diff --git a/Week03/pyramid_zeynepnur_erten.py b/Week03/pyramid_zeynepnur_erten.py
new file mode 100644
index 00000000..01aceaf6
--- /dev/null
+++ b/Week03/pyramid_zeynepnur_erten.py
@@ -0,0 +1,9 @@
+def calculate_pyramid_height(number_of_blocks):
+  i = 1
+  height = 0
+  while (number_of_blocks >= i) :
+    number_of_blocks = number_of_blocks - i
+    height += 1
+    i += 1
+    
+  return height