auth.py登录返回403错误

[gozky]

INFO: 正在加载配置文件 ...
INFO: 提取XSRF 代码失败
INFO: 正在调用外部程序渲染验证码 ...
INFO: Command: xdg-open verify.gif &
请输入验证码: EPY3
ERROR: 网络异常

Traceback (most recent call last):
  File "auth.py", line 249, in <module>
    login()
  File "auth.py", line 228, in login
    result = upload_form(form_data)
  File "auth.py", line 146, in upload_form
    raise NetworkError(u"表单上传失败!")
__main__.NetworkError

我是根据配置文件登录，输入验证码后，这里一直返回403，另外我已经在auth.py中所有requests.get添加了headers.