DataFrameSchema

class lsst.daf.butler.formatters.parquet.DataFrameSchema(dataframe: pd.DataFrame)

Bases: object

Wrapper class for a schema for a pandas DataFrame.

Parameters:

dataframepandas.DataFrame

Dataframe to turn into a schema.

Attributes Summary

schema

Methods Summary

from_arrow(schema)	Convert an arrow schema into a DataFrameSchema.
to_arrow_astropy_schema()	Convert to an ArrowAstropySchema.
to_arrow_numpy_schema()	Convert to an ArrowNumpySchema.
to_arrow_schema()	Convert to an arrow schema.

Attributes Documentation

schema

Methods Documentation

classmethod from_arrow(schema: Schema) → DataFrameSchema

Convert an arrow schema into a DataFrameSchema.

Parameters:

schemapyarrow.Schema

The pyarrow schema to convert.

Returns:

dataframe_schemaDataFrameSchema

to_arrow_astropy_schema() → ArrowAstropySchema

Convert to an ArrowAstropySchema.

Returns:

arrow_astropy_schemaArrowAstropySchema

to_arrow_numpy_schema() → ArrowNumpySchema

Convert to an ArrowNumpySchema.

Returns:

arrow_numpy_schemaArrowNumpySchema

to_arrow_schema() → Schema

Convert to an arrow schema.

Returns:

arrow_schemapyarrow.Schema