additional topics has been added

codeasarjun · codeasarjun · commit eb662cc42141 · 2024-08-30T08:09:51.000+05:30
diff --git a/additional-materials/decorators/decorators_example.py b/additional-materials/decorators/decorators_example.py
@@ -0,0 +1,60 @@
+# decorators.py
+
+import time
+import logging
+from functools import wraps
+
+# Configure logging
+logging.basicConfig(level=logging.INFO)
+
+def log_function_call(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        logging.info(f"Calling function '{func.__name__}' with arguments {args} and keyword arguments {kwargs}")
+        result = func(*args, **kwargs)
+        logging.info(f"Function '{func.__name__}' returned {result}")
+        return result
+    return wrapper
+
+def timing_decorator(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        start_time = time.time()
+        result = func(*args, **kwargs)
+        end_time = time.time()
+        execution_time = end_time - start_time
+        print(f"Function '{func.__name__}' took {execution_time:.4f} seconds to execute")
+        return result
+    return wrapper
+
+def requires_authentication(func):
+    @wraps(func)
+    def wrapper(user, *args, **kwargs):
+        if not user.get('authenticated'):
+            return "Access Denied: User not authenticated"
+        return func(user, *args, **kwargs)
+    return wrapper
+
+def cache_results(func):
+    cache = {}
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        if args in cache:
+            return cache[args]
+        result = func(*args, **kwargs)
+        cache[args] = result
+        return result
+    return wrapper
+
+def rate_limit(max_calls, period):
+    def decorator(func):
+        last_called = [0]
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            current_time = time.time()
+            if current_time - last_called[0] < period:
+                return "Rate limit exceeded. Please try again later."
+            last_called[0] = current_time
+            return func(*args, **kwargs)
+        return wrapper
+    return decorator
