def phred_13_to_18_sed(self, new_path=None, in_place=True):
<EOL>sed_command = r"""<STR_LIT>"""<EOL>if in_place is True:<EOL><INDENT>sh.sed('<STR_LIT>', sed_command, self.path)<EOL>return self<EOL><DEDENT>if new_path is None: new_fastq = self.__class__(new_temp_path())<EOL>else:                new_fastq = self.__class__(new_path)<EOL>sh.sed(sed_command + "<STR_LIT:U+0020>" + new_fastq, self.path)<EOL>return new_fastq<EOL>
Illumina-1.3 format conversion to Illumina-1.8 format via sed (faster).