deephaven.arrow

This module supports conversions between pyarrow tables and Deephaven tables.

read_feather(path)

Reads an Arrow feather file into a Deephaven table.

Parameters:

path (str) – the file path

Return type:

Table

Returns:

a new table

Raises:

DHError –

to_arrow(table, cols=None)

Produces a pyarrow table from a Deephaven table

Parameters:

• table (Table) – the source table

• cols (List[str]) – the source column names, default is None which means including all columns

Return type:

Table

Returns:

a pyarrow table

Raises:

DHError –

to_table(pa_table, cols=None)

Creates a Deephaven table from a pyarrow table.

Parameters:

• pa_table (pa.Table) – the pyarrow table

• cols (List[str]) – the pyarrow table column names, default is None which means including all columns

Return type:

Table

Returns:

a new table

Raises:

DHError –