Barrack: the place for stuff connected to archery

mapping_row_iter

My secret weapon for transforming dict in CSV:

>>> from archery.barrack import mapping_row_iter
>>> [ x for x in mapping_row_iter({
...     "john" : {'math':10.0, 'sport':1.0},
...     "lily" : { 'math':20, 'sport':15.0}
... })]
[['john', 'sport', 1.0], ['john', 'math', 10.0],
['lily', 'sport', 15.0], ['lily', 'math', 20]]