BSN valid

# maakt gebruik van stdnum module;   conda install -c hargup/label/pypi python-stdnum
import numpy as np
import pandas as pd
import os
from stdnum.nl import bsn
#------INITIALISATI

def BSN_is_valid(tbsn):
    from stdnum.nl import bsn   
    if bsn.is_valid(tbsn) :
        return 1
    else:
        return 0