policy_maker

`agents.policy_maker`

Policy maker agent module for the EcoWHEATaly model.

Defines the PolicyMaker agent that tracks Italian wheat market prices and manages the set of agri-environmental policies available to farms (eco-schemes and SRA interventions).

`PolicyMaker`

Bases: Agent

Repast4py agent representing the Italian policy maker.

The policy maker maintains a rolling history of Italian wheat prices and holds the DataFrame of available agri-environmental policies with their parameters (payments, input effects, administrative costs). It is shared across MPI ranks via the ghost agent mechanism.

Attributes:

Name	Type	Description
`TYPE`		Agent type identifier used by repast4py context.

`updateItalianPricesHystory(latestPrice)`

Append the latest wheat price and keep the last 12 entries.

Parameters:

Name	Type	Description	Default
`latestPrice`		Most recent Italian wheat equilibrium price.	required

`save()`

Serialize the agent state for MPI communication.

Returns:

Type	Description
`Tuple`	A tuple of `(uid, italianPricesHystory, policies)`
`Tuple`	used by `restore_agent` to reconstruct the agent.

`update(italian_ph, italian_policies)`

Update the ghost agent state without full reconstruction.

Called during MPI synchronization to refresh the ghost copy of this agent on remote ranks.

Parameters:

Name	Type	Description	Default
`italian_ph`		Updated list of Italian wheat prices.	required
`italian_policies`		Updated policies DataFrame.	required

`print_status()`

Print a short status message identifying this agent.