DataFrame.select_dtypes(include=None, exclude=None)

DataFrame.plot.kde(**kwds)

DataFrame.diff(periods=1, axis=0)

DataFrame.convert_objects(convert_dates=True, convert_numeric=False, convert_timedeltas=True, copy=True)

DataFrame.var(axis=None, skipna=None, level=None, ddof=1, numeric_only=None, **kwargs)

DataFrame.lt(other, axis='columns', level=None)

DataFrame.truediv(other, axis='columns', level=None, fill_value=None)

DataFrame.to_msgpack(path_or_buf=None, encoding='utf-8', **kwargs)

DataFrame.prod(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)

DataFrame.add_suffix(suffix)