ArrowNumpySchema

class lsst.daf.butler.formatters.parquet.ArrowNumpySchema(numpy_dtype: np.dtype)

Bases: object

Wrapper class for a schema for a numpy ndarray.

Parameters

numpy_dtypenumpy.dtype

Numpy dtype to convert.

Attributes Summary

schema

Methods Summary

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

Attributes Documentation

schema

Methods Documentation

classmethod from_arrow(schema: Schema) → ArrowNumpySchema

Convert an arrow schema into an ArrowNumpySchema.

Parameters

schemapyarrow.Schema

Pyarrow schema to convert.

Returns

numpy_schemaArrowNumpySchema

Converted arrow numpy schema.

to_arrow_astropy_schema() → ArrowAstropySchema

Convert to an ArrowAstropySchema.

Returns

astropy_schemaArrowAstropySchema

Converted arrow astropy schema.

to_arrow_schema() → Schema

Convert to a pyarrow.Schema.

Returns

arrow_schemapyarrow.Schema

Converted pyarrow schema.

to_dataframe_schema() → DataFrameSchema

Convert to a DataFrameSchema.

Returns

dataframe_schemaDataFrameSchema

Converted dataframe schema.