DynamicSpace.formula#

property DynamicSpace.formula#

The formula that defines parameter behavior for this space.

For parameterized spaces, the formula is a Python function that defines:

The parameter names (from function signature)
Optional logic for selecting base spaces for ItemSpace instances
Optional logic for setting references in ItemSpaces

The formula can return:

None (default): Use this space as base with no extra refs
dict: Specify 'base' space and/or 'refs' to add

Returns:: The formula object, or None if not parameterized
Return type:: Formula or None

Example

>>> # Simple parameterization
>>> space.formula = lambda x, y: None
>>> space.parameters
('x', 'y')

>>> # Advanced: select base space dynamically
>>> @mx.defcells
... def param_formula(product_type):
...     if product_type == 'A':
...         return {'base': BaseA}
...     else:
...         return {'base': BaseB}
>>> space.formula = param_formula