The problem:
After reinstalling Anaconda I can no longer navigate to a folder using the command window where I\'ve got some .pynb files
.pynb
if you have oracle client installed for cx_Oracle package please check if you have /usr/lib in the DYLD_LIBRARY_PATH. Try removing /usr/bin from the path and see if it works.
I had the same problem and this worked for me. I have tried it on MacOS.