Add task.py for mapping tasks to ProcessPoolExecutor

Task is an abstract base class that implements a method for executing sub tasks by the process pool.

Author: Brandon Davis

slacker/task.py

@@ -0,0 +1,15 @@
+from abc import ABC, abstractmethod
+
+from concurrent.futures import ProcessPoolExecutor
+
+class Task(ABC):
+  @abstractmethod
+  def run():
+    pass
+
+def start_task(task):
+  return task.run()
+
+def execute_tasks(tasks):
+  pool = ProcessPoolExecutor()
+  return pool.map(start_task, tasks)