Deepwalker · August 29, 2015 14:26
diff --git a/map_reduce.py b/map_reduce.py
 GET_KEY = lambda x: x[0]

 def map_reduce(rows, mapper, reducer):
    return (
        reducer(key, (row[1] for row in rows))
        for key, rows in groupby(sorted(mapper(rows), key=GET_KEY), GET_KEY)
    )
	GET_KEY = lambda x: x[0]

	def map_reduce(rows, mapper, reducer):
	return (
	reducer(key, (row[1] for row in rows))
	for key, rows in groupby(sorted(mapper(rows), key=GET_KEY), GET_KEY)
	)