def __str__(self):
retval = ('<STR_LIT>'<EOL>.format(self.running_version, self.package_name,<EOL>self.available_version))<EOL>if self.release_date:<EOL><INDENT>retval += '<STR_LIT>'.format(<EOL>pretty_date(self.release_date))<EOL><DEDENT>else:<EOL><INDENT>retval += '<STR_LIT>'<EOL><DEDENT>return retval<EOL>
Return a printable UpdateResult string.