handling python files in parallel

ar=[str(x) for x in range(0,5)]

print(*ar)

handles = [open('file'+x, 'w') for x in ar] # not using generator

#https://stackoverflow.com/questions/1747817/create-a-dictionary-with-comprehension

myHandles=dict(zip(ar,handles))

for i in range(1,100):

    myf=str(i%5)

    print("a",i,file=myHandles[myf])