in uberpoet/util.py [0:0]
def merge_lists(two_d_list):
"""Merges a 2d array into a 1d array. Ex: [[1,2],[3,4]] becomes [1,2,3,4]"""
# I know this is a fold / reduce, but I got an error when I tried
# the reduce function?
return [i for li in two_d_list for i in li]