[docs] The examples in http://docs.python.org/3.3/library/unittest.mock-examples.html for mock builtin functions (such as 'open') does not work.

[Berker Peksağ]

On Wed, Feb 27, 2013 at 9:31 PM, 张小潘 <zhangxiaopan at gmail.com> wrote:
> Hi there,
>
> http://docs.python.org/3.3/library/unittest.mock-examples.html
> gives the following example for using unittest.mock module to mock builtin
> functions:
>
>
>>>> mock = MagicMock(return_value = sentinel.file_handle)
>>>> with patch('__builtin__.open', mock):
> ...     handle = open('filename', 'r')
> ...
>>>> mock.assert_called_with('filename', 'r')
>>>> assert handle == sentinel.file_handle, "incorrect file handle returned"
>
>
> By running this example with Python3.3, I received the following error:
>
> ImportError: No module named '__builtin__'
>
> Changing the module name to '__builtins__' does NOT work either.
>
> Changing the module name to 'builtins' DOES work.
>
> Could we fix the document? and could somebody here to explain the difference
> between these names for builtins module?

Thanks for your report. I've opened http://bugs.python.org/issue17539 to fix it.

--Berker