speech recognition python pycharm

1  import speech_recognition as sr
2
3
4        def main():
5
6            r = sr.Recognizer()
7
8            with sr.Microphone() as source:
9                r.adjust_for_ambient_noise(source)
10
11                audio = r.listen(source)
12
13                try:
14
15                    print(r.recognize_google(audio))
16
17                except Exception as e:
18                    print("Error :  " + str(e))
19
20
21                with open("recorded.wav", "wb") as f:
22                    f.write(audio.get_wav_data())
23
24
25        if __name__ == "__main__":
26            main()

1how to conect microphone