@property<EOL><INDENT>def resources(self):<DEDENT>
with open(os.path.join(EULER_DATA, '<STR_LIT>')) as data_file:<EOL><INDENT>data = json.load(data_file)<EOL><DEDENT>problem_num = str(self.num)<EOL>if problem_num in data:<EOL><INDENT>files = data[problem_num]<EOL>return files if isinstance(files, list) else [files]<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>
Returns a list of resources related to the problem (or None)