IFT-300 Adapt Find in Files lesson samples to Python 2.7

IJ-CR-16198

GitOrigin-RevId: 54a7ee531d436430d0a27927e610471d36f7adfc

python/python-features-trainer/resources/learnProjects/python/PyCharmLearningProject/src/warehouse/__init__.py

@@ -1,31 +1,31 @@
-from util.util import FRUITS
+from util import FRUITS
 
 
 class Warehouse:
     # Fruit name to amount of it in warehouse
     entry = {}  # Apple, banana, etc...
 
-    def __init__(self) -> None:
+    def __init__(self):
         for fruit in FRUITS:
             self.entry[fruit] = 0
 
     # fruit name from util.FRUITS (mango, apple...)
-    def add_fruits(self, fruit_name, quantity) -> None:
+    def add_fruits(self, fruit_name, quantity):
         cur_quantity = self.entry.get(fruit_name)
         if cur_quantity is not None:
             self.entry[fruit_name] = cur_quantity + quantity
         else:
-            raise KeyError(f"Not found fruit with name: {fruit_name}")
+            raise KeyError("Not found fruit with name: " + fruit_name)
 
-    def take_fruit(self, fruit_name) -> bool:
+    def take_fruit(self, fruit_name):
         cur_quantity = self.entry.get(fruit_name)
         if cur_quantity is None:
-            raise KeyError(f"Not found fruit with name: {fruit_name}")
+            raise KeyError("Not found fruit with name: " + fruit_name)
         elif cur_quantity > 0:
             self.entry[fruit_name] = cur_quantity - 1
             return True
         return False
 
-    def print_all_fruits(self) -> None:
+    def print_all_fruits(self):
         for fruit, quantity in self.entry.items():
-            print(f"{fruit}: {quantity}")
+            print(fruit + ": " + str(quantity))

python/python-features-trainer/resources/learnProjects/python/PyCharmLearningProject/src/warehouse/find_in_files_sample.py

@@ -1,4 +1,4 @@
-from warehouse.warehouse import Warehouse
+from warehouse import Warehouse
 
 warehouse = Warehouse()
 warehouse.add_fruits('peach', 3)