Solution

app/main.py

@@ -1,6 +1,19 @@
+from functools import wraps
 from typing import Callable
 
 
 def cache(func: Callable) -> Callable:
-    # Write your code here
-    pass
+    storage_cache = {}
+
+    @wraps(func)
+    def wrapper(*args, **kwargs) -> Callable:
+        key = (args, tuple(kwargs.items()))
+        if key not in storage_cache:
+            result = func(*args, **kwargs)
+            storage_cache[key] = result
+            print("Calculating new result")
+            return result
+        else:
+            print("Getting from cache")
+            return storage_cache[key]
+    return wrapper