make pipeline cleaner

[johnnychen94]

The first commit flattens the nested code structure by removing the try-catch block. There're no function changes except using isfile to check if reference file exists. (Is there any special reason using try-catch here?)

[coveralls]

Coverage decreased (-0.1%) to 84.605% when pulling 1764e98 on johnnychen94:pipeline into 31901ca on Evizero:master.

[oxinabox]

Suggested change

	# File exists:

[oxinabox]

Nice, good improvement.
Can also split the content of the two branchs of the if into their own functions.
One for handing non-existant file (handle_nonextistant ?), and one for handling disagreeing contents (handle_disagreement ?).

[johnnychen94]

Mind to merge this? I'd like to open a new PR based on this so that it's easier to be reviewed.

[oxinabox]

I stand by my above comments re breaking it into more functions.

[johnnychen94]

Ahh, yes, but I have"better" ideas than simply breaking it into parts, and that would change the code structure.

[johnnychen94]

Or I could push commits into this branch if you like.

[oxinabox]

Ok lets merge this first.