old_contents: import os
  
  import requests
  
  
  class TTS:
      TTS_URL = "https://tts.voicetech.yandex.net/generate"
      MAX_CHARS = 2000
  
      def __init__(self, speaker, audio_format, key, lang="ru-RU", **kwargs):
          """Genarator of speech.
  
          Args:
              speaker: Speaker.
              audio_format: Audio file format.
              key: API‑key for Yandex speech kit.
              lang (optional): Language. Defaults to "ru-RU".
              emotion (optional): The color of the voice. Defaults to "normal".
              speed (optional): Speech tempo. Defaults to 1.0.
          """
          self.__params = {
              "speaker": speaker,
              "format": audio_format,
              "key": key,
              "lang": lang
          }
          self.__params.update(kwargs)
          self._data = None
  
      def generate(self, text):
          """Try to get the generated file.
  
          Args:
              text: The text that you want to generate.
          """
          if not text:
              raise Exception("No text to speak")
  
          if len(text) >= self.MAX_CHARS:
              raise Exception("Number of characters must be less than 2000")
  
          params = self.__params.copy()
          params["text"] = text
          self._data = requests.get(self.TTS_URL, params=params,
                                    stream=False).iter_content()
  
      def save(self, path="speech"):
          """Save data in file.
  
          Args:
              path (optional): A path to save file. Defaults to "speech".
              File extension is optional. Absolute path is allowed.
  
          Returns:
              The path to the saved file.
          """
  
          if self._data is None:
              raise Exception("There’s nothing to save")
  
          extension = "." + self.__params["format"]
          if os.path.splitext(path)[1] != extension:
              path += extension
  
          with open(path, "wb") as f:
              for d in self._data:
                  f.write(d)
  
          return path
  
new_contents: import os
  
  import requests
  
  
  class TTS:
      TTS_URL = "https://tts.voicetech.yandex.net/generate"
      MAX_CHARS = 2000
  
      def __init__(self, speaker, audio_format, key, lang="ru-RU", **kwargs):
          """Genarator of speech.
  
          Args:
              speaker: Speaker.
              audio_format: Audio file format.
              key: API-key for Yandex speech kit.
              lang (optional): Language. Defaults to "ru-RU".
              emotion (optional): The color of the voice. Defaults to "normal".
              speed (optional): Speech tempo. Defaults to 1.0.
          """
          self.__params = {
              "speaker": speaker,
              "format": audio_format,
              "key": key,
              "lang": lang
          }
          self.__params.update(kwargs)
          self._data = None
  
      def generate(self, text):
          """Try to get the generated file.
  
          Args:
              text: The text that you want to generate.
          """
          if not text:
              raise Exception("No text to speak")
  
          if len(text) >= self.MAX_CHARS:
              raise Exception("Number of characters must be less than 2000")
  
          params = self.__params.copy()
          params["text"] = text
          self._data = requests.get(self.TTS_URL, params=params,
                                    stream=False).iter_content()
  
      def save(self, path="speech"):
          """Save data in file.
  
          Args:
              path (optional): A path to save file. Defaults to "speech".
              File extension is optional. Absolute path is allowed.
  
          Returns:
              The path to the saved file.
          """
  
          if self._data is None:
              raise Exception("There's nothing to save")
  
          extension = "." + self.__params["format"]
          if os.path.splitext(path)[1] != extension:
              path += extension
  
          with open(path, "wb") as f:
              for d in self._data:
                  f.write(d)
  
          return path
  
subject: fix some chars