On Wed, 17 Oct 2007 23:12:15 +0000, Paul Hankin wrote: > 'if x' doesn't test if x exists, it tests if x when cast to a bool is > True.
To be pedantic: Python doesn't have type casts. bool(x) doesn't cast x as a bool, it creates a brand new Boolean object from x. Also, the "if x" test looks at x.__nonzero__() first, and if that method doesn't exist, it looks to see if x.__len__() returns 0 or not. See http://docs.python.org/ref/customization.html -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
