allergies exercise

python/allergies/allergies.py

@@ -0,0 +1,30 @@
+from math import log2, ceil
+
+scores = {
+    1 : 'eggs',
+    2 : 'peanuts',
+    4 : 'shellfish',
+    8 : 'strawberries',
+    16 :'tomatoes',
+    32 : 'chocolate',
+    64 : 'pollen',
+    128 : 'cats'
+}
+
+class Allergies(object):
+    def __init__(self, score):
+        self.score = score
+
+    def allergic_to(self, item):
+        return item.lower().strip() in self.lst
+
+    @property
+    def lst(self):
+        temp1 = []
+        if self.score > (2 ** len(scores)):
+            self.score -= (2 ** (ceil(log2(self.score)) - 1))
+        while self.score > 0:
+            temp2 = max(scores.keys(), key= lambda item : 0 if item > self.score else item)
+            self.score -= temp2
+            temp1.append(scores[temp2])
+        return list(dict.fromkeys(temp1))