VOICEVOXの音声合成をするpythonスクリプト（VOICEVOXを起動した状態で実行）

voicevox.py

# -*- coding: utf-8 -*-

import requests
import json

text = open('text.txt', encoding='utf-8').read()
#text = 'あいうえお'
query1 = requests.post('http://localhost:50021/audio_query', params={'speaker': '1', 'text': text})

#print(json.dumps(query1.json(), indent=2))

query2 = requests.post('http://localhost:50021/synthesis', headers={'content-type': 'application/json'},\
                       params={'speaker': '1'}, data=json.dumps(query1.json()))

with open('a.wav', mode='wb') as f:
    f.write(query2.content)

関連
https://github.com/VOICEVOX/voicevox_engine