def read_file(*path_parts, **kwargs):
    path = os.path.join(*path_parts)
    logger.debug('reading file from %s', path)
    with open(path, **kwargs) as fp:
        return fp.read()
Calling L{checkers.SSHPublicKeyChecker.requestAvatarId} with
dataset/ETHPy150Open KeepSafe/ks-email-parser/email_parser/fs.py/read_file--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/conch/test/test_checkers.py/SSHPublicKeyCheckerTests.test_credentialsWithBadKey