diff --git a/fili_week3.py b/fili_week3.py
new file mode 100644
index 0000000..bad1ecd
--- /dev/null
+++ b/fili_week3.py
@@ -0,0 +1,89 @@
+tasks=[]
+
+# add a task
+def add_task(tasks):
+    task_name = input("Enter task: ")
+    sequence_num = len(tasks) + 1
+    tasks.append({'id': sequence_num, 'name': task_name, 'status': 'Pending'})
+    print("Task added.")
+
+# complete a task
+def complete_task(tasks):
+    if not tasks:
+        print("No tasks.")
+        return
+    for task in tasks:
+        print(f"{task['id']}. {task['name']} - {task['status']}")
+    sequence_num = int(input("Enter task ID to complete: "))
+    for task in tasks:
+        if task['id'] == sequence_num:
+            task['status'] = 'Completed'
+            print("Task completed.")
+            return
+    print("Task not found.")
+
+#list all completed tasks
+def list_completed_tasks(tasks):
+
+    if not tasks:
+        print("No tasks available.")
+        return
+
+    completed_tasks = [task for task in tasks if task['status'] == 'Completed']
+    if not completed_tasks:
+        print("No tasks completed.")
+    else:
+        print("\nCompleted Tasks:")
+        for task in completed_tasks:
+            print(f"{task['sequence_number']}. {task['task_name']}")    
+
+# delete a task.
+def delete_task(tasks):
+    if not tasks:
+        print("No tasks.")
+        return
+    for task in tasks:
+        print(f"{task['id']}. {task['name']} - {task['status']}")
+    sequence_num = int(input("Enter task ID to delete: "))
+    for task in tasks:
+        if task['id'] ==sequence_num:
+            task['status'] = 'Deleted'
+            print("Task deleted.")
+            return
+    print("Task not found.")
+
+# show all tasks.
+def show_tasks(tasks):
+    if not tasks:
+        print("No tasks.")
+        return
+    print("\nTasks:")
+    for task in tasks:
+        print(f"{task['id']}. {task['name']} - {task['status']}")
+
+# main function.
+def main():
+    tasks = []
+    while True:
+        print("\nTask Manager:")
+        print("1. Add")
+        print("2. Complete")
+        print("3. Delete")
+        print("4. Show")
+        print("5. Exit")
+        choice = input("Choice: ")
+        if choice == '1':
+            add_task(tasks)
+        elif choice == '2':
+            complete_task(tasks)
+        elif choice == '3':
+            delete_task(tasks)
+        elif choice == '4':
+            show_tasks(tasks)
+        elif choice == '5':
+            print("Bye!")
+            break
+        else:
+            print("Invalid.")
+
+