Short-circuit Logic
Cameron Simpson
cs at zip.com.au
Mon May 27 02:13:20 EDT 2013
On 27May2013 06:59, Vito De Tullio <vito.detullio at gmail.com> wrote:
| Cameron Simpson wrote:
| > if s is not None and len(s) > 0:
| > ... do something with the non-empty string `s` ...
| >
| > In this example, None is a sentinel value for "no valid string" and
| > calling "len(s)" would raise an exception because None doesn't have
| > a length.
|
| obviously in this case an `if s: ...` is more than sufficient :P
:P
My fault for picking too similar a test.
Cheers,
--
Cameron Simpson <cs at zip.com.au>
Death is life's way of telling you you've been fired. - R. Geis
More information about the Python-list
mailing list