decorator

Author: AstinCHOI

5장_객체_지향_설계/1_benchmark_decorator.py

@@ -0,0 +1,22 @@
+import random
+import time
+
+
+def benchmark(func):
+    def wrapper(*args, **kwargs):
+        t = time.perf_counter()
+        res = func(*args, **kwargs)
+        print(f"{func.__name__} {time.perf_counter()-t}")
+        return res
+    return wrapper
+    
+@benchmark
+def random_tree(n):
+    temp = [n for n in range(n)]
+    for i in range(n+1):
+        temp[random.choice(temp)] = random.choice(temp)
+    return temp
+    
+
+if __name__ == '__main__':
+    random_tree(10000)

5장_객체_지향_설계/2_class_and_static_decorator.py

@@ -0,0 +1,19 @@
+class A(object):
+    def foo(self, x):
+        print(f"foo({self}, {x}) 실행")
+
+    @classmethod
+    def class_foo(cls, x):
+        print(f"class_foo({cls}, {x}) 실행")
+        
+    @staticmethod
+    def static_foo(x):
+        print(f"static_foo({x}) 실행")
+
+if __name__ == '__main__':
+    a = A()
+    a.foo(1)
+    a.class_foo(2)
+    A.class_foo(2)
+    a.static_foo(3)
+    A.static_foo(3)