multiprocessing and python code

Question

the execution of my python code is too slow, I have 7 processors and python uses only one, I just discovered the multiprocessing option but I have no idea how to use it, so could you modify my following code using this option?

from itertools import combinations

def New5(A,C5):
    d=True
    for a in A:
        if(d==True):
            d=(a not in C5)
    return d

def refcomb10(h):
    T=[]
    C5={0}
    b=0
    C10=combinations(range(h),10)
    for S in C10:
        A=combinations(S,5)
        if(New5(A,C5)):
            A=combinations(S,5)
            for a in A:
                C5.update({a})
            T.append(S)
            b+=1
            print(b,S)
    return([T,C5])

U=refcomb10(60)

Excuse my english

Answer 1

You probably don't need to multithread to fix your performance problem. These improvements may be more helpful:

• remove print(b,S)
• remove the second A=combinations(S,5) , if possible

• replace

    for a in A: C5.append(a) 

  with

    C5.extend(A) 

• profile your code, perhaps like this: https://docs.python.org/2/library/profile.html . Find what function is slow and try to make it faster.