Environment Variables#

The following environment variables can be used to affect the behavior ofPyArrow.

ARROW_HOME#

The base path to the PyArrow installation. This variable overrides thedefault computation of library paths in introspection functions suchasget_library_dirs().

ARROW_PRE_0_15_IPC_FORMAT#

If this environment variable is set to a non-zero integer value, the PyArrowIPC writer will default to the pre-0.15 Arrow IPC format.This behavior can also be enabled usingIpcWriteOptions.use_legacy_format.

ARROW_PRE_1_0_METADATA_VERSION#

If this environment variable is set to a non-zero integer value, the PyArrowIPC writer will write V4 Arrow metadata (corresponding to pre-1.0 Arrowwith an incompatible Union data layout).This behavior can also be enabled usingIpcWriteOptions.metadata_version.

PKG_CONFIG#

The path to thepkg-config executable. This may be required forproper functioning of introspection functions such asget_library_dirs() ifpkg-config is not available on the systemPATH.