def __annotate_sequence_with_quality(seq, q_line_parts):
if q_line_parts[<NUM_LIT:1>] != seq.name:<EOL><INDENT>raise MAFError("<STR_LIT>" + seq.name +<EOL>"<STR_LIT>" +<EOL>str(q_line_parts[<NUM_LIT:1>]) + "<STR_LIT>")<EOL><DEDENT>if len(q_line_parts[<NUM_LIT:2>]) != len(seq):<EOL><INDENT>raise MAFError("<STR_LIT>" +<EOL>"<STR_LIT>" + str(len(seq)) + "<STR_LIT>" +<EOL>"<STR_LIT>" + str(len(q_line_parts[<NUM_LIT:2>])) + "<STR_LIT>" +<EOL>"<STR_LIT>")<EOL><DEDENT>seq.meta_data[QUALITY_META_KEY] = q_line_parts[<NUM_LIT:2>]<EOL>
Extract meta data from pre-tokenized maf q-line and populate sequence.

    q -- quality information about an aligned base in a species. Two fields after
         the 'q': the source name and a single digit for each nucleotide in its
         sequence (0-9 or F, or - to indicate a gap).