This version is a bit better, since it follows the convention that '<<' should return self.
class TestValue(object):
"""Class to support assignment and test in single operation"""
def __init__(self,v=None):
self.value = v
"""Add support for quasi-assignment syntax using '<<' in place of
'='."""
def __lshift__(self,other):
self.value = other
return self
def __bool__(self):
return bool(self.value)
__nonzero__ = __bool__
-- Paul
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