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/Week03/sequences_tarik_bozgan.py b/Week03/sequences_tarik_bozgan.py
new file mode 100644
index 00000000..1ba02067
--- /dev/null
+++ b/Week03/sequences_tarik_bozgan.py
@@ -0,0 +1,23 @@
+def remove_duplicates(seq):
+    result = []
+    for item in seq:
+        if item not in result:
+            result.append(item)
+    return result
+
+
+def list_counts(seq):
+    counts = {}
+    for item in seq:
+        if item in counts:
+            counts[item] += 1
+        else:
+            counts[item] = 1
+    return counts
+
+
+def reverse_dict(d):
+    reversed_dict = {}
+    for key, value in d.items():
+        reversed_dict[value] = key
+    return reversed_dict
\ No newline at end of file
diff --git a/Week04/decorators_tarik_bozgan.py b/Week04/decorators_tarik_bozgan.py
new file mode 100644
index 00000000..9200e400
--- /dev/null
+++ b/Week04/decorators_tarik_bozgan.py
@@ -0,0 +1,21 @@
+import time
+import tracemalloc
+
+def performance(func):
+    func.counter = 0
+    func.total_time = 0
+    func.total_mem = 0
+
+    def wrapper(*args, **kwargs):
+        func.counter += 1
+        start_time = time.perf_counter()
+        tracemalloc.start()
+        result = func(*args, **kwargs)
+        current, peak = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+        func.total_time += (time.perf_counter() - start_time)
+        func.total_mem += peak
+
+        return result
+
+    return wrapper
diff --git a/Week04/functions_tarik_bozgan.py b/Week04/functions_tarik_bozgan.py
new file mode 100644
index 00000000..f3645f6a
--- /dev/null
+++ b/Week04/functions_tarik_bozgan.py
@@ -0,0 +1,21 @@
+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:
+    """
+    Calculate a custom equation: (x**a + y**b) / c
+    
+    :param x: First base value (positional-only)
+    :param y: Second base value (positional-only)
+    :param a: Exponent for x (positional-or-keyword)
+    :param b: Exponent for y (positional-or-keyword)
+    :param c: Divisor (keyword-only)
+    :return: The result of (x**a + y**b) / c
+    :rtype: float
+    """
+    return (x**a + y**b) / c
+
+def fn_w_counter(_calls={"__main__": 0}):
+    _calls["__main__"] += 1
+    return _calls["__main__"], dict(_calls)
+
+