[Python-Dev] string.find() again (was Re: timsort for jython)
Mon, 5 Aug 2002 16:03:09 -0400
On 5 Aug 2002 at 15:27, Tim Peters wrote:
> >> and I expect *everyone* here has been saved more
> >> than once by that
> >> '' in 'xyz'
> >> currently raises an exception.
Not that I can recall.
The exception, however, is a TypeError saying the left
operand isn't a character. It's not a
> I'd like to see a plausible use case for
> '' in str
> returning True, then.
Any code that currently does
str.find(x) >= 0
I tend to use:
pos = str.find(x)
if pos > -1:
because I'm normally interested in where.
If it's a pure membership test, I tend not
to use a string but a tuple:
if c in ('a', 'b', 'c'):
This is, at least partially, because "character"
is not an official Python type so I always expect
str1 in str2
to work when it only sometimes does.