old_contents: import os
  from io import BytesIO
  import datetime
  import json
  import requests
  
  
  def _serialize(obj):
      """JSON serializer for objects not serializable by default json code"""
  
      if isinstance(obj, (datetime.datetime, datetime.date)):
          serial = obj.isoformat()
          return serial
      raise TypeError("Type {} not serializable".format(type(obj)))
  
  
  class PushRequest(object):
      """A file-like object used to enqueue a call audio file to be processed by
      Plato AI.
  
      Args:
          metadata (:obj:`dictionary`): The metadata for the call.
          audio (:obj:`file-like object`): The raw audio bytes of the call.
          url (str, optional): The URL for the API.
      """
  
      def __init__(self, metadata, audio=None,
                   url='https://api.platoai.com:9000'):
  
          self.metadata = metadata
  
          self.url = url
  
          if not audio:
              audio = BytesIO()
          self.buffer = audio
  
      def __enter__(self):
          return self
  
      def write(self, chunk):
          return self.buffer.write(chunk)
  
      def push(self):
          """Enqueue a call to be processed by Plato AI.
  
          Returns:
              metadata (:obj:`dictionary`): The metadata for the uploaded call.
          """
          payload = json.dumps(self.metadata, default=_serialize)
          files = {
              'metadata': (None, payload, 'application/json'),
              'file': (self.metadata.get('identifier'), self.buffer,
                       'application/octet-stream')
          }
          url = '{}/enqueue'.format(self.url)
          r = requests.post(url, files=files).content
          return r.decode() if r else None
  
      def close(self):
          self.buffer.close()
  
      def __exit__(self, exc_type, exc_val, exc_tb):
          self.close()
  
new_contents: import os
  from io import BytesIO
  import datetime
  import json
  import requests
  
  
  def _serialize(obj):
      """JSON serializer for objects not serializable by default json code"""
  
      if isinstance(obj, (datetime.datetime, datetime.date)):
          serial = obj.isoformat()
          return serial
      raise TypeError("Type {} not serializable".format(type(obj)))
  
  
  class PushRequest(object):
      """A file-like object used to enqueue a call audio file to be processed by
      Plato AI.
  
      Args:
          metadata (:obj:`dictionary`): The metadata for the call.
          audio (:obj:`file-like object`): The raw audio bytes of the call.
          url (str, optional): The URL for the API.
      """
  
      def __init__(self, metadata, audio=None,
                   url='https://api.platoai.com:9000'):
  
          self.metadata = metadata
  
          self.url = url
  
          if not audio:
              audio = BytesIO()
          self.buffer = audio
  
      def __enter__(self):
          return self
  
      def read(self, *args, **kwargs):
          return self.buffer.read(*args, **kwargs)
  
      def write(self, chunk):
          return self.buffer.write(chunk)
  
      def push(self):
          """Enqueue a call to be processed by Plato AI.
  
          Returns:
              metadata (:obj:`dictionary`): The metadata for the uploaded call.
          """
          payload = json.dumps(self.metadata, default=_serialize)
          files = {
              'metadata': (None, payload, 'application/json'),
              'file': (self.metadata.get('identifier'), self.buffer,
                       'application/octet-stream')
          }
          url = '{}/enqueue'.format(self.url)
          r = requests.post(url, files=files).content
          return r.decode() if r else None
  
      def close(self):
          self.buffer.close()
  
      def __exit__(self, exc_type, exc_val, exc_tb):
          self.close()
  
subject: Add read() method to PushRequest