def get_indexer_by_file_extension(ext):
if ext == "<STR_LIT>" or ext == "<STR_LIT>":<EOL><INDENT>return index_genome_alignment_by_locus<EOL><DEDENT>else:<EOL><INDENT>raise ValueError("<STR_LIT>" + str(ext))<EOL><DEDENT>
Find right indexer using file extension.