etlantic-polars
Polars dataframe plugin and Polars portable transform compiler for ETLantic 0.34.
Note: PyPI Production/Stable classifiers describe this plugin package’s release channel. Core ETLantic 0.34 remains Beta for documented single-tenant pilots — classifiers are not an enterprise SLA.
Install
pip install etlantic-polars
# Optional Arrow interchange:
pip install "etlantic-polars[arrow]"
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
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.
Window V1, complex-type/value, and conversion profiles are available in the current compiler; explicit window frames and Window V2 remain capability-gated. See the compiler protocol and compatibility matrix.
Links
1 maintainer
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