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# pandas.expanding_count

`pandas.``expanding_count`(arg, freq=None, center=False, time_rule=None)

  Expanding count of number of non-NaN observations.

  Parameters : | arg : DataFrame or numpy ndarray-like freq : None or string alias / date offset object, default=None Frequency to conform to before computing statistic center : boolean, default False Whether the label should correspond with center of window time_rule : Legacy alias for freq
  Returns : | expanding_count : type of caller

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