+ oop tasks

mod_oop/2.3_12_bag_of_things.py

@@ -0,0 +1,59 @@
+# https://stepik.org/lesson/701985/step/12?unit=702086
+
+from typing import List
+
+
+class Thing:
+    def __init__(self, name: str, weight: int):
+        self.name, self.weight = name, weight
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self.name!r}, {self.weight!r})"
+
+
+class Bag:
+    def __init__(self, max_weight: int):
+        self.__things: List[Thing] = []
+        self.max_weight = max_weight
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self.max_weight!r})"
+
+    @property
+    def weight(self) -> int:
+        return sum(t.weight for t in self.__things)
+
+    @property
+    def remaining_weight(self) -> int:
+        return self.max_weight - self.weight
+
+    @property
+    def things(self) -> List[Thing]:
+        return self.__things
+
+    def add_thing(self, thing: Thing):
+        if self.remaining_weight >= thing.weight:
+            self.__things.append(thing)
+
+    def remove_thing(self, indx: int):
+        del self.__things[indx]
+
+    def get_total_weight(self) -> int:
+        return self.weight
+
+
+bag = Bag(1000)
+bag.add_thing(Thing("Книга по Python", 100))
+bag.add_thing(Thing("Котелок", 500))
+bag.add_thing(Thing("Спички", 20))
+bag.add_thing(Thing("Бумага", 100))
+w = bag.get_total_weight()
+for t in bag.things:
+    print(f"{t.name}: {t.weight}")
+
+
+def tests():
+    ...
+
+
+tests()