Very small and simple task manager

simple_task_manager.py

# -*- coding: utf-8 -*-

import re
import sys

tasks = set()
pattern = re.compile(r"/\w+")

def del_task(text):
    global tasks
    
    tmp_set = {i for i in tasks if text in i}
    if tmp_set:
        if len(tmp_set) > 1:
            print("Exits simular tasks:", "; ".join(list(tmp_set)))
        else:
            tasks -= tmp_set
    else:
        print("Task not found")    
    
actions = {"/exit": "sys.exit()",
           "/add": "tasks.add(text)",
           "/del": "del_task(text)"}

while True:
    text = input("Please, type /add {task}, /del {task} or /exit : ")
    match = pattern.search(text)
    command = match[0] if match else ""
    text = pattern.sub("", text).strip()

    if command in actions:
        eval(actions[command])
    print("\n".join(list(tasks)) if tasks else "")