Sample python script for asynchronous calls with batching

pythonSampleAsyncBatch.py

#!/usr/bin/env python3
import asyncio

import aiohttp
from aiohttp import ClientSession

async def testCall(val,session):
    print("start"+str(val))
    t1 = await session.request("GET",'http://python.org/'+str(val))
    c = await t1.text()
    print(c[4:12])
    print(val)

def batch(iterable, n=1):
    l = len(iterable)
    for ndx in range(0, l, n):
        yield iterable[ndx:min(ndx + n, l)]
        
async def getTest():
    async with aiohttp.ClientSession() as mySession:
        for someBatch in batch(range(0,100),10):
            tasks = []
            for x in someBatch:
                task = asyncio.create_task(testCall(x,mySession))
                tasks.append(task)
            await asyncio.wait(tasks)
        await mySession.close()


loop = asyncio.get_event_loop()
loop.run_until_complete(getTest())