pandas.expanding_sum¶
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pandas.
expanding_sum
(arg, min_periods=1, freq=None, **kwargs)¶ Expanding sum.
Parameters: arg : Series, DataFrame
min_periods : int, default None
Minimum number of observations in window required to have a value (otherwise result is NA).
freq : string or DateOffset object, optional (default None)
Frequency to conform the data to before computing the statistic. Specified as a frequency string or DateOffset object.
Returns: y : type of input argument