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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ngram_diff(args, parser):
 """Outputs the results of performing a diff query."""

    store = utils.get_data_store(args)
    corpus = utils.get_corpus(args)
    catalogue = utils.get_catalogue(args)
    tokenizer = utils.get_tokenizer(args)
    store.validate(corpus, catalogue)
    if args.asymmetric:
        store.diff_asymmetric(catalogue, args.asymmetric, tokenizer,
                              sys.stdout)
    else:
        store.diff(catalogue, tokenizer, sys.stdout)