$ fab
Traceback (most recent call last):
  File "/home/surya/.local/bin/fab", line 7, in <module>
    from fabric.main import main
  File "/home/surya/.local/lib/python3.4/site-packages/fabric/main.py", line 13, in <module>
    from operator import isMappingType
ImportError: cannot import name 'isMappingType'