I am using Jenkins to build a python (Flask) solution to deploy to Google App Engine. As part of the build process I run a few integration tests.

One of them is failing with the following error.

ERROR: Failure: ImportError (PyCapsule_Import could not import module "pyexpat")
----------------------------------------------------------------------
Traceback (most recent call last):File "/usr/local/lib/python2.7/dist-packages/nose-1.3.6-py2.7.egg/nose/loader.py", line 420, in loadTestsFromNameaddr.filename, addr.module)File "/usr/local/lib/python2.7/dist-packages/nose-1.3.6-py2.7.egg/nose/importer.py", line 47, in importFromPathreturn self.importFromDir(dir_path, fqname)File "/usr/local/lib/python2.7/dist-packages/nose-1.3.6-py2.7.egg/nose/importer.py", line 94, in importFromDirmod = load_module(part_fqname, fh, filename, desc)File "/opt/bitnami/apps/jenkins/jenkins_home/jobs/CFC Melbourne production pipeline/workspace/Tests/test_integration.py", line 4, in <module>from main import appFile "/opt/bitnami/apps/jenkins/jenkins_home/jobs/CFC Melbourne production pipeline/workspace/main.py", line 28, in <module>from Routes.AdminRoutes import admin_routesFile "/opt/bitnami/apps/jenkins/jenkins_home/jobs/CFC Melbourne production pipeline/workspace/Routes/AdminRoutes.py", line 7, in <module>from thirdpartylib import cloudstorageFile "/opt/bitnami/apps/jenkins/jenkins_home/jobs/CFC Melbourne production pipeline/workspace/thirdpartylib/cloudstorage/__init__.py", line 22, in <module>from cloudstorage_api import *File "/opt/bitnami/apps/jenkins/jenkins_home/jobs/CFC Melbourne production pipeline/workspace/thirdpartylib/cloudstorage/cloudstorage_api.py", line 37, in <module>import xml.etree.cElementTree as ETFile "/usr/lib/python2.7/xml/etree/cElementTree.py", line 3, in <module>from _elementtree import *
ImportError: PyCapsule_Import could not import module "pyexpat"

I have logged onto the VM and searched for this module and this is what i get

xxx@jenkins-pre1:~$ sudo find / -name pyexpat*
/usr/lib/python2.7/lib-dynload/pyexpat.so
/var/lib/docker/aufs/diff/d0cfa9780fa540e496fd60e38f32c58708374a4a62bc8a6462834c7757a31cdf/usr/lib/python2.7/lib-dy
nload/pyexpat.x86_64-linux-gnu.so

I guess its install but the module cannot be imported. Please help.

The module is in the python path.

>>> import sys
>>> print sys.path
['', '/usr/local/lib/python2.7/dist-packages/setuptools-15.2-py2.7.egg', '/usr/local/lib/python2.7/dist-packages/no
se-1.3.6-py2.7.egg', '/usr/local/lib/python2.7/dist-packages/pip-7.0.3-py2.7.egg', '/usr/lib/python2.7', '/usr/lib/
python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload'
, '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/pymodules/python2.7']
>>> 

I found a workaround to this issue:

In your jenkins script, just clear LD_LIBRARY_PATH variable at the beginning:

export LD_LIBRARY_PATH=""

This does the trick!!