Rolling.mean(*args, **kwargs)[source]#

Calculate the rolling mean.

  • numeric_only (bool, default False (Not supported yet)) –

    Include only float, int, boolean columns.

    New in version 1.5.0(pandas).

  • engine (str, default None (Not supported yet)) –

    • 'cython' : Runs the operation through C-extensions from cython.

    • 'numba' : Runs the operation through JIT compiled code from numba.

    • None : Defaults to 'cython' or globally setting compute.use_numba

      New in version 1.3.0(pandas).

  • engine_kwargs (dict, default None (Not supported yet)) –

    • For 'cython' engine, there are no accepted engine_kwargs

    • For 'numba' engine, the engine can accept nopython, nogil and parallel dictionary keys. The values must either be True or False. The default engine_kwargs for the 'numba' engine is {'nopython': True, 'nogil': False, 'parallel': False}

      New in version 1.3.0(pandas).


Return type is the same as the original object with np.float64 dtype.

Return type

Series or DataFrame

See also


Calling rolling with Series data.


Calling rolling with DataFrames.


Aggregating mean for Series.


Aggregating mean for DataFrame.


See window.numba_engine and enhancingperf.numba for extended documentation and performance considerations for the Numba engine.


The below examples will show rolling mean calculations with window sizes of two and three, respectively.

>>> s = pd.Series([1, 2, 3, 4])  
>>> s.rolling(2).mean()  
0    NaN
1    1.5
2    2.5
3    3.5
dtype: float64
>>> s.rolling(3).mean()  
0    NaN
1    NaN
2    2.0
3    3.0
dtype: float64

This docstring was copied from pandas.core.window.rolling.Rolling.