DOC: na_fvalues argument for read_csv not documented in docstring

[jorisvandenbossche]

[jreback]

this is not a public parameter. It is internally computed and is just a passed thru variable. User cannot specify it.

[jorisvandenbossche]

Yep, I also just concluded that, but then we should just remove it from the signature of read_csv? As it is calculated inside TextFileReader, this passed value will always be overwritten?

[jreback]

not sure what you mean. its a constructed value passed the the actual reader engine (python/c) which are not public.

[jorisvandenbossche]

See the title, I am talking about read_csv:

In [20]: pd.read_csv?
Signature: pd.read_csv(filepath_or_buffer, sep=',', dialect=None, compression='infer', doublequote=True, escapechar=None, quotechar='"', quoting=0, skipinitialspace=False, lineterminator=None, header='infer', index_col=None, names=None, prefix=None, skiprows=None, skipfooter=None, skip_footer=0, na_values=None, na_fvalues=None, true_values=None, false_values=None, delimiter=None, converters=None, dtype=None, usecols=None, engine=None, delim_whitespace=False, as_recarray=False, na_filter=True, compact_ints=False, use_unsigned=False, low_memory=True, buffer_lines=None, warn_bad_lines=True, error_bad_lines=True, keep_default_na=True, thousands=None, comment=None, decimal='.', parse_dates=False, keep_date_col=False, dayfirst=False, date_parser=None, memory_map=False, float_precision=None, nrows=None, iterator=False, chunksize=None, verbose=False, encoding=None, squeeze=False, mangle_dupe_cols=True, tupleize_cols=False, infer_datetime_format=False, skip_blank_lines=True)

Will do a PR to remove it