numpy.nancumsum()
numpy.nancumsum
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numpy.nancumsum(a, axis=None, dtype=None, out=None)[source] -
Return the cumulative sum of array elements over a given axis treating Not a Numbers (NaNs) as zero. The cumulative sum does not change when NaNs are encountered and leading NaNs are replaced by zeros.
Zeros are returned for slices that are all-NaN or empty.
New in version 1.12.0.
Parameters: a : array_l
