push_data.py crashes on one line in new data set

[aspiers]

Description

The data set introduced by #144 has just a single line which causes push_data.py to crash.

Comments, Questions and Considerations

Acceptance Criteria

This story can be considered done when the following acceptance tests
are satisfied:

Given the data set from #144

When I run push_data.py on it

Then it should import the whole file in a single go without crashing.