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Fri Mar 11 13:53:42 CET 2011 · https://mail.python.org/pipermail/python-dev/2011-March/109087.html

On 11/03/2011 4.45, Nick Coghlan wrote:
> On Thu, Mar 10, 2011 at 4:36 PM, ezio.melotti
> <python-checkins at python.org>  wrote:
>> http://hg.python.org/cpython/rev/9adc4792db9a
>> changeset:   68356:9adc4792db9a
>> branch:      2.7
>> user:        Ezio Melotti<ezio.melotti at gmail.com>
>> date:        Thu Mar 10 23:35:39 2011 +0200
>> summary:
>>   Use simpler assert in basic example.
> Please don't. Now the new methods are available, using assertTrue() on
> supported expressions is actively throwing away data, and the docs
> shouldn't recommend it *anywhere*.

I agree with you, but Raymond wants to keep the example as simple as 
possible and asked me to change it back.

> If using assertIn() at this point in the docs is a genuine problem,
> find an alternative test example that isn't better written using one
> of the more specific methods.

That would be best.  Can you come up with a different example that only 
uses assertEqual/assertTrue/assertRaises?

Best Regards,
Ezio Melotti

> Cheers,
> Nick.
>
>> files:
>>   Doc/library/unittest.rst
>>
>> diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
>> --- a/Doc/library/unittest.rst
>> +++ b/Doc/library/unittest.rst
>> @@ -130,13 +130,13 @@
>>
>>         def test_choice(self):
>>             element = random.choice(self.seq)
>> -           self.assertIn(element, self.seq)
>> +           self.assertTrue(element in self.seq)
>>
>>         def test_sample(self):
>>             with self.assertRaises(ValueError):
>>                 random.sample(self.seq, 20)
>>             for element in random.sample(self.seq, 5):
>> -               self.assertIn(element, self.seq)
>> +               self.assertTrue(element in self.seq)
>>
>>     if __name__ == '__main__':
>>         unittest.main()
>>
>> --
>> Repository URL: http://hg.python.org/cpython
>>
>> _______________________________________________
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>> Python-checkins at python.org
>> http://mail.python.org/mailman/listinfo/python-checkins
>>
>>
>
>

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Use simpler assert in basic example.