小编And*_*ane的帖子

我为什么要使用iter_content，特别是我对使用chunk_size的用途感到非常困惑，因为我尝试过使用它，并且在下载成功后似乎以各种方式保存了文件。

g = requests.get(url, stream=True)

with open('c:/users/andriken/desktop/tiger.jpg', 'wb') as sav:
    for chunk in g.iter_content(chunk_size=1000000):
        print (chunk)
        sav.write(chunk)

帮助我了解的用法，iter_content当您看到将1000000字节用作时chunk_size，会发生什么，确切的目的和结果是什么？

Internal Server Error: /admin/account/customuser/add/
Traceback (most recent call last):
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\contrib\admin\options.py", line 642, in get_form
    return modelform_factory(self.model, **defaults)
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\forms\models.py", line 543, in modelform_factory
    return type(form)(class_name, (form,), form_class_attrs)
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\forms\models.py", line 252, in __new__
    raise FieldError(message)
django.core.exceptions.FieldError: Unknown field(s) (password2, password1) specified for CustomUser

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\core\handlers\exception.py", line 39, in inner
    response = get_response(request)
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\core\handlers\base.py", line 249, in _legacy_get_response
    response = self._get_response(request)
  File "C:\Users\Andriken\Documents\Prac\djangoexample\bookmarks\mysite_env\lib\site-packages\django\core\handlers\base.py", line 187, …