polars.LazyFrame.dtypes

property LazyFrame.dtypes: list[DataType]

Get the column data types.

Returns:

list of DataType

A list containing the data type of each column in order.

Warning

Determining the data types of a LazyFrame requires resolving its schema, which is a potentially expensive operation. Using collect_schema() is the idiomatic way to resolve the schema. This property exists only for symmetry with the DataFrame class.

See also

collect_schema

Schema.dtypes

Examples

>>> lf = pl.LazyFrame(
...     {
...         "foo": [1, 2, 3],
...         "bar": [6.0, 7.0, 8.0],
...         "ham": ["a", "b", "c"],
...     }
... )
>>> lf.dtypes  
[Int64, Float64, String]