multiprocessing.pool.map and function with two arguments

Question

I am using multiprocessing.Pool()

here is what i want to Pool:

def insert_and_process(file_to_process,db):
    db = DAL(\"path_to_mysql\         


        

Answer 1

Using

params=[(x,y) for x in X for y in Y]

you create a full copy of x and y, and that may be slower than using

from itertools import repeat
P.map(insert_and_process,zip(file_list,repeat(db)))