main.py

import os
from google.cloud import texttospeech

os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "./key.json"

def synthesize_speech(text, output_file):
    client = texttospeech.TextToSpeechClient()

    input_text = texttospeech.SynthesisInput(text=text)

    voice = texttospeech.VoiceSelectionParams(
        language_code='en-US',
        ssml_gender=texttospeech.SsmlVoiceGender.FEMALE
    )

    audio_config = texttospeech.AudioConfig(
        audio_encoding=texttospeech.AudioEncoding.MP3
    )

    response = client.synthesize_speech(
        input=input_text, voice=voice, audio_config=audio_config
    )

    with open(output_file, 'wb') as out:
        out.write(response.audio_content)

# Example usage
text = "Hello, this is a test of the Google Cloud Text-to-Speech API."
output_file = "output.mp3"
synthesize_speech(text, output_file)