continues running because Python was run with …