On 1/6/2010 1:20 PM, Lie Ryan wrote:
Python decided that the default behavior should be raising exception and sentinel have to use the dict.get() method. Simple and clear. The other possible behavior (i.e. slicing returns a sentinel while dict.get() raises an exception) is arguably just as simple and just as clear; but python doesn't do it that way. Why? Because it's part of what makes python Python[1].
The altermatives are not quite equivalent. The current way lets one specify the sentinel whereas the alternative does not. There is hardly any reason to specify the exception.
tjr -- http://mail.python.org/mailman/listinfo/python-list
