add a simple todo list app on python folder

python/simple-todo-list-app.py

@@ -0,0 +1,126 @@
+class TodoItem:
+    def __init__(self, description):
+        self.description = description
+        self.completed = False
+
+    def __str__(self) -> str:
+        status = "Done" if self.completed else "Not Done"
+        return f"Description: {self.description} | Status: {status}"
+
+
+class TodoList:
+    def __init__(self):
+        self.items = []
+
+    def create_item(self, description) -> None:
+        new_item = TodoItem(description)
+        self.items.append(new_item)
+
+    def read_item(self, index) -> TodoItem:
+        if 0 <= index < len(self.items):
+            return self.items[index]
+        else:
+            return None
+
+    def update_item(self, index, description, completed=False) -> None:
+        if 0 <= index < len(self.items):
+            item = self.items[index]
+            item.description = description
+            item.completed = completed
+
+    def complete_item(self, index) -> None:
+        if 0 <= index < len(self.items):
+            item = self.items[index]
+            item.completed = True
+
+    def delete_item(self, index) -> None:
+        if 0 <= index < len(self.items):
+            del self.items[index]
+
+    def list_items(self) -> None:
+        for index, item in enumerate(self.items):
+            print(f"Item {index}:\n{item}\n")
+
+
+# Option 1: List all Items
+def app_list_all_items(todoList) -> None:
+    todoList.list_items()
+
+
+# Option 2: Create a new Item
+def app_create_new_item(todoList) -> None:
+    description = input("Enter the item description: ")
+    todoList.create_item(description)
+    print("Item created.")
+
+
+# Option 3: Show an item
+def app_show_item(todoList) -> None:
+    index = int(input("Enter the index of the item you want to show: "))
+    item = todoList.read_item(index)
+    if item:
+        print(item)
+    else:
+        print("Item not found.")
+
+
+# Option 4: Complete an item
+def app_complete_an_item(todoList) -> None:
+    index = int(input("Enter the index of the item you want to complete: "))
+    todoList.complete_item(index)
+    print("Item completed.")
+
+
+# Option 5: Update an item
+def app_update_an_item(todoList) -> None:
+    index = int(input("Enter the index of the item you want to update: "))
+    description = input("Enter the new item description: ")
+    todoList.update_item(index, description)
+    print("Item updated.")
+
+
+# Option 6: Delete an item
+def app_delete_an_item(todoList) -> None:
+    index = int(input("Enter the index of the item you want to delete: "))
+    todoList.delete_item(index)
+    print("Item deleted.")
+
+
+def startApp() -> None:
+    todoList = TodoList()
+    while True:
+        try:
+            menu = """
+            1. list all Items
+            2. create a new Item
+            3. show an item
+            4. complete an item
+            5. update an item
+            6. delete an item
+            what option would you like to select next (0 to exit):
+            """
+            option = int(input(menu))
+
+            if option == 0:
+                print("Goodbye")
+                break
+            elif option == 1:
+                app_list_all_items(todoList)
+            elif option == 2:
+                app_create_new_item(todoList)
+            elif option == 3:
+                app_show_item(todoList)
+            elif option == 4:
+                app_complete_an_item(todoList)
+            elif option == 5:
+                app_update_an_item(todoList)
+            elif option == 6:
+                app_delete_an_item(todoList)
+            else:
+                print("Invalid option. Please enter a valid number.")
+
+        except ValueError:
+            print("Invalid input. Please enter a valid number.")
+
+
+startApp()