csvw.frictionless
Functionality to convert tabular data in Frictionless Data Packages to CSVW.
We translate [table schemas](https://specs.frictionlessdata.io/table-schema/) defined for [data resources](https://specs.frictionlessdata.io/data-resource/) in a [data package](https://specs.frictionlessdata.io/data-package/) to a CVSW TableGroup.
This functionality can be used together with the frictionless describe command to add CSVW metadata to “raw” CSV tables.
- class csvw.frictionless.DataPackage(spec, directory=None)[source]
Metadata according to the frictionless spec.
- csvw.frictionless.convert_column_spec(spec)[source]
https://specs.frictionlessdata.io/table-schema/#field-descriptors
- Parameters:
spec (
dict[str,typing.Any]) –- Return type:
dict[str,typing.Any]- Returns:
- csvw.frictionless.convert_foreignKey(rsc_name, fk, resource_map)[source]
https://specs.frictionlessdata.io/table-schema/#foreign-keys
- Parameters:
rsc_name (
str) –fk (
dict) –resource_map (
dict) –
- Return type:
dict[str,typing.Any]
- csvw.frictionless.convert_table_schema(rsc_name, schema, resource_map)[source]
- Parameters:
rsc_name – name property of the resource the schema belongs to. Needed to resolve self-referential foreign keys.
schema – dict parsed from JSON representing a frictionless Table Schema object.
resource_map – dict mapping resource names to resource paths, needed to convert foreign key constraints.
- Returns:
dict suitable for instantiating a csvw.metadata.Schema object.