simultaneous assignment
Boris Borcic
bborcic at gmail.com
Tue May 2 15:20:48 EDT 2006
Steve R. Hastings wrote:
> So, don't test to see if something is equal to True or False:
>
> if 0 == False:
> pass # never executed; False and 0 do not directly compare
of course they do - ie isinstance(False,int) is True and False == 0
>
>
> You *could* do this, but I don't really recommend it:
>
> if bool(0) == False:
> pass # always executed
>
>
> Do this:
>
> if not 0:
> pass # always executed
>
> if 1:
> pass # always executed
>
>
> To convert a random value into a boolean value, you could use either
> "bool()" or you could use "not not":
>
> a = not not 0
> b = bool(0)
>
>
> "not not" will work on older versions of Python that didn't have an
> explicit boolean type; "not 0" would return 1 in that case. "bool()"
> will work in Python 2.2 and newer.
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