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  * __
  * [ pandas.DatetimeIndex ](pandas.DatetimeIndex.html)
  * pandas.Datet... 

#  pandas.DatetimeIndex.freqstr  #

_ property  _ DatetimeIndex.  freqstr  [ [source]
](https://github.com/pandas-
dev/pandas/blob/v2.2.2/pandas/core/indexes/datetimelike.py#L112-L123) #

    

Return the frequency object as a string if itâs set, otherwise None.

Examples

For DatetimeIndex:

    
    
    >>> idx = pd.DatetimeIndex(["1/1/2020 10:00:00+00:00"], freq="D")
    >>> idx.freqstr
    'D'
    

The frequency can be inferred if there are more than 2 points:

    
    
    >>> idx = pd.DatetimeIndex(["2018-01-01", "2018-01-03", "2018-01-05"],
    ...                        freq="infer")
    >>> idx.freqstr
    '2D'
    

For PeriodIndex:

    
    
    >>> idx = pd.PeriodIndex(["2023-1", "2023-2", "2023-3"], freq="M")
    >>> idx.freqstr
    'M'
    

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  * ` DatetimeIndex.freqstr  `

[ __ Show Source
](../../_sources/reference/api/pandas.DatetimeIndex.freqstr.rst.txt)

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