Re: [Pytables-users] Problems with Converting Python Int to C Long

[Jacob B. <jac...@gm...>]

It's strange really. It seems like anything int 64 in python (greater than
4billion) fails to convert and throws this message; however, for numbers
that can be represented by int 32 can convert fine. Btw, this is for a
field that is defined as UInt64 in pytables and only fails if I do
Table.append(row). If I do insertion based upon table.row, then it works
fine.

I will look at this issue more later tonight, and will report my findings.

Thanks,
Jacob

On Thu, Jun 28, 2012 at 5:37 PM, Anthony Scopatz <sc...@gm...> wrote:

> Hello Again Jacob,
>
> Hmm are they of Python type long?  Also, what exactly is the number that
> is failing?
>
> Be Well
> Anthony
>
> On Thu, Jun 28, 2012 at 4:18 PM, Jacob Bennett <jac...@gm...>wrote:
>
>> Hello PyTables Users,
>>
>> I have a concern with a very strange error that references that my python
>> ints cannot be converted to C longs when trying to run Table.append(rows).
>> My python integers are definitely not big, at most they would probably be
>> around 3 billion in size, which shouldn't be any problem for conversion to
>> C long.
>>
>> This is the error that I am receiving...
>>
>> Exception in thread bookthread:
>> Traceback (most recent call last):
>>   File "C:\Python27\lib\threading.py", line 551, in __bootstrap_inner
>>     self.run()
>>   File
>> "C:\Users\jacob.bennett\development\MarketDataReader\PyTablesInterface\Acceptor.py",
>> line 21, in run
>>     BookDataWrapper.acceptDict()
>>   File
>> "C:\Users\jacob.bennett\development\MarketDataReader\PyTablesInterface\BookDataWrapper.py",
>> line 49, in acceptDict
>>     tableD.append(dataArray)
>>   File "C:\Python27\lib\site-packages\tables\table.py", line 2076, in
>> append
>>     "rows parameter cannot be converted into a recarray object compliant
>> with table '%s'. The error was: <%s>" % (str(self), exc)
>> ValueError: rows parameter cannot be converted into a recarray object
>> compliant with table '/t301491615959191971 (Table(0,), shuffle, blosc(3))
>> 'Instrument''. The error was: <Python int too large to convert to C long>
>>
>> Thanks,
>> Jacob
>>
>> --
>> Jacob Bennett
>> Massachusetts Institute of Technology
>> Department of Electrical Engineering and Computer Science
>> Class of 2014| ben...@mi...
>>
>>
>>
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>
>
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-- 
Jacob Bennett
Massachusetts Institute of Technology
Department of Electrical Engineering and Computer Science
Class of 2014| ben...@mi...