def get_ratio_and_stats(filenames, distinct, merge, zero_columns=None):
"""Parse input files to produce mean recipe ratio and related statistics
"""
files = [open(filename) for filename in filenames]
ingredients, proportions = read_files(files)
proportions = to_grams(ingredients, proportions)
if distinct:
proportions = set(proportions)
ingredients, proportions = merge_columns(ingredients, proportions,
merge)
statistics = calculate_statistics(proportions, ingredients, zero_columns)
ratio = Ratio(ingredients, statistics.bakers_percentage())
return ingredients, ratio, statistics, len(proportions)
def normalize(ingredients, columns):
"""Tests were originally written with the axis swapped, so
we use zip to swap back here so that the tests don't need
to change"""
columns = to_grams(ingredients, columns)
return zip(*normalize_to_100g(columns))
