exercism/xpython — pull request #94 by sjakobi (2014-06-28 22:57:34+00:00)
Title: binary: Adopt functional style, add error handling

The Binary class and its __int__ method is replaced by the parse_binary
function as discussed in #79.
Instead of asking for a return value of 0 for invalid literals, the
tests now demand that a ValueError be raised.