rinex.py 文件源码

def fname2date(rinex_fname):
    """
    Return the :class:`datetime` associated with the RIENX file
    *rinex_fname* named according to the standard convention.
    """
    basename = os.path.basename(rinex_fname)
    doy = basename[4:7]
    daily_or_hour = basename[7]
    yy = basename[9:11]
    dt = datetime.strptime(doy + yy, '%j%y')
    if daily_or_hour == '0':
        return dt
    elif daily_or_hour in [chr(x) for x in range(ord('a'), ord('x') + 1)]:
        return dt + timedelta(hours=ord(daily_or_hour) - ord('a'))
    else:
        raise ValueError('could not parse date from RINEX file name '
                         '{}'.format(rinex_fname))