def add_algorithm_input(self, name, low, high):
""" Adds a new input trait for the algorithm
"""
if len(name) == 0 or low >= high:
return
self.algorithm_inputs.append((name, Range(low, high)))
value = (low+high)/2
# Create the new instance and add the input traits to it
algorithm = Algorithm()
for input in self.algorithm_inputs:
algorithm.add_trait(*input)
# Set a default value for the new trait
setattr(algorithm, name, value)
# Copy values from the old instance
old = self.algorithm
traits = set(old.trait_names()) - {'trait_added', 'trait_modified'}
for trait in traits:
setattr(algorithm, trait, getattr(old, trait))
self.algorithm = algorithm
