Initialisation du repository de Beta

venv/lib/python3.12/site-packages/sympy/combinatorics/rewritingsystem_fsm.py

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+class State:
+    '''
+    A representation of a state managed by a ``StateMachine``.
+
+    Attributes:
+        name (instance of FreeGroupElement or string) -- State name which is also assigned to the Machine.
+        transisitons (OrderedDict) -- Represents all the transitions of the state object.
+        state_type (string) -- Denotes the type (accept/start/dead) of the state.
+        rh_rule (instance of FreeGroupElement) -- right hand rule for dead state.
+        state_machine (instance of StateMachine object) -- The finite state machine that the state belongs to.
+    '''
+
+    def __init__(self, name, state_machine, state_type=None, rh_rule=None):
+        self.name = name
+        self.transitions = {}
+        self.state_machine = state_machine
+        self.state_type = state_type[0]
+        self.rh_rule = rh_rule
+
+    def add_transition(self, letter, state):
+        '''
+        Add a transition from the current state to a new state.
+
+        Keyword Arguments:
+            letter -- The alphabet element the current state reads to make the state transition.
+            state -- This will be an instance of the State object which represents a new state after in the transition after the alphabet is read.
+
+        '''
+        self.transitions[letter] = state
+
+class StateMachine:
+    '''
+    Representation of a finite state machine the manages the states and the transitions of the automaton.
+
+    Attributes:
+        states (dictionary) -- Collection of all registered `State` objects.
+        name (str) -- Name of the state machine.
+    '''
+
+    def __init__(self, name, automaton_alphabet):
+        self.name = name
+        self.automaton_alphabet = automaton_alphabet
+        self.states = {} # Contains all the states in the machine.
+        self.add_state('start', state_type='s')
+
+    def add_state(self, state_name, state_type=None, rh_rule=None):
+        '''
+        Instantiate a state object and stores it in the 'states' dictionary.
+
+        Arguments:
+            state_name (instance of FreeGroupElement or string) -- name of the new states.
+            state_type (string) -- Denotes the type (accept/start/dead) of the state added.
+            rh_rule (instance of FreeGroupElement) -- right hand rule for dead state.
+
+        '''
+        new_state = State(state_name, self, state_type, rh_rule)
+        self.states[state_name] = new_state
+
+    def __repr__(self):
+        return "%s" % (self.name)