def humanize(iso639):
for i, element in enumerate(LANGUAGES):<EOL><INDENT>if element[<NUM_LIT:1>] == iso639 or element[<NUM_LIT:2>] == iso639:<EOL><INDENT>return element[<NUM_LIT:0>]<EOL><DEDENT><DEDENT>return None<EOL>
Converts ISO639 language identifier to the corresponding (human readable) language name.