ZEPPELIN-34 dirty quick fix python indentation problem

[Leemoonsoo]

This pullrequest trying to fix https://issues.apache.org/jira/browse/ZEPPELIN-34
I think part of python integration should be refactored some day. because it's not testable.
this is quick dirty fix for ZEPPELIN-34.

[felixcheung]

Whitespace is significant for Python, perhaps we shouldn't trim it out at all.

it could be a function definition, a if-else, or anything else. It could also be nested too:

>>> if foo:
...     if bar:
...         x = 42
... else:
...   print foo

[rnowling]

My reading of the code says that it only strips off new line characters and adds them back in. The s.replace() is never added to accumulated string -- just used for testing.

But, you may be right about not using split("\n") above in the code.