can I do assumptions on an exception.errno in python?

Asked Feb 13 '15 at 18:41

Active Feb 13 '15 at 18:44

Viewed 46 times

I know, I could workaround it with a different type, but I hope the question could be interesting anyhow...

def try_me:
    try:
        do_something()
        return 0 # can it be confused with an error?
    except some_external_module.defined_exception as e:
        return e.errno
    except:
        return -1

In other words, is there any rule or convention that says err numbers shall be strictly positive?

edited Feb 13 '15 at 18:44

Anshul Goyal

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asked Feb 13 '15 at 18:41

user110954

1

Why would it matter either way? – Ignacio Vazquez-Abrams Feb 13 '15 at 18:43
2

There's a convention that 0 means "no error" and any non-zero integer (positive or negative) means "some error with this code occurred", but the convention in Python is to use _classes_ (objects) as exceptions, not integers and error tables. – Two-Bit Alchemist Feb 13 '15 at 18:47
thanks everybody, found something related here: http://stackoverflow.com/q/1591319/2787591 – user110954 Feb 13 '15 at 19:10

can I do assumptions on an exception.errno in python?

0 Answers0