Uwe L. Korn created ARROW-230:
---------------------------------
Summary: Python: Do not name modules like native ones (i.e. rename
pyarrow.io)
Key: ARROW-230
URL: https://issues.apache.org/jira/browse/ARROW-230
Project: Apache Arrow
Issue Type: Bug
Components: Python
Reporter: Uwe L. Korn
Although you can rename it in imports, still weird stuff can happen.
E.g. if you re-run make in the build directory (only happens probably if you
change pyarrow's CMakeLists.txt and do not call it via setup.py) you will get
the following error:
{noformat}
-- Found Python lib /usr/lib/x86_64-linux-gnu/libpython2.7.so
CMake Error at cmake_modules/FindNumPy.cmake:62 (message):
NumPy import failure:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/__init__.py",
line 180, in <module>
from . import add_newdocs
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/add_newdocs.py",
line 13, in <module>
from numpy.lib import add_newdoc
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/lib/__init__.py",
line 8, in <module>
from .type_check import *
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/lib/type_check.py",
line 11, in <module>
import numpy.core.numeric as _nx
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/core/__init__.py",
line 58, in <module>
from numpy.testing import Tester
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/testing/__init__.py",
line 14, in <module>
from .utils import *
File
"/home/uwe/.virtualenvs/pyarrow/local/lib/python2.7/site-packages/numpy/testing/utils.py",
line 15, in <module>
from tempfile import mkdtemp
File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
import io as _io
ImportError:
/home/uwe/Development/arrow/python/build/temp.linux-x86_64-2.7/./libpyarrow.so:
undefined symbol: pyarrow_ARRAY_API
Call Stack (most recent call first):
CMakeLists.txt:223 (find_package)
{noformat}
The actual error message here is confusing but the basic problem is that here
the wrong io module is imported.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
