etlantic-polars 0.14.0

Polars dataframe execution plugin for ETLantic.

etlantic-polars

Polars dataframe plugin and Polars portable transform compiler for ETLantic 0.14.

pip install 'etlantic==0.14.0' 'etlantic-polars==0.14.0'
# optional Arrow interchange
pip install 'etlantic-polars[arrow]==0.14.0'

Dataframe plugin

Supports eager DataFrame execution and LazyFrame preservation until an explicit collection boundary declared in the PipelinePlan.

Entry point: etlantic.dataframe_plugins → etlantic_polars:create_plugin.

Portable transform compiler (0.14)

Claims dtcs:profile/portable-relational-kernel/1 and dtcs:profile/portable-relational/1. Executes kernel actions plus join, union, aggregate, sort, distinct, deduplicate, and limit without a native @implementation("polars").

from etlantic import Profile
from etlantic_polars import create_transform_compiler

Profile(
    name="polars-portable",
    dataframe_engine="polars",
    portable_transform_policy="require",  # or prefer / native
)
compiler = create_transform_compiler()
print(compiler.info.name, sorted(compiler.info.capabilities.profiles))

Entry point: etlantic.transform_compilers → etlantic_polars:create_transform_compiler.

Runnable example: examples/portable_polars_kernel.py in the ETLantic repo.

Windows, complex-values, conversion, and Rich Portable Analytics compiler claims remain later (0.15+). See the compiler protocol and compatibility matrix.