polars.DataFrame.null_count#
- DataFrame.null_count() DataFrame [source]#
Create a new DataFrame that shows the null counts per column.
Examples
>>> df = pl.DataFrame( ... { ... "foo": [1, None, 3], ... "bar": [6, 7, None], ... "ham": ["a", "b", "c"], ... } ... ) >>> df.null_count() shape: (1, 3) ┌─────┬─────┬─────┐ │ foo ┆ bar ┆ ham │ │ --- ┆ --- ┆ --- │ │ u32 ┆ u32 ┆ u32 │ ╞═════╪═════╪═════╡ │ 1 ┆ 1 ┆ 0 │ └─────┴─────┴─────┘