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problems with sagecell

Hi All,

I installed sagemath on Ubuntu 18.04 and am now trying to install and configure sagecell

pip install sagecell seem to work ok, but when I try to run sagecell it says:

root@shilo-ubu4:/var/tmp# sagecell
Error: No module named 'fabric'. You can install it by typing:
    sudo pip install fabric
or
    su -c "pip install fabric"

And yet fabric is installed:

root@shilo-ubu4:/var/tmp# pip install fabric
Requirement already satisfied: fabric in /usr/local/lib/python2.7/dist-packages
Requirement already satisfied: paramiko>=2.4 in /usr/local/lib/python2.7/dist-packages (from fabric)
Requirement already satisfied: invoke<2.0,>=1.1 in /usr/local/lib/python2.7/dist-packages (from fabric)
Requirement already satisfied: cryptography>=1.1 in /usr/lib/python2.7/dist-packages (from fabric)
Requirement already satisfied: pynacl>=1.0.1 in /usr/local/lib/python2.7/dist-packages (from paramiko>=2.4->fabric)
Requirement already satisfied: pyasn1>=0.1.7 in /usr/lib/python2.7/dist-packages (from paramiko>=2.4->fabric)
Requirement already satisfied: bcrypt>=3.1.3 in /usr/local/lib/python2.7/dist-packages (from paramiko>=2.4->fabric)
Requirement already satisfied: six in /usr/lib/python2.7/dist-packages (from pynacl>=1.0.1->paramiko>=2.4->fabric)
Requirement already satisfied: cffi>=1.4.1 in /usr/local/lib/python2.7/dist-packages (from pynacl>=1.0.1->paramiko>=2.4->fabric)
Requirement already satisfied: pycparser in /usr/local/lib/python2.7/dist-packages (from cffi>=1.4.1->pynacl>=1.0.1->paramiko>=2.4->fabric)

So what am I missing here?

Thanks,

Oren