diff --git a/Week01/info_mehmet_ensar_dolgun.py b/Week01/info_mehmet_ensar_dolgun.py
new file mode 100644
index 00000000..2cdec203
--- /dev/null
+++ b/Week01/info_mehmet_ensar_dolgun.py
@@ -0,0 +1,2 @@
+student_id="220316009"
+full_name="Mehmet Ensar Dolgun"
diff --git a/Week02/types_mehmet_ensar_dolgun.py b/Week02/types_mehmet_ensar_dolgun.py
new file mode 100644
index 00000000..6ce9df17
--- /dev/null
+++ b/Week02/types_mehmet_ensar_dolgun.py
@@ -0,0 +1,4 @@
+my_int = 15
+my_float = 17.2
+my_bool = False
+my_complex = 4j
diff --git a/Week03/sequences_mehmet_ensar_dolgun.py b/Week03/sequences_mehmet_ensar_dolgun.py
new file mode 100644
index 00000000..7cfec9fd
--- /dev/null
+++ b/Week03/sequences_mehmet_ensar_dolgun.py
@@ -0,0 +1,15 @@
+def remove_duplicates(seq: list) -> list:
+    return list(dict.fromkeys(seq))  # sıralamayı bozmadan tekrarları kaldırır
+
+def list_counts(seq: list) -> dict:
+    L = {}
+    for i in seq:
+        L[i] = L.get(i, 0) + 1  # daha kısa ve temiz
+    return L
+
+def reverse_dict(d: dict) -> dict:
+    rd = {}
+    for i, h in d.items():
+        if h not in rd:   # çakışma varsa ezmemesi için
+            rd[h] = i
+    return rd