[pypy-dev] Testing if a function exists?

[Maciej Fijalkowski]

According to this: http://docs.python.org/py3k/whatsnew/3.0.html they
renamed __builtin__ to builtins (with removed underscores). So
probably a bunch of ifs would do

On Sat, Dec 4, 2010 at 7:42 AM, Dan Stromberg <drsalists at gmail.com> wrote:
> This sounds promising, though sadly, it doesn't appear to work in Python 3.x:
>
> $ /usr/local/cpython-3.1/bin/python3 -c 'import __builtin__'
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
> ImportError: No module named __builtin__
> benchbox-dstromberg:~/src/home-svn/backshift/trunk i686-pc-linux-gnu
> 22275 - above cmd done 2010 Fri Dec 03 09:40 PM
>
> $ /usr/local/cpython-3.0/bin/python3.0 -c 'import __builtin__'
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
> ImportError: No module named __builtin__
> benchbox-dstromberg:~/src/home-svn/backshift/trunk i686-pc-linux-gnu
> 22275 - above cmd done 2010 Fri Dec 03 09:40 PM
>
> $ /usr/local/cpython-2.7/bin/python -c 'import __builtin__'
> benchbox-dstromberg:~/src/home-svn/backshift/trunk i686-pc-linux-gnu
> 22275 - above cmd done 2010 Fri Dec 03 09:41 PM
>
> $ /usr/local/cpython-2.6/bin/python -c 'import __builtin__'
> benchbox-dstromberg:~/src/home-svn/backshift/trunk i686-pc-linux-gnu
> 22275 - above cmd done 2010 Fri Dec 03 09:41 PM
>
> $ /usr/local/cpython-2.5/bin/python -c 'import __builtin__'
> benchbox-dstromberg:~/src/home-svn/backshift/trunk i686-pc-linux-gnu
> 22275 - above cmd done 2010 Fri Dec 03 09:41 PM
>
> $
>
>
> On Fri, Dec 3, 2010 at 11:37 AM, Maciej Fijalkowski <fijall at gmail.com> wrote:
>> Use:
>>
>> import __builtin__
>>
>> and treat it as module. __builtins__ is an ugly hack that is sometimes
>> a dict and sometimes a module and pypy has different corner cases.
>> __builtin__ will always work
>>
>> On Fri, Dec 3, 2010 at 9:13 PM, Leonardo Santagada <santagada at gmail.com> wrote:
>>> (I'm guessing but) In python 2.5 modules are not iterable, you can use
>>> getattr for the same effect.
>>>
>>> On Fri, Dec 3, 2010 at 5:04 PM, Dan Stromberg <drsalists at gmail.com> wrote:
>>>> How does one test if a function exists in pypy?
>>>>
>>>> In CPython 2.x and 3.x, it appears to be sufficient to use:
>>>>
>>>>   'funcname' in __bultins__
>>>>
>>>> ...but that doesn't appear to work in pypy 1.4:
>>>>
>>>>>>>> print 'platform_version' in platform
>>>> Traceback (most recent call last):
>>>>  File "<console>", line 1, in <module>
>>>> TypeError: 'module' object is not iterable
>>>>>>>> print 'bytes' in __builtins__
>>>> Traceback (most recent call last):
>>>>  File "<console>", line 1, in <module>
>>>> TypeError: 'module' object is not iterable
>>>>>>>>
>>>
>>>
>>>
>>> --
>>> Leonardo Santagada
>>> _______________________________________________
>>> pypy-dev at codespeak.net
>>> http://codespeak.net/mailman/listinfo/pypy-dev
>>
>