'in' operator

[Rainer Deyke]

"Walter Moreira" <walterm at cmat.edu.uy> wrote in message
news:mailman.982374799.24358.python-list at python.org...
> Why the following test raise an error?
>
>   >>> '' in 'yY'
>   Traceback (most recent call last):
>     File "<stdin>", line 1, in ?
>   TypeError: 'in <string>' requires character as left operand
>
> I would expect it to give 0, false.

I would expect it to give 1, since "" is a substring of "yY".  Given this
basic misunderstanding of what '"" in "yY"' is supposed to do, raising an
exception seems a reasonable compromise.  If you want to check if something
is either "y" or "Y", use 'resp in ("y", "Y")'.


--
Rainer Deyke (root at rainerdeyke.com)
Shareware computer games           -           http://rainerdeyke.com
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