The problem:
I have installed Anaconda:
conda -V
conda 4.4.7
Also I installed a lot of packages for it using pyt
If you installed the package using setup.py, then you will most likely have to delete the package files manually.
You'd find the Uninstalling setup.py install wiki useful. Unix instructions quoted below:
sudo python setup.py install --record files.txt
# inspect files.txt to make sure it looks ok. Then in bash:
tr '\n' '\0' < files.txt | xargs -0 sudo rm -f --