One easy option in old CDH versions is just to change the shebang at the beginning of the script to:   #!/usr/bin/env python2 Actually this will be more precise than the default, because the script is actually a python 2 script and ... python 3 is coming ... so it is good to be specific about the given version of the interpreter the script needs. We could be even more explicit and require python2.7.   ... View more