Column.validate(check_obj, head=None, tail=None, sample=None, random_state=None, lazy=False, inplace=False)[source]ΒΆ

Validate a Column in a DataFrame object.

  • check_obj (Union[LazyFrame, DataFrame]) – polars LazyFrame to validate.

  • head (Optional[int, None]) – validate the first n rows. Rows overlapping with tail or sample are de-duplicated.

  • tail (Optional[int, None]) – validate the last n rows. Rows overlapping with head or sample are de-duplicated.

  • sample (Optional[int, None]) – validate a random sample of n rows. Rows overlapping with head or tail are de-duplicated.

  • random_state (Optional[int, None]) – random seed for the sample argument.

  • lazy (bool) – if True, lazily evaluates dataframe against all validation checks and raises a SchemaErrors. Otherwise, raise SchemaError as soon as one occurs.

  • inplace (bool) – if True, applies coercion to the object of validation, otherwise creates a copy of the data.

Return type:

Union[LazyFrame, DataFrame]


validated DataFrame.