def load_core_file(core_fp):
core = {}<EOL>with open(core_fp) as in_f:<EOL><INDENT>for line in in_f.read().splitlines():<EOL><INDENT>if not line.startswith("<STR_LIT:#>"):<EOL><INDENT>otu_id, tax = line.split("<STR_LIT:\t>")<EOL>core[otu_id] = oc.otu_name(ast.literal_eval(tax))<EOL><DEDENT><DEDENT><DEDENT>return core<EOL>
For core OTU data file, returns Genus-species identifier for each data
entry.
:type core_fp: str
:param core_fp: A file containing core OTU data.
:rtype: str
:return: Returns genus-species identifier based on identified taxonomical
         level.