Skip to main content

Asynchronous task scheduler and runner for Python

Project description

BuildStatus Coverage

Task scheduler based on asyncio. Allows max-concurrency and granularity to be specified. Execution results are printed as a Gantt chart.

Sample Usage

from asynctasks.executor import Executor
from asynctasks.executionplan import ExecutionPlan
import asyncio

#create an array of tasks
tasks_dict_array = [{"dependencies": [], "name": "task0"}, {"dependencies": [0], "name": "task1"},
                        {"dependencies": [1], "name": "task2"}, {"dependencies": [0], "name": "task3"},
                        {"dependencies": [], "name": "task4"}, {"dependencies": [], "name": "task5"}]

#define an async function that should be executed for each task
async def print_task(loop, task):
   print("Executing task {}".format(task))
   await asyncio.sleep(0.1)

#create an execution plan for the tasks
plan = ExecutionPlan().from_dict_array(tasks_dict_array)
print("\nBEFORE EXECUTION\n{}".format(plan))

#execute the plan with print_task function and max_concurrency as 2
Executor(plan, 2, 0.01, print_task).trigger_execution()
print("\nAFTER EXECUTION\n{}".format(plan.as_gantt()))

Sample Output

BEFORE EXECUTION
task0 Ready
    task1
        task2
    task3
task4 Ready
task5 Ready

Executing task {'dependencies': [], 'name': 'task0', 'start_time': 1497528994.1246588}
Executing task {'dependencies': [], 'name': 'task4', 'start_time': 1497528994.1246588}
Executing task {'dependencies': [0], 'name': 'task1', 'start_time': 1497528994.236074}
Executing task {'dependencies': [0], 'name': 'task3', 'start_time': 1497528994.2370954}
Executing task {'dependencies': [1], 'name': 'task2', 'start_time': 1497528994.340769}
Executing task {'dependencies': [], 'name': 'task5', 'start_time': 1497528994.3417716}

AFTER EXECUTION
      ....................................................................................................
task0 ...............................
task1                                   .............................
task2                                                                    ................................
task3                                    .............................
task4 ...............................
task5                                                                     ...............................

Project details


Release history Release notifications

This version
History Node

0.1.4

History Node

0.1.3

History Node

0.1.2

History Node

0.1.1

History Node

0.1

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
asynctasks-0.1.4-py3-none-any.whl (7.1 kB) Copy SHA256 hash SHA256 Wheel 3.5 Jun 15, 2017

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page