pandas.Series.sparse.npoints#

Series.sparse.npoints[source]#

The number of non- fill_value points.

This property returns the number of elements in the sparse series that are not equal to the fill_value. Sparse data structures store only the non-fill_value elements, reducing memory usage when the majority of values are the same.

See also

Series.sparse.to_dense: Convert a Series from sparse values to dense.
Series.sparse.fill_value: Elements in data that are fill_value are not stored.
Series.sparse.density: The percent of non- fill_value points, as decimal.

Examples

>>> from pandas.arrays import SparseArray
>>> s = SparseArray([0, 0, 1, 1, 1], fill_value=0)
>>> s.npoints
3