How do I parallelize a simple Python loop?

Question

This is probably a trivial question, but how do I parallelize the following loop in python?

# setup output lists
output1 = list()
output2 = list()
output3 =          


        

Answer 1

Let's say we have an async function

async def work_async(self, student_name: str, code: str, loop):
"""
Some async function
"""
    # Do some async procesing    

That needs to be run on a large array. Some attributes are being passed to the program and some are used from property of dictionary element in the array.

async def process_students(self, student_name: str, loop):
    market = sys.argv[2]
    subjects = [...] #Some large array
    batchsize = 5
    for i in range(0, len(subjects), batchsize):
        batch = subjects[i:i+batchsize]
        await asyncio.gather(*(self.work_async(student_name,
                                           sub['Code'],
                                           loop)
                       for sub in batch))