def count_of_phones(self):
return round_to_significant_figures(
sum(area.count_of_phones for area in self.areas), 1)
def count_of_phones_likely(self):
area_estimate = self.simple_polygons.estimated_area
bleed_area_estimate = self.simple_polygons.bleed.estimated_area - area_estimate
return round_to_significant_figures(
self.count_of_phones +
(self.count_of_phones * bleed_area_estimate / area_estimate), 1)
def test_round_to_significant_figures(value, significant_figures,
expected_result):
assert round_to_significant_figures(value,
significant_figures) == expected_result