Why the code does not accept what I say how to fix it?

Question

Python

import speech_recognition

sr = speech_recognition.Recognizer()
sr.pause_threshold = 0.5

with speech_recognition.Microphone() as mic:
    audio = sr.listen(source=mic)
    query = sr.recognize_google(audio_data=audio, language='ru-RU').lower()

print (query)