pyarrow.dataset.OrcFileFormat

class pyarrow.dataset.OrcFileFormat

Bases: FileFormat

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)

equals(self, OrcFileFormat other)

Parameters:

inspect(self, file[, filesystem])

Infer the schema of a file.

make_fragment(self, file[, filesystem])

Make a FileFragment from a given file.

make_write_options(self)

Attributes

default_extname

default_fragment_scan_options

default_extname
default_fragment_scan_options
equals(self, OrcFileFormat other)
Parameters:
otherpyarrow.dataset.OrcFileFormat
Returns:
True
inspect(self, file, filesystem=None)

Infer the schema of a file.

Parameters:
filefile-like object, path-like or str

The file or file path to infer a schema from.

filesystemFilesystem, optional

If filesystem is given, file must be a string and specifies the path of the file to read from the filesystem.

Returns:
schemaSchema

The schema inferred from the file

make_fragment(self, file, filesystem=None, Expression partition_expression=None)

Make a FileFragment from a given file.

Parameters:
filefile-like object, path-like or str

The file or file path to make a fragment from.

filesystemFilesystem, optional

If filesystem is given, file must be a string and specifies the path of the file to read from the filesystem.

partition_expressionExpression, optional

An expression that is guaranteed true for all rows in the fragment. Allows fragment to be potentially skipped while scanning with a filter.

Returns:
fragmentFragment

The file fragment

make_write_options(self)