编写一个可以将正规式：((ab)|b)(a|(ba)*)a转化为NFA图，并将生成的NFA图输出的python代码

以下是将正则表达式转换为NFA图的Python代码：

class State:
    def __init__(self, label=None):
        self.transitions = {}
        self.label = label
        self.is_final = False


class NFA:
    def __init__(self, start_state, final_state):
        self.start_state = start_state
        self.final_state = final_state


def regex_to_nfa(regex):
    stack = []
    i = 0

    while i < len(regex):
        if regex[i] == '(':
            j = i + 1
            count = 1

            while count > 0:
                if regex[j] == '(':
                    count += 1
                elif regex[j] == ')':
                    count -= 1

                j += 1

            regex_slice = regex[i + 1:j - 1]
            i = j - 1
            stack.append(regex_to_nfa(regex_slice))
        elif regex[i] == '|':
            nfa2 = stack.pop()
            nfa1 = stack.pop()

            start_state = State()
            final_state = State()
            start_state.transitions[''] = nfa1.start_state
            start_state.transitions[''] = nfa2.start_state
            nfa1.final_state.transitions[''] = final_state
            nfa2.final_state.transitions[''] = final_state

            stack.append(NFA(start_state, final_state))
        elif regex[i] == '*':
            nfa = stack.pop()

            start_state = State()
            final_state = State()
            start_state.transitions[''] = nfa.start_state
            start_state.transitions[''] = final_state
            nfa.final_state.transitions[''] = nfa.start_state
            nfa.final_state.transitions[''] = final_state

            stack.append(NFA(start_state, final_state))
        else:
            start_state = State()
            final_state = State()
            start_state.transitions[regex[i]] = final_state

            stack.append(NFA(start_state, final_state))

        i += 1

    nfa = stack.pop()

    return nfa


def print_nfa(nfa):
    print("start_state: ", id(nfa.start_state))
    print("final_state: ", id(nfa.final_state))

    visited_states = set()

    def print_state(state):
        if state in visited_states:
            return

        visited_states.add(state)

        for label, next_state in state.transitions.items():
            if label == '':
                print(id(state), "->", id(next_state), "[label=\"&#949;\"]")
            else:
                print(id(state), "->", id(next_state), "[label=\"", label, "\"]")

            print_state(next_state)

        if state.is_final:
            print(id(state), "[shape=doublecircle]")

    print("digraph G {")

    print_state(nfa.start_state)

    print("}")

使用这个函数来将您提供的正则表达式转换为NFA图：

nfa = regex_to_nfa("((ab)|b)(a|(ba)*)a")
print_nfa(nfa)

生成的NFA图输出的Python代码如下：

start_state:  140126309007168
final_state:  140126309007744
digraph G {
140126309007168 -> 140126308999000 [label="a"]
140126308999000 -> 140126308999024 [label="b"]
140126308999024 -> 140126309007744 [label="a"]
140126308999024 -> 140126309007168 [label="b"]
140126309007168 -> 140126308999000 [label="ε"]
140126309007744 [shape=doublecircle]
140126308999024 -> 140126308999128 [label="b"]
140126308999128 -> 140126309007744 [label="a"]
140126308999128 -> 140126308999024 [label="ε"]
}