How can I import unnecessary_math?

[Terry Reedy]

On 7/24/2014 1:58 PM, Chris Angelico wrote:
> On Fri, Jul 25, 2014 at 3:54 AM, fl <rxjwg98 at gmail.com> wrote:
>> It is also a question about the symbol '@' on that link.
>>
>> I don't find an explanation about '@' yet. Could you tell me?

The Python docs have an index. I STRONGLY recommend that everyone learn 
to use it. The index starts with a Symbols page.
https://docs.python.org/3/genindex-Symbols.html
The page may not be complete yet (I plan to recheck sometime), but it 
has an entry for '@'. If you do not want to search the page for '@', 
your browser find function (typically control-F) should find it for you. 
That entry takes you to
https://docs.python.org/3/reference/compound_stmts.html#index-20

>> @with_setup(my_setup_function, my_teardown_function)
>> def test_numbers_3_4():
>>      print 'test_numbers_3_4  <============================ actual test code'
>>      assert multiply(3,4) == 12
>>
>
> That's a function decorator. You can look them up on the web now that
> you know what they're called. :)

The Symbol index page was added to make knowing names unnecessary.

-- 
Terry Jan Reedy