A read pair is a 2-tuple read or sequence along with its respective frequency.
| parse_pairs(stream[, delimiter]) | Parses a stream of read-sequence frequency pairs into a dict. |
| get_pairs_from_file(filename[, delimiter]) | Opens and parses a file into read-sequence frequency pairs. |
| write_pairs(read_pairs, stream[, delimiter]) | Writes the read-freq pairs out to the stream. |
| write_pairs_to_file(read_pairs, filename[, ...]) | Writes the read-freq pairs out to the specified file. |