def verifyUpdatewcs(fname):
    """
    Verify the existence of WCSNAME in the file.  If it is not present,
    report this to the user and raise an exception.  Returns True if WCSNAME
    was found in all SCI extensions.
    """
    updated = True
    numsci,extname = count_sci_extensions(fname)
    for n in range(1,numsci+1):
        hdr = fits.getheader(fname, extname=extname, extver=n, memmap=False)
        if 'wcsname' not in hdr:
            updated = False
            break
    return updated
Verify the existence of WCSNAME in the file.  If it is not present,
    report this to the user and raise an exception.  Returns True if WCSNAME
    was found in all SCI extensions.