from collections import namedtuple
Reg = namedtuple("Reg", "addr tag kind")

def load_map(path, site):
    import openpyxl
    wb = openpyxl.load_workbook(path, read_only=True)
    sheet = wb[site] if site in wb.sheetnames else wb.active
    out = []
    for row in sheet.iter_rows(min_row=2, values_only=True):
        if not row or row[0] is None:
            continue
        out.append(Reg(int(row[0]), str(row[1]), str(row[2] or "HR")))
    return out