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From: Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de>
Newsgroups: comp.lang.python
Subject: Re: Implicit conversion to boolean in if and while statements
Date: Fri, 08 Feb 2013 12:11:20 +0100
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Xref: csiph.com comp.lang.python:38439

Am 08.02.2013 07:29 schrieb Rick Johnson:

> Consider this:
>
>      if connect("my:db") as db:
>          <do something>
>
> No need to make a call and then test for the validity of the call when you can do both simultaneously AND intuitively.

Would be great, but can be emulated with

def ifiter(x):
     if x: yield x

for db in ifiter(connect("my:db")):
     <do sth with db>

Is not very intuitive, however, but does its job.


Thomas