code: def __init__(self, headers, body):
      self.headers = headers
      self.body = body
      self.headers_unread = True
      self.len = len(self.headers) + total_len(self.body)
  
imports: import contextlib
  import io
  import os
  from uuid import uuid4
  import requests
  from .._compat import fields
label_desc: Use image node_id 1 to create a new Part object from inherited base classes: object with example: obj = Part(headers, body)