Create timer_berkin_yildirim.py

Week06/timer_berkin_yildirim.py

@@ -0,0 +1,43 @@
+import time
+from typing import Optional, Callable
+
+class Timer:
+    def __init__(self, log: bool = True, callback: Optional[Callable[[float], None]] = None):
+        """
+        Initialize the Timer with optional logging and a callback function.
+        :param log: If True, logs start and end messages; if False, remains silent.
+        :param callback: An optional function to call with the elapsed time when exiting.
+        """
+        self.log = log
+        self.callback = callback
+        self.start_time = None
+        self.end_time = None
+        self.elapsed_time = None
+        if self.log:
+            print(f"{self.__class__.__name__} initialized.")
+
+    def __enter__(self) -> "Timer":
+        """
+        Start the timer upon entering the context.
+        """
+        self.start_time = time.time()
+        if self.log:
+            print(f"{self.__class__.__name__} started.")
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb) -> bool:
+        """
+        Stop the timer upon exiting the context and calculate the elapsed time.
+        Calls the callback function if provided.
+        """
+        self.end_time = time.time()
+        self.elapsed_time = self.end_time - self.start_time
+        if self.log:
+            print(f"{self.__class__.__name__} ended. Elapsed time: {self.elapsed_time:.4f} seconds")
+
+        # If a callback is provided, call it with the elapsed time
+        if self.callback:
+            self.callback(self.elapsed_time)
+
+        # Return False to allow any exceptions to propagate
+        return False