Debugger example

README.md

@@ -557,7 +557,7 @@ from functools import wraps
 def debug(func):
     @wraps(func)  # Needed for metadata copying (func name, ...).
     def out(*args, **kwargs):
-        print(func.__name__)
+        print(f'You called function {func.__name__!r}.')
         return func(*args, **kwargs)
     return out
 
@@ -566,6 +566,12 @@ def add(x, y):
     return x + y
 ```
 
+```python
+>>> add(2, 2)
+You called function 'add'.
+4
+```
+
 
 Class
 -----