diff --git a/Week03/pyramid_tarik_bozgan.py b/Week03/pyramid_tarik_bozgan.py
new file mode 100644
index 00000000..fa762647
--- /dev/null
+++ b/Week03/pyramid_tarik_bozgan.py
@@ -0,0 +1,7 @@
+def calculate_pyramid_height(number_of_blocks):
+    height = 0
+    while(number_of_blocks >= 0):
+        height += 1
+        number_of_blocks -= height
+    return height - 1
+
diff --git a/Week04/decorators_tarik_bozgan.py b/Week04/decorators_tarik_bozgan.py
new file mode 100644
index 00000000..f92cb3fa
--- /dev/null
+++ b/Week04/decorators_tarik_bozgan.py
@@ -0,0 +1,24 @@
+import time
+import sys
+import functools
+def performance(func):
+    @functools.wraps(func)
+    def wrapper(*args, **kwargs):
+        start_time = time.perf_counter()
+        
+        result = func(*args, **kwargs)
+        
+        end_time = time.perf_counter()
+        mem_usage = sys.getsizeof(result)
+
+        wrapper.counter += 1
+        wrapper.total_time += (end_time - start_time)
+        wrapper.total_mem += mem_usage
+        
+        return result
+
+    wrapper.counter = 0
+    wrapper.total_time = 0
+    wrapper.total_mem = 0
+
+    return wrapper
\ No newline at end of file
diff --git a/Week04/functions_tarik_bozgan.py b/Week04/functions_tarik_bozgan.py
new file mode 100644
index 00000000..01e864c6
--- /dev/null
+++ b/Week04/functions_tarik_bozgan.py
@@ -0,0 +1,29 @@
+import sys
+
+custom_power = lambda x=0, /, e=1: x**e
+
+def custom_equation(x: int = 0, y: int = 0, /, a: int = 1, b: int = 1, *, c: int = 1) -> float:
+    """
+    Belirtilen formüle göre kayan noktalı bir sayı döndürür.
+
+    :param x: Konumsal-tek parametre (Varsayılan 0).
+    :param y: Konumsal-tek parametre (Varsayılan 0).
+    :param a: Konumsal-veya-anahtar kelime parametresi (Varsayılan 1).
+    :param b: Konumsal-veya-anahtar kelime parametresi (Varsayılan 1).
+    :param c: Anahtar kelime-tek parametre (Varsayılan 1).
+    :returns: (x**a + y**b) / c formülünün sonucunu döndürür.
+    :rtype: float
+    """
+    return (x**a + y**b) / c
+
+def fn_w_counter() -> tuple[int, dict[str, int]]:
+    if not hasattr(fn_w_counter, 'count'):
+        fn_w_counter.count = 0
+        fn_w_counter.callers = {}
+
+    caller_name = sys._getframe(1).f_globals['__name__']
+    
+    fn_w_counter.count += 1
+    fn_w_counter.callers[caller_name] = fn_w_counter.callers.get(caller_name, 0) + 1
+
+    return fn_w_counter.count, fn_w_counter.callers
\ No newline at end of file