Added explicit dask data type resolution

print('Reading file')

# Read file in using dask

ddf_inter = dd.read_csv(args.intersect, sep='\t', header=None, names=['chrom','start','end','overlap_1','key','a_name','b_name','count'])

ddf_inter = dd.read_csv(args.intersect, sep='\t', header=None, names=['chrom','start','end','overlap_1','key','a_name','b_name','count'], dtype={'overlap_1': 'float64'})

# Find number of files

numfiles = ddf_inter['b_name'].max().compute()

if isinstance(numfiles, str):

    print('Detected single file, reloading table')

    numfiles = 1

    ddf_inter = dd.read_csv(args.intersect, sep='\t', header=None, names=['chrom','start','end','overlap_1','overlap_2','key','name','count'])

    ddf_inter = dd.read_csv(args.intersect, sep='\t', header=None, names=['chrom','start','end','overlap_1','overlap_2','key','name','count'], dtype={'overlap_1': 'float64', 'overlap_2': 'float64'})

print('Number of files: ' + str(numfiles))