Solution

.flake8

@@ -4,4 +4,4 @@ ignore = E203, E266, W503, ANN002, ANN003, ANN101, ANN102, ANN401, N807, N818
 max-line-length = 79
 max-complexity = 18
 select = B,C,E,F,W,T4,B9,ANN,Q0,N8,VNE
-exclude = venv, tests
+exclude = .venv, tests

app/main.py

@@ -1,6 +1,16 @@
-from typing import Callable
+from typing import Callable, Dict, Tuple, Any
 
 
 def cache(func: Callable) -> Callable:
-    # Write your code here
-    pass
+    cache_storage: Dict[Tuple, Any] = {}
+
+    def wrapper(*args) -> any:
+        if args in cache_storage:
+            print("Getting from cache")
+            return cache_storage[args]
+        else:
+            print("Calculating new result")
+            result = func(*args)
+            cache_storage[args] = result
+            return result
+    return wrapper