def value(self):
"""float : The value from the last time the problem was solved
(or None if not solved).
"""
if self._value is None:
return None
else:
return scalar_value(self._value)
def value(self):
"""The value of the objective expression.
"""
v = self.args[0].value
if v is None:
return None
else:
return scalar_value(v)
