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VewixxPlayer YT
Asked: 2020-07-26 01:29:05 +0800 CST 2020-07-26 01:29:05 +0800 CST

Undefined Variable in Python

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I was trying to create a basic personal assistant, just to learn a bit more about the Python language (I'm 16 so I haven't started programming in classes yet).

And I've run into a weird error telling me that a variable is undefined inside a function, however I'm pretty sure I've declared it, and it should accept it.

Here is my code.

# Importar Librerías

import speech_recognition as sr # Reconocimiento de voz.

from gtts import gTTS # Conversión de texto a MP3.
import playsound # Lectura de MP3.

# Declarar Variables

username = ""
myName = "Vewi"

microphone = sr.Recognizer()

tts = ""
audioNumber = 0 # Ésta es la variable declarada.

lang = "es-ES"

# Función Presentarse

def ImVewi():
    audioText = ("Hola, soy " + myName + ". Mi trabajo será ayudarte. Para comunicarte conmigo, prueba a hablarle al micrófono. Ahora, te haré unas preguntas rápidas para poder mejorar tu experiencia.")
    TextToSpeech(audioText)
    ChangeUsername()

# Función Obtener Username

def ChangeUsername():
    global audioText
    with sr.Microphone() as source:
        audioText = ("¿Cómo te llamas?")
        TextToSpeech(audioText)
        print("a")
        audio = microphone.listen(source)
        print("Listened")
    try:
        username = microphone.recognize_google(audio, language=lang)
        audioText = ("Perfecto, ahora te llamaré " + username + ".")
        TextToSpeech(audioText)
    except sr.UnknownValueError:
        audioText = ("Disculpa, no te he entendido. ¿Podrías repetirlo?")
        TextToSpeech(audioText)
        ChangeUsername()
    except sr.RequestError:
        audioText = ("Disculpa, se ha producido un error. ¿Podrías repetirlo?")
        TextToSpeech(audioText)
        ChangeUsername()

# Transformar Texto a Audio

def TextToSpeech(audioText): # Ésta es la función con el error.
    audioNumber+=audioNumber # El error lo da en esta línea.
    tts = gTTS(text=audioText, lang = lang)
    tts.save("Audio/Speech"+str(audioNumber)+".mp3")
    playsound.playsound("Audio/Speech"+str(audioNumber)+".mp3", True)

# Llamar Funciones

ImVewi()

I should create an MP3 file called "Speech1.mp3" as it doesn't let me overwrite previously created files by default, so it can't just be "Speech.mp3" or a predefined name.

In the terminal I get this problem:

Undefined variable 'audioNumber' // Line 58, column 5

It would also help me if someone knew another way to do this, or to overwrite previously created MP3 files.

I have been trying for a long time and I have not been able to solve it. Thanks in advance.

python

1 Answers

  1. Best Answer

    You have to add globalto your variable inside the methodTextToSpeech()

    Example code:

    audioNumber = 3

def TextToSpeech(): # Ésta es la función con el error.

    global  audioNumber 
    audioNumber +=1
    print(audioNumber); # Imprimo 4


TextToSpeech() #Si vuelvo a llamar a la función pinto un 5

    The reason for this error is that inside TextToSpeech()Python it thinks your variable audioNumberis a local variable (and you don't have it declared locally). You have to tell it that it audioNumberis global so that it looks for it in a scope beyond the function

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