diff --git a/groep4_week3.py b/groep4_week3.py
new file mode 100644
index 0000000..d4c3e7f
--- /dev/null
+++ b/groep4_week3.py
@@ -0,0 +1,185 @@
+# week3 huiswerk :TASK MANAGER APPLICATION
+
+# version1
+
+def display_menu():
+    print("\n***TASK MANAGER***")
+    print("1.Add task")
+    print("2.Complete task")
+    print("3.Delete task")
+    print("4.Completed list")
+    print("5.List all")
+    print("6.Exit")
+
+def add_task(tasks, sequence_number):
+    if not sequence_number:
+        print("Cannot add task. No sequence numbers available")
+        return
+    task_name=input("Enter task name:").strip()
+    seq_num=sequence_number.pop(0)
+    task={
+        "sequence number": seq_num,
+        "task name": task_name,
+        "status": "pending"
+    }
+    tasks.append(task)
+    print(f"Task {task_name} added successfully with sequence number {seq_num}\n")
+
+def complete_task(tasks):
+    seq_num=int(input("Enter the sequence number of the task to completed:"))
+    for task in tasks:
+        if task["sequence number"]==seq_num and task["status"]!="deleted":
+            task["status"]="completed"
+            print(f"task '{task['task name']}' marked as completed")
+            return
+    print("Task is not found or already deleted")
+def deleted_task(tasks, sequence_number):
+    seq_num=int(input("Enter the sequence number of the task to deleted:"))
+    for task in tasks:
+        if task["sequence number"]==seq_num and task["status"]!="deleted":
+            task["status"]="deleted"
+            sequence_number.append(seq_num)
+            sequence_number.sort()
+            print(f"task '{task['task name']}' deleted successfully")
+            return
+    print("Task is not found or already deleted")
+def list_completed_task(tasks):
+    completed_tasks=[task for task in tasks if task["status"]=="completed"]
+    if not completed_tasks:
+        print("No completed task")
+    else:
+        print("Completed task:")
+        for task in completed_tasks:
+            print(f"{task['sequence number']}. {task['task name']}")
+def list_all_task(tasks):
+    if not tasks:
+        print("No tasks available")
+    else:
+        print("\nAll tasks:")
+        for task in sorted(tasks, key=lambda x:x["sequence number"]):
+            print(f"{task['sequence number']}:{task['task name']}-{task['status']}")
+
+def main():
+    tasks=[]
+    sequence_number=list(range(1,101))
+    while True:
+        display_menu()
+        choice=input("\nEnter your choice:").strip()
+        if choice=="1":
+            add_task(tasks,sequence_number)
+        elif choice=="2":
+            complete_task(tasks)
+        elif choice=="3":
+            deleted_task(tasks, sequence_number)
+        elif choice=="4":
+            list_completed_task(tasks)
+        elif choice=="5":
+            list_all_task(tasks)
+        elif choice=="6":
+            print("\nExiting task manager")
+            break
+        else:
+            print("Invalid choice. Please try again.")
+
+if __name__ == '__main__':
+    main()
+
+
+
+
+# version 2
+
+# Görev listesi
+gorevler = []
+
+# Yeni görev ekleme fonksiyonu
+def yeni_gorev_ekle(gorev_adi):
+    gorev = {
+        'sira_numarasi': len(gorevler) + 1,
+        'gorev_adi': gorev_adi,
+        'durum': 'Beklemede'
+    }
+    gorevler.append(gorev)
+    print(f"{gorev_adi} gorevi basariyla eklendi")
+
+# Tum gorevleri listeleme fonksiyonu
+def tum_gorevleri_listele():
+    print('\nTum Gorevler:')
+    if len(gorevler) == 0:
+        print('Henuz bir gorev eklemediniz...')
+        return False
+    for gorev in gorevler:
+        print(f"{gorev['sira_numarasi']}. {gorev['gorev_adi']} - Durum: {gorev['durum']}")
+    return True
+
+# Tamamlanmıs gorevleri listeleme fonksiyonu
+def tamamlanmis_gorevleri_listele():
+    print('\nTamamlanmis görevler:')
+    tamamlanmis = []
+    for gorev in gorevler:
+        if gorev['durum'] == 'Tamamlandi':
+            tamamlanmis.append(gorev)
+    if len(tamamlanmis) > 0:
+        for gorev in tamamlanmis:
+            print(f"{gorev['sira_numarasi']}. {gorev['gorev_adi']}")
+    else:
+        print('Henuz tamamlanmis gorev yok.')
+
+# Gorev tamamlama fonksiyonu
+def gorev_tamamla():
+    tum_gorevleri_listele()
+    try:
+        sira_numarasi = int(input('\nTamamlamak istediginiz gorevin sira numarasini girin: '))
+        for gorev in gorevler:
+            if gorev['sira_numarasi'] == sira_numarasi:
+                gorev['durum'] = 'Tamamlandi'
+                print(f"{sira_numarasi}. siradaki görev tamamlandi.")
+                return
+        print(f"{sira_numarasi}. siradaki görev bulunamadi.")
+    except ValueError:
+        print('Gecersiz giris. Lutfen gecerli bir numara girin.')
+
+
+# Görev silme fonksiyonu
+def gorev_sil():
+    tum_gorevleri_listele()
+    try:
+        sira_numarasi = int(input('\nSilmek istediginiz gorevin sira numarasini girin: '))
+        for gorev in gorevler:
+            if gorev['sira_numarasi'] == sira_numarasi:
+                gorevler.remove(gorev)
+                for i, g in enumerate(gorevler):
+                    g['sira_numarasi'] = i + 1
+                print(f"{sira_numarasi}. siradaki gorev silindi.")
+                return
+        print(f"{sira_numarasi}. siradaki gorev bulunamadi.")
+    except ValueError:
+        print('Gecersiz! Lutfen gecerli bir numara girin.')
+
+# Menü
+while True:
+    print('\nMENU')
+    print('1 - Yeni görev ekle')
+    print('2 - Bir görevi tamamla')
+    print('3 - Bir görevi sil')
+    print('4 - Tamamlanmis gorevleri listele')
+    print('5 - Tum gorevleri listele')
+    print('6 - QUIT')
+
+    secim = input('\nNe yapmak istersiniz (1-6): ')
+    if secim == "1":
+        gorev_adi = input("Yeni gorev adini giriniz: ")
+        yeni_gorev_ekle(gorev_adi)
+    elif secim == "2":
+        gorev_tamamla()
+    elif secim == "3":
+        gorev_sil()
+    elif secim == "4":
+        tamamlanmis_gorevleri_listele()
+    elif secim == "5":
+        tum_gorevleri_listele()
+    elif secim == "6":
+        print("Programdan cikiliyor...")
+        break
+    else:
+        print("Gecersiz secim! Lutfen 1-6 arasinda bir secenek giriniz.")