自定义django-admin命令 - AttributeError：'Command'对象没有属性'stdout' [英] custom django-admin commands - AttributeError: 'Command' object has no attribute 'stdout'

问题描述

按照编写自定义django-admin命令的示例 here ，我创建了以下自定义命令：

Following the example of writing a custom django-admin command here, I've created the following custom command:

from django.core.management.base import BaseCommand, CommandError

class Command(BaseCommand):
    args = ''
    help = 'Test command'

    def handle(self, *args, **options):
        self.stdout.write("Hello World!")

令人惊讶的是，我收到以下堆栈跟踪：

Surprisingly, I receive the following stack trace:

Traceback (most recent call last):
  File "D:\My Documents\Dev\MyProject\svn\trunk\dj_project\manage.py", line 11, in <module>
    execute_manager(settings)
  File "C:\Python26\lib\site-packages\django\core\management\__init__.py", line 438, in execute_manager
    utility.execute()
  File "C:\Python26\lib\site-packages\django\core\management\__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python26\lib\site-packages\django\core\management\base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "C:\Python26\lib\site-packages\django\core\management\base.py", line 218, in execute
    output = self.handle(*args, **options)
  File "D:\My Documents\Dev\MyProject\svn\trunk\dj_project\..\dj_project\dj_app\management\commands\mytest.py", line 8, in handle
    self.stdout.write("Hello World!")
AttributeError: 'Command' object has no attribute 'stdout'

怎么来的？这是一个非常基本的自定义命令，据我所知，符合示例。

How come? This is a very basic custom command that as far as I understand conforms to the example.

我正在使用django 1.2.1

I'm using django 1.2.1

推荐答案

看起来像映射到 self.stdout 是Django的中继版本的一个非常新的变化，承诺在可能。如果您正在运行1.2版本或更早版本，这将无法正常运行，您应该使用以前的文档。

It looks like the mapping to self.stdout is a very new change in Django's trunk version, committed in May. If you're running the 1.2 release or earlier, this won't work - and you should be using the earlier documentation.

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