State Machine for Driving

MediumPython

Problem

Describe a time you implemented a state machine for driving behavior in a robotics system.

Implement a deterministic version that processes an event sequence and returns the state after each event. Start in IDLE and use the specified transitions; unrecognized events leave the state unchanged.

Input/output contract: events is a list of strings, and the function returns a list beginning with the initial state and containing one state per event.

Constraints

0 <= len(events) <= 10^5
Each event is a string
Valid events are start, obstacle, clear, stop, emergency, and reset
Unrecognized events must leave the current state unchanged

Function Signature

def driving_states(events):

CodePython 3

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