# statsmodels.tsa.holtwinters.HoltWintersResults.predict¶

HoltWintersResults.predict(start=None, end=None)[source]

In-sample prediction and out-of-sample forecasting

Parameters
startint, str, or datetime, optional

Zero-indexed observation number at which to start forecasting, ie., the first forecast is start. Can also be a date string to parse or a datetime type. Default is the the zeroth observation.

endint, str, or datetime, optional

Zero-indexed observation number at which to end forecasting, ie., the first forecast is start. Can also be a date string to parse or a datetime type. However, if the dates index does not have a fixed frequency, end must be an integer index if you want out of sample prediction. Default is the last observation in the sample.

Returns
forecastndarray

Array of out of sample forecasts.