pyarrow.schema¶

pyarrow.schema(fields, metadata=None)¶

Construct pyarrow.Schema from collection of fields.

Parameters:

fieldsiterable of Fields or tuples, or mapping of strings to DataTypes
metadatadict, default None: Keys and values must be coercible to bytes.

Returns:

schemapyarrow.Schema

Examples

Create a Schema from iterable of tuples:

>>> import pyarrow as pa
>>> pa.schema([
...     ('some_int', pa.int32()),
...     ('some_string', pa.string()),
...     pa.field('some_required_string', pa.string(), nullable=False)
... ])
some_int: int32
some_string: string
some_required_string: string not null

Create a Schema from iterable of Fields:

>>> pa.schema([
...     pa.field('some_int', pa.int32()),
...     pa.field('some_string', pa.string())
... ])
some_int: int32
some_string: string

pyarrow.field

pyarrow.from_numpy_dtype