Re: where are isinstance types documented?

On 9/26/06, Simon Brunning <simon@xxxxxxxxxxxxxxxxxx> wrote:
On 26 Sep 2006 02:59:07 -0700, codefire <tony.bedford@xxxxxxxxx> wrote:
> For example isinstance(a, int) works fine but isinstance(s, string)
> doesn't - because 'string is not known'.

In this case, you want "str" rather than "string".

A couple of points to consider:

Firstly, do you really need to use isinstance() at all? It's often not
necessary. Consider a duck-typing approach instead - i.e. to just try
using the object as a string, and to deal with exceptions arising from
the possibility that it isn't. This approach would allow string-like
objects as well as "real" strings.

Secondly, if you *really* want to use isinstance(), "basestring" is
the super-type of both "str" and "unicode", so it's more likely to be
what you want.

--
Cheers,
Simon B,
simon@xxxxxxxxxxxxxxxxxx
.

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