def test_should_return_correct_size_ranges(self):
expected = [0.8591994480026335,
1.7041441133233817,
3.3800151591412964,
6.703953255306071,
13.296682746460451]
self.assertEqual(
expected, statistics.size_ranges([1, 2, 3, 4, 5, 6, 7]))
def execute(self):
"""Calculate and display the relative size table report"""
data = io.read_csv_file(self.file_path)
if not data:
print "NO DATA"
return
if not all([self.are_valid_keys(each.keys()) for each in data]):
raise RuntimeError(
'Invalid data columns {}'.format(data[0].keys()))
normalized_data = self.get_normalized_data(data)
normalized_by_category = self.group_by_category(normalized_data)
results = {}
for category, items in normalized_by_category.iteritems():
if len(items) < 2:
results[category] = [items[0]] * 5
else:
results[category] = statistics.size_ranges(items)
self.print_table(results)
