transferred

transferred

The most convenient batch data transfer tool.

transferred moves table data between systems. Blazing fast, no transformations supported — hand them over to your Data Warehouse.

Install

pip install transferred

Requires Python 3.14.

Usage

from pathlib import Path

from transferred import FilesDestination, Parquet, PostgresSource, Transfer

source = PostgresSource(
    "postgres://user:pass@localhost:5432/db",
    table="public.orders",
)
destination = FilesDestination(
    Path("orders/"),
    format=Parquet(compression="zstd"),
)

report = Transfer(source, destination).run()

print(report)
# RunReport:
#   rows: 10,000,000
#   written: 64.98 MiB
#   duration: 3s 379ms
#   written objects:
#     orders/part-00001.parquet

That output is a real run: 10M rows of five columns out of a local Postgres, in one process, peaking at 137 MiB resident — interpreter included. docs/DLT_COMPARISON.md measures the same legs against duckdb and dlt on a wider table.

More in examples/.

Supported

Sources:

  • Parquet file — FilesSource
  • Postgres table — PostgresSource
  • DataFrames — polars or pandas DataFrame, a duckdb result, a pa.Table, pyarrow's RecordBatch or RecordBatchReader
  • Python iterables of dict / @dataclass / pydantic.BaseModel (requires pip install transferred[iterable])

Destinations:

  • Parquet file — FilesDestination (zstd / snappy / uncompressed)
  • Postgres table — PostgresDestination (full replace, swapped in one transaction)

BigQuery, S3/GCS and incremental loads land later. See PLAN.md.

Promises

  • ✅ Make data transfers as simple as it could be
  • 🚧 Enforce best practices by default
  • 🚧 Blazing fast
  • ✅ No OOMs!

License

MIT. See LICENSE.

Project links

Data verified by PyPI on Aug 18, 2026
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Key dates

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  • Released:
Newer release available (0.1.3)

1 maintainer

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Avatar for skatromb from gravatar.com skatromb

Credits

Author: Vania Livadnyi

GitHub Statistics

Data verified by PyPI on Aug 18, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
View SPDX License List

Requires

Python >=3.14

Provides Extra

arrow iterable

Tags

data-transfer etl arrow parquet

Classifiers

Report project as malware

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0.1.3

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