Python equivalent to a C trick

George Yoshida ml at dynkin.com
Tue Aug 10 09:22:51 CEST 2004


Dan wrote:
> Is there a python equivalent of this trick in C?
> 
> Logic_Test ? True_Result : False_Result

Logic_Test and True_Result or False_Result
would be a Python counterpart.

> Example:
> printf( "you have %i %s", num_eggs, num_eggs > 1 ? "eggs" : "egg" );

So the exmaple is converted to:
print "you have %d %s"%(num_eggs, (num_eggs > 1) and "eggs" or "egg")

But be warned that if True_Result is evaluated as False(e.g. True_Result 
is an empty string), this doesn't work.

If you don't know what object is considered False in Python, check the 
following document.

* 2.3.1 Truth Value Testing
   http://docs.python.org/lib/truth.html

--
George



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