Don't know *what* I wasn't thinking :-).
Bill
> On 8/26/05, Bill Janssen <[EMAIL PROTECTED]> wrote:
> > Doubt it. The problem with returning None is that it tests as False,
> > but so does 0, which is a valid string index position. The reason
> > string.find() returns -1 is probably to allow a test:
> >
> > if line.find("\f"):
> > ... do something
>
> This has a bug; it is equivalent to "if not line.startswith("\f"):".
>
> This mistake (which I have made more than once myself and have seen
> many times in code by others) is one of the main reasons to want to
> get rid of this style of return value.
>
> > Might add a boolean "str.contains()" to cover this test case.
>
> We already got that: "\f" in line.
_______________________________________________
Python-Dev mailing list
Python-Dev@python.org
http://mail.python.org/mailman/listinfo/python-dev
Unsubscribe:
http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
