Task Scheduler

Create the Scheduler

Create a file named task_scheduler.py and add the following code:

pythonCopy codeimport time
import json
import os
from threading import Thread
from datetime import datetime, timedelta

class TaskScheduler:
def __init__(self, filename='tasks.json'):
    self.filename = filename
    self.tasks = self.load_tasks()
    self.running = True
    self.thread = Thread(target=self.run_tasks)
    self.thread.start()
def load_tasks(self):
    if os.path.exists(self.filename):
        with open(self.filename, 'r') as file:
            return json.load(file)
    return []
def save_tasks(self):
    with open(self.filename, 'w') as file:
        json.dump(self.tasks, file)
def add_task(self, task_name, run_time):
    task = {
        'name': task_name,
        'run_time': run_time
    }
    self.tasks.append(task)
    self.save_tasks()
    print(f"Task '{task_name}' scheduled for {run_time}.")
def view_tasks(self):
    if not self.tasks:
        print("No tasks scheduled.")
        return
    print("\nScheduled Tasks:")
    for i, task in enumerate(self.tasks, 1):
        print(f"{i}. {task['name']} - Scheduled for: {task['run_time']}")
def run_tasks(self):
    while self.running:
        current_time = datetime.now().strftime('%Y-%m-%d %H:%M')
        for task in self.tasks:
            if task['run_time'] == current_time:
                print(f"Running task: {task['name']}")
                self.tasks.remove(task)
                self.save_tasks()
        time.sleep(60)  # Check every minute
def stop(self):
    self.running = False
    self.thread.join()
def main():
scheduler = TaskScheduler()

while True:
    print("\nTask Scheduler")
    print("1. Add Task")
    print("2. View Tasks")
    print("3. Quit")
    
    choice = input("Choose an option (1-3): ")
    if choice == '1':
        task_name = input("Enter the task name: ")
        run_time = input("Enter the run time (YYYY-MM-DD HH:MM): ")
        scheduler.add_task(task_name, run_time)
    elif choice == '2':
        scheduler.view_tasks()
    elif choice == '3':
        scheduler.stop()
        print("Exiting the task scheduler.")
        break
    else:
        print("Invalid choice. Please try again.")
if __name__ == "__main__":
main()

Step 2: Running the Task Scheduler

1. Open your terminal (or command prompt).
2. Navigate to the directory where you saved task_scheduler.py.
3. Run the script using the command:bashCopy codepython task_scheduler.py

How It Works

• Task Scheduling: You can add tasks by specifying the name and the time to run (in YYYY-MM-DD HH:MM format). Tasks will be stored in a JSON file (tasks.json).
• Task Execution: The scheduler checks every minute to see if any tasks need to be executed based on the current time.
• Threading: A separate thread runs the task-checking loop, allowing the main program to accept user input simultaneously.

Example Usage

1. Add a Task: Choose option 1, enter a task name, and specify the time you want it to run.
2. View Scheduled Tasks: Choose option 2 to see all your scheduled tasks.
3. Quit: Choose option 3 to exit the scheduler.