hydra.tabular module

A simple, untyped tabular data model, suitable for CSVs and TSVs.

class hydra.tabular.ColumnType(name: ColumnName, type: Type)

Bases: object

A column type, consisting of a name and a value type.

class Builder(_name: 'hydra.relational.ColumnName' = None, _type: 'hydra.core.Type' = None)

Bases: object

build()

name(name)

type(type)

NAME = Name(value='name')

TYPE = Name(value='type')

TYPE_ = Name(value='hydra.tabular.ColumnType')

static builder()

name: ColumnName

type: Type

with_name(name)

with_type(type)

class hydra.tabular.DataRow(value: T)

Bases: Node[Sequence[Optional[V]]], Generic[V]

A data row, containing optional-valued cells; one per column.

TYPE_ = Name(value='hydra.tabular.DataRow')

class hydra.tabular.HeaderRow(value: T)

Bases: Node[Sequence[str]]

A header row, containing column names (but no types or data).

TYPE_ = Name(value='hydra.tabular.HeaderRow')

class hydra.tabular.Table(header: Annotated[object, 'The optional header row of the table. If present, the header must have the same number of cells as each data row.'], data: Annotated[Sequence[DataRow[V]], 'The data rows of the table. Each row must have the same number of cells.'])

Bases: Generic[V]

A simple table as in a CSV file, having an optional header row and any number of data rows.

class Builder(_header: 'Optional[HeaderRow]' = None, _data: 'Sequence[DataRow[V]]' = None)

Bases: Generic[V]

build()

data(data)

header(header)

DATA = Name(value='data')

HEADER = Name(value='header')

TYPE_ = Name(value='hydra.tabular.Table')

static builder()

data: Annotated[Sequence[DataRow[V]], 'The data rows of the table. Each row must have the same number of cells.']

header: Annotated[object, 'The optional header row of the table. If present, the header must have the same number of cells as each data row.']

with_data(data)

with_header(header)

class hydra.tabular.TableType(name: RelationName, columns: Sequence[ColumnType])

Bases: object

A type definition for a table, including column names and types.

class Builder(_name: 'hydra.relational.RelationName' = None, _columns: 'Sequence[ColumnType]' = None)

Bases: object

build()

columns(columns)

name(name)

COLUMNS = Name(value='columns')

NAME = Name(value='name')

TYPE_ = Name(value='hydra.tabular.TableType')

static builder()

columns: Sequence[ColumnType]

name: RelationName

with_columns(columns)

with_name(name)