def diff(file_, imports):
    'Display the difference between modules in a file and imported modules.'
    modules_not_imported = compare_modules(file_, imports)
    logging.info('The following modules are in {} but do not seem to be imported: {}'.format(file_, ', '.join((x for x in modules_not_imported))))
Display the difference between modules in a file and imported modules.
def diff(file_, imports):
    
    modules_not_imported = compare_modules(file_, imports)
    logging.info('The following modules are in {} but do not seem to be imported: {}'.format(file_, ', '.join((x for x in modules_not_imported))))