[Scons-users] import pandas into SConstruct

[Bill Deegan]

Chris,

I see the problem. (in scons's compat.py renaming packages to prep for py3
compatibility).
Which version of SCons are you using?

-Bill

On Thu, Mar 10, 2016 at 8:12 PM, chris warth <cswarth at gmail.com> wrote:

> Thanks!  If it's any help, I've reduced the example to one that doesn't
> involve pandas at all.  It seems that under scons, 'pkl.Unpickler' is a
> function rather than a class.
>
> $ cat scons.py
>
> import pickle as pkl
> print type(pkl.Unpickler)
>
> class Unpickler(pkl.Unpickler):
>     pass
>
> $ python scons.py
>
>
>
>
> <type 'classobj'>
>
> $ scons -f scons.py
>
>
>
>
> scons: Reading SConscript files ...
> <type 'builtin_function_or_method'>
> TypeError: Error when calling the metaclass bases
>     cannot create 'builtin_function_or_method' instances:
>   File "/path/explore/scons.py", line 5:
>     class Unpickler(pkl.Unpickler):
>
>
> On Thu, Mar 10, 2016 at 5:09 PM, Bill Deegan <bill at baddogconsulting.com>
> wrote:
>
>> Just built a virtualenv with pandas and scons.
>> Get same stack trace.
>> Let me take a quick look and see if it's something simple.
>>
>> -Bill
>>
>> On Thu, Mar 10, 2016 at 7:49 PM, William Blevins <wblevins001 at gmail.com>
>> wrote:
>>
>>> See inline.
>>>
>>> On Thu, Mar 10, 2016 at 10:39 PM, chris warth <cswarth at gmail.com> wrote:
>>>
>>>> I am having trouble importing the pandas package into an SConstruct
>>>> file.
>>>> Can anyone confirm if this is real defect or just something in my
>>>> environment?
>>>>
>>>> Thanks for any help,
>>>>
>>>> - Chris
>>>>
>>>>
>>>> $ cat >scons.test
>>>>> import pandas as pd
>>>>> ^D
>>>>> $ scons -f scons.test
>>>>> scons: Reading SConscript files ...
>>>>> TypeError: Error when calling the metaclass bases
>>>>>     cannot create 'builtin_function_or_method' instances:
>>>>>   File "/path/explore/scons.test", line 1:
>>>>>     import pandas as pd
>>>>>   File
>>>>> "/path/venv/local/lib/python2.7/site-packages/pandas/__init__.py", line 48:
>>>>>     from pandas.io.api import *
>>>>>   File
>>>>> "/path/venv/local/lib/python2.7/site-packages/pandas/io/api.py", line 14:
>>>>>     from pandas.io.pickle import read_pickle, to_pickle
>>>>>   File
>>>>> "/path/venv/local/lib/python2.7/site-packages/pandas/io/pickle.py", line 1:
>>>>>     from pandas.compat import cPickle as pkl, pickle_compat as pc, PY3
>>>>>   File
>>>>> "/path/venv/local/lib/python2.7/site-packages/pandas/compat/pickle_compat.py",
>>>>> line 57:
>>>>>     class Unpickler(pkl.Unpickler):
>>>>>
>>>>
>>>
>>> This error isn't coming from SCons. This error is coming from trying to
>>> import from the pandas library. Right? Is the version of pandas installed
>>> setup for python3 rather than python2?
>>>
>>>
>>>> $ python --version
>>>>> Python 2.7.6
>>>>> $ scons --version
>>>>> SCons by Steven Knight et al.:
>>>>>         script: v2.4.1.rel_2.4.1:3453:73fefd3ea0b0, 2015/11/09
>>>>> 03:25:05, by bdbaddog on ubuntu1404-32bit
>>>>>         engine: v2.4.1.rel_2.4.1:3453:73fefd3ea0b0, 2015/11/09
>>>>> 03:25:05, by bdbaddog on ubuntu1404-32bit
>>>>>         engine path:
>>>>> ['/shared/silo_researcher/Matsen_F/MatsenGrp/working/cwarth/founder-inference-bakeoff/venv/lib/scons-2.4.1/SCons']
>>>>> Copyright (c) 2001 - 2015 The SCons Foundation
>>>>> $ python -c 'import pandas as pd; print pd.__version__'
>>>>> 0.17.1
>>>>
>>>>
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>>>>
>>>
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>>
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>
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