ch08, 09, 10: example files

09-closure-deco/clockdeco.py

@@ -0,0 +1,21 @@
+import time
+import functools
+
+
+def clock(func):
+    @functools.wraps(func)
+    def clocked(*args, **kwargs):
+        t0 = time.perf_counter()
+        result = func(*args, **kwargs)
+        elapsed = time.perf_counter() - t0
+        name = func.__name__
+        arg_lst = []
+        if args:
+            arg_lst.append(', '.join(repr(arg) for arg in args))
+        if kwargs:
+            pairs = [f'{k}={v!r}' for k, v in kwargs.items()]
+            arg_lst.append(', '.join(pairs))
+        arg_str = ', '.join(arg_lst)
+        print(f'[{elapsed:0.8f}s] {name}({arg_str}) -> {result!r}')
+        return result
+    return clocked