def corpus_stats_basic(df, verbose=True):
    """Number of Documents and Tokens in the loaded Corpus file

    Args:
        df: pandas dataframe obtained from pd.load_csv
        verbose: prints instead of just returning the values
    """
    
    n_docs = df['doc_id'].nunique()
    n_toks = df['tok_id'].nunique()
    n_annotators = df['annotator'].nunique()
    
    if verbose:
        print('Documents: {}\nTokens: {}\nAnnotators: {}'
              .format(n_docs, n_toks, n_annotators))
    
    return (n_docs, n_toks, n_annotators)