Python is a powerful yet beginner-friendly programming language that allows us to write concise and effective programs. In this blog post, we’ll discuss the process of writing a simple 30-line Python program that performs a specific task.
The program we’ll create will be a basic “to-do list” application. It will allow the user to add, view, and complete tasks. Here’s the code for our 30-line Python to-do list program:
pythonclass TodoList:
def __init__(self):
self.tasks = []
def add_task(self, task):
self.tasks.append(task)
def view_tasks(self):
for index, task in enumerate(self.tasks, start=1):
print(f"{index}. {task}")
def complete_task(self, index):
if 1 <= index <= len(self.tasks):
self.tasks[index-1] = f"[COMPLETED] {self.tasks[index-1]}"
else:
print("Invalid task index.")
# Create a TodoList object
todo_list = TodoList()
# Add some tasks
todo_list.add_task("Learn Python")
todo_list.add_task("Finish project")
todo_list.add_task("Exercise")
# View tasks
print("\nCurrent tasks:")
todo_list.view_tasks()
# Complete a task
task_index = int(input("\nEnter the index of the task you want to complete (1-3): "))
todo_list.complete_task(task_index)
# View updated tasks
print("\nUpdated tasks:")
todo_list.view_tasks()
This program defines a TodoList class that has three methods: add_task(), view_tasks(), and complete_task(). The add_task() method allows us to add new tasks to the list, view_tasks() displays all the tasks, and complete_task() marks a task as completed by modifying its text.
We then create an instance of the TodoList class and use its methods to add some tasks, view them, complete a task, and view the updated list.
With this program, we demonstrate the use of classes and methods in Python, as well as basic input/output operations and list manipulation. It’s a simple yet functional program that can be extended further to include more features, such as task deletion or priority levels.
