Yu Chem Yu Chem - 1 month ago 14
Linux Question

Datastax Python cassandra driver build fails on Ubuntu

I was trying to install Datastax Python Cassandra driver on Ubuntu 14.04.5. LTS. Installation succeeds but subsequent attempt to use it fails with the error:


Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 3.13.0-91-generic x86_64)
~$ python3 --version
Python 3.5.2
~$ python3 -c 'import cassandra; print(cassandra.__version__)'
3.7.0
~$ python3 cassandra_loader.py
Traceback (most recent call last):
File "cassandra_loader.py", line 7, in
from cassandra_tools import transform_record, QueryManager
File "../lib/cassandra_tools.py", line 6, in
from cassandra.cluster import Cluster
ImportError: /usr/local/lib/python3.5/site-packages/cassandra/cluster.cpython-35m-x86_64-linux-gnu.so: undefined symbol: PyException_Check


same installation process and same code works well on RedHat. Google search for error code returns nothing. Anybody has an idea of what could be the issue?

Answer

This is duplicate of this question: cluster.cpython-34m.so: undefined symbol: PyException_Check

I answered it there but here is copy of the answer as I can't comment.


Latest version of Cython (0.25) released today broke cassandra-driver.

Workaround for this issue it to install Cython==0.24.1 before installing cassandra-driver.

(env) $ pip install Cython==0.24.1 (env) $ pip install cassandra-driver

You may need to remove existing cassandra-driver package first from site-packages:

rm -r $WHERE_PYTHON_IS_INSTALLED/lib/python2.7/site-packages/cassandra*

See https://datastax-oss.atlassian.net/browse/PYTHON-656 for more information

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