@property
  def text(self):
    """Content of the response, in unicode.

    If Response.encoding is None, encoding will be guessed using
    ``chardet``.

    The encoding of the response content is determined based solely on HTTP
    headers, following RFC 2616 to the letter. If you can take advantage of
    non-HTTP knowledge to make a better guess at the encoding, you should
    set ``r.encoding`` appropriately before accessing this property.
    """

  #content的完整代码就不贴了。
  @property
  def content(self):
    """Content of the response, in bytes."""

# 例如下载并保存一张图片

import requests

jpg_url = 'http://img2.niutuku.com/1312/0804/0804-niutuku.com-27840.jpg'

content = requests.get(jpg_url).content

with open('demo.jpg', 'wb') as fp:
  fp.write(content)