python - ImportError when using rpy2 with numpy.testing -


i've run rather strange error when doing unit testing numpy.testing module. i'm running ipython notebook in vm. in code, have 1 test compare output in r. requires me load rpy2 modules so:

import rpy2.robjects robjects rpy2.robjects.packages import importr fastclime = importr('fastclime') grdevices = importr('grdevices')

however when run ! py.test, following error:

==================================== errors ====================================

_____________________ error collecting test_fastclime_r.py _____________________ test_fastclime_r.py:6: in <module>     import rpy2.robjects robjects ../../anaconda/lib/python2.7/site-packages/rpy2/robjects/__init__.py:15: in <module>     import rpy2.rinterface rinterface ../../anaconda/lib/python2.7/site-packages/rpy2/rinterface/__init__.py:101: in <module>     rpy2.rinterface._rinterface import * e   importerror: /home/bitnami/anaconda/bin/../lib/libreadline.so.6: undefined symbol: pc ====================== 10 passed, 1 error in 0.19 seconds ======================

i suspect has environment variable not being linked working directory, have no idea how fix it. suggestions appreciated! thank you!

the solution

1) delete __pycache__ directory if previous version created

2) install readline in anaconda in command line: conda install -c asmeurer readline

3) inside .py file include import readline


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