Find the closest match of a list in a list containing lists
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I have a list with two elements like this:

	list_a = [27.666521, 85.437447]

and another list like this:
	big_list = [[27.666519, 85.437477], [27.666460, 85.437622], ...]

And I want to find the closest match of list_a within list_b.

For example, here the closest match would be [27.666519, 85.437477].

How would I be able to achieve this?

I found a similar problem [here][1] for finding the closest match of a string in an array but was unable to reproduce it similarly for the above mentioned problem.


  [1]: http://stackoverflow.com/questions/445782/finding-closest-match-in-collection-of-numbers