#!/usr/bin/env python# -*- coding: utf-8 -*-import asyncioimport datetimeimport timefrom random import randint@asyncio.coroutinedef factorial(number):    f = 1    for i in range(2, number+1):        print("Asyncio.Task: Compute factorial(%s)" % (i))        yield from asyncio.sleep(1)        f *= i    print("Asyncio.Task - factorial(%s) = %s" %(number, f))@asyncio.coroutinedef fibonacci(number):    a, b = 0, 1    for i in range(number):        print("Asyncio.Task: Compute fibonacci (%s)" % i)        yield from asyncio.sleep(1)        a, b = b, a + b    print("Asyncio.Task - fibonacci(%s) = %s" % (number, a))@asyncio.coroutinedef binomialCoeff(n, k):    result = 1    for i in range(1, k+1):        result = result * (n-i+1) / i        print("Asyncio.Task: Compute binomialCoeff (%s)" % (i))        yield from asyncio.sleep(1)    print("Asyncio.Task - binomialCoeff(%s , %s) = %s" % (n,k,result))if __name__ == "__main__":    tasks = [asyncio.Task(factorial(10)),             asyncio.Task(fibonacci(10)),             asyncio.Task(binomialCoeff(20, 10))]    loop = asyncio.get_event_loop()    loop.run_until_complete(asyncio.wait(tasks))    loop.close()