Problem with unrecognized argument

When I run the CodeGen, the preprocessing.py it is asking for various arguments and when I pass those argument its showing unrecognized arguments. Below are my codes.
%run codegen_sources/preprocessing/preprocess data/test_dataset 20 python obfuscation 8 500 200 400 roberta False data/bpe/cpp-java-python/vocab False data/bpe/cpp-java-python --1

usage: preprocess.py [-h] [--local LOCAL]
[--local_parallelism LOCAL_PARALLELISM]
[--langs LANGS [LANGS ...]]
[--mode {obfuscation,monolingual,monolingual_functions,obfuscation_functions}]
[--train_splits TRAIN_SPLITS] [--job_mem JOB_MEM]
[--tokenization_timeout TOKENIZATION_TIMEOUT]
[--bpe_timeout BPE_TIMEOUT]
[--train_bpe_timeout TRAIN_BPE_TIMEOUT]
[--bpe_mode {fast,roberta}]
[--fastbpe_use_vocab FASTBPE_USE_VOCAB]
[--fastbpe_vocab_path FASTBPE_VOCAB_PATH]
[--keep_comments KEEP_COMMENTS]
[--fastbpe_code_path FASTBPE_CODE_PATH] [--ncodes NCODES]
[--percent_test_valid PERCENT_TEST_VALID]
input_path
preprocess.py: error: unrecognized arguments: 20 python obfuscation 8 500 200 400 roberta False data/bpe/cpp-java-python/vocab False data/bpe/cpp-java-python --1