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import sys
# Simple Todo Application
class TodoApp:
def __init__(self):
self.todos = [] # List to store todo items, each as a dict {'task': str, 'completed': bool}
def add_task(self, task):
"""Add a new task to the todo list."""
if task:
self.todos.append({'task': task, 'completed': False})
print(f"Added task: {task}")
else:
print("Task cannot be empty.")
def delete_task(self, index):
"""Delete a task by its index."""
if 0 <= index < len(self.todos):
deleted = self.todos.pop(index)
print(f"Deleted task: {deleted['task']}")
else:
print("Invalid task index.")
def mark_complete(self, index):
"""Mark a task as complete by its index."""
if 0 <= index < len(self.todos):
self.todos[index]['completed'] = True
print(f"Marked as complete: {self.todos[index]['task']}")
else:
print("Invalid task index.")
def list_tasks(self):
"""List all tasks with their status."""
if not self.todos:
print("No tasks available.")
for i, todo in enumerate(self.todos):
status = "Completed" if todo['completed'] else "Pending"
print(f"{i + 1}. {todo['task']} - {status}")
def run(self):
"""Run the todo application in a loop."""
while True:
print("\nTodo App Menu:")
print("1. Add Task")
print("2. Delete Task")
print("3. Mark Task as Complete")
print("4. List Tasks")
print("5. Quit")
choice = input("Enter your choice (1-5): ").strip()
if choice == '1':
task = input("Enter task: ").strip()
self.add_task(task)
elif choice == '2':
self.list_tasks()
try:
index = int(input("Enter task number to delete: ")) - 1
self.delete_task(index)
except ValueError:
print("Invalid input. Please enter a number.")
elif choice == '3':
self.list_tasks()
try:
index = int(input("Enter task number to mark complete: ")) - 1
self.mark_complete(index)
except ValueError:
print("Invalid input. Please enter a number.")
elif choice == '4':
self.list_tasks()
elif choice == '5':
print("Exiting Todo App.")
sys.exit(0)
else:
print("Invalid choice. Please try again.")
if __name__ == "__main__":
app = TodoApp()
app.run() |