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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def verify_checksum(*lines):
 """Verify the checksum of one or more TLE lines. Raises `ValueError` if any of the lines fails its checksum, and includes the failing line in the error message. """

    for line in lines:
        checksum = line[68:69]
        if not checksum.isdigit():
            continue
        checksum = int(checksum)
        computed = compute_checksum(line)
        if checksum != computed:
            complaint = ('TLE line gives its checksum as {}'
                         ' but in fact tallies to {}:\n{}')
            raise ValueError(complaint.format(checksum, computed, line))