parallel_holdem_calc not working

[RaulBritto]

I'm trying to call parallel_holdem_calc as library call as following:

from holdem_calc import parallel_holdem_calc 
parallel_holdem_calc.calculate(None, True, 1, None, ["8s", "7s", "Ad", "Ac"], False)

But the follow error is launched:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/raul/anaconda3/lib/python3.7/site-packages/holdem_calc/parallel_holdem_calc.py", line 14, in calculate
    return run(hole_cards, n, e, board, filename, verbose)
  File "/home/raul/anaconda3/lib/python3.7/site-packages/holdem_calc/parallel_holdem_calc.py", line 30, in run
    return run_simulation(hole_cards, num, exact, board, deck, verbose)
  File "/home/raul/anaconda3/lib/python3.7/site-packages/holdem_calc/parallel_holdem_calc.py", line 73, in run_simulation
    combined_histograms[(index / num_poker_hands) % num_players][
TypeError: list indices must be integers or slices, not float