opt_split.py

def split_list(l):                      
    results = []                           
    for i in range(1, len(l)):
    results.append((l[:i], l[i:]))                                 
    return results
  
def abs_diff(a):
    l, r = a
    return abs((sum(l)) - sum(r))  
  
def optimal_split(l):
    return min(split_list(l), key=abs_diff)