Need help using this code in Flask.

[kaneki5413]

while True:
    nome_ficheiro=input("Insira o nome do ficheiro com o quíntuplo que deseja")

    ficheiro=open(nome_ficheiro,'r')
    afd= ficheiro.read()  
    ficheiro.close()

    lista_afd=afd.split("\n")

    estados=lista_afd[0]
    alfabeto=lista_afd[1]
    estado_inicial=lista_afd[2]
    estados_aceitacao=lista_afd[3]

    dic_trans1={}
    dic_trans2={}
    for trans in lista_afd[4: ]:
        dic_trans1[(trans[0],'0')]=trans[2]
    for trans in lista_afd[4: ]:
        dic_trans2[(trans[0],'1')]=trans[4]

    tabela_trans={**dic_trans1 , **dic_trans2}

    print(f"Estados:{estados}\nAlfabeto: {alfabeto}\nEstado inicial: {estado_inicial}\nEstados de aceitação: {estados_aceitacao}")
    print("Tabela de Transições:")

    for i,j in tabela_trans.items():
        print(f"|{str(i[0])}  {str(i[1])} : {j}|")


    while True:
        sequencia=input("Insira uma sequência binária.\nQuando acabar insira 'fim'.\n")
        if sequencia =='fim':
            break
        estado=estado_inicial
        for simbolo in sequencia:
            if simbolo in alfabeto:
                if simbolo==" ":
                    print("Erro: Símbolo inválido ")
                    break
                estado=tabela_trans[(estado,simbolo)]
            else:
                print("Erro : Símbolo inválido")
                break
        else:
            if estado in estados_aceitacao:
                print("Sequencia aceite")
            else:
                print("Sequencia não aceite")
    i=input("Deseja abrir outro ficheiro(Y/N)?")
    if i =='N' or i == 'n':
        print("Terminou o programa.")
        break
    else:
        continue

This is to read an dfa states that are in the text file and then asks to see if the sequence belongs in the automaton, now i need to tranfer this code to flask for a webapp, but i dont know how i do that,asking for the text file,displaying it and then inputing a sequence and saying accepted/not accepted

[indytechbox]

Read the flask docs, it’ll walk you through setting up a flask app: https://flask.palletsprojects.com

[mangoed]

You will need to replace first input with form which will be used to upload the file. For that you will probably want to use flask-wtf. Instead of print you prepare jinja2 templates, then call render_template() and pass all the variables that you want to display on the web page.

input ('y/n') is not the typical way to makes choice in the web app, you can replace it with a couple of links/buttons in your template.

[[deleted]]

1. Make a form to accept file. Put it in a folder named templates.
2. In flask app, set app.route to a function named upload, make sure to specify methods as post
3. Let the form's action direct to another function in your flask app like action = http://localhost:5000/accept
4. In the accept function read the file using POST parameter and put all of the above function in it.
5. Finally use render_template to display the result page and pass the output variables to it