02/03

02/ex3/ft_finally_block.py

@@ -0,0 +1,20 @@
+def water_plants(plant_list: []) -> None:
+    for plant in plant_list:
+        if plant == None:
+            raise ValueError
+        print("Watering", plant)
+
+
+def test_watering_system() -> None:
+    plants = ["tomato", "lettuce", "carrots", None]
+    try:
+        print("Opening watering system")
+        water_plants(plants)
+    except:
+        print("Error: Cannot water None - invalid plant!")
+    finally:
+        print("Closing watering system (cleanup)")
+
+
+if __name__ == "__main__":
+    test_watering_system()