Python 我不明白

我是python的begginer，我不明白，我必须为这个命令做一个循环，我不会让他们在循环中工作，例如，当我告诉“写文件”代码工作时，然后执行代码的下一步，“读文件”，然后退出。但是现在只工作代码的一部分！ 非常感谢您抽出时间

import pyttsx3
engine = pyttsx3.init()
import speech_recognition as sr
import datetime
import webbrowser
import speech_recognition as sr
import pytesseract
from PIL import Image
from pytesseract import image_to_string
pytesseract.pytesseract.tesseract_cmd = 'C:\\Program Files\\Tesseract-OCR\\tesseract.exe'




def say(talk):
    engine.say(talk)
    engine.runAndWait()

say("Hello, Let's Start!")


record = sr.Recognizer()
try:

    with sr.Microphone(device_index=1) as source:
        print("Speak Now Please!........")
        audio = record.listen(source)
        result = record.recognize_google(audio)
        result = result.lower()
        print(result)


        if result == "write file":
            str_file = image_to_string(Image.open('Images/photo.png'))
            file = open("text_from.txt", "w")
            file.write(str_file)
            file.close()



        elif result == "read file":
            file = open("text_from.txt", "rt")
            for line in file:
                print(line)
            file.close()

        elif result == "exit":
            print("exit")
            



except sr.UnknownValueError:
    print("Talk again")

except sr.RequestError:
    print("Somthing going wrong")

---

我不知道这有多正确，但我找到了方法。也许这对某人有帮助

`import pyttsx3
engine = pyttsx3.init()
import speech_recognition as sr
import datetime
import webbrowser
import speech_recognition as sr
import pytesseract
from PIL import Image
from pytesseract import image_to_string
pytesseract.pytesseract.tesseract_cmd = 'C:\\Program Files\\Tesseract-OCR\\tesseract.exe'




def say(talk):
    engine.say(talk)
    engine.runAndWait()

say("Hello, Let's Start!")

result = False
record = sr.Recognizer()
try:
    with sr.Microphone(device_index=1) as source:
        print("SPEAK NOW ...................")
        audio = record.listen(source)
        result = record.recognize_google(audio)
        result = result.lower()
        print(result)


        while result == "write file":
            str_file = image_to_string(Image.open('Images/photo.png'))
            file = open("text_from.txt", "w")
            file.write(str_file)
            file.close()

            with sr.Microphone(device_index=1) as source:
                print("SPEAK NOW ...................")
                audio = record.listen(source)
                result = record.recognize_google(audio)
                result = result.lower()
                print(result)



        while result == "read file":
             file = open("text_from.txt", "rt")
             for line in file:
                 print(line)
             file.close()

             with sr.Microphone(device_index=1) as source:
                 print("SPEAK NOW ...................")
                 audio = record.listen(source)
                 result = record.recognize_google(audio)
                 result = result.lower()
                 print(result)


        while result == "exit":
            print("")
            break





except sr.UnknownValueError:
    print("Talk again")

except sr.RequestError:
    print("Somthing going wrong")
`