polars 1.38.1

Blazingly fast DataFrame library

Stars: 37459, Watchers: 37459, Forks: 2624, Open Issues: 2731

The pola-rs/polars repo was created 5 years ago and the last code push was 3 hours ago.
The project is extremely popular with a mindblowing 37459 github stars!

How to Install polars

You can install polars using pip

pip install polars

or add it to a project with poetry

poetry add polars

Package Details

Author

None

License

Copyright (c) 2025 Ritchie Vink Some portions Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:
    
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
    </dd>

Homepage

None

PyPi:

https://pypi.org/project/polars/

Documentation:

https://docs.pola.rs/api/python/stable/reference/index.html

GitHub Repo:

https://github.com/pola-rs/polars

Classifiers

• Scientific/Engineering

Related Packages

Errors

A list of common polars errors.

Code Examples

Here are some polars code examples and snippets.

GitHub Issues

The polars package has 2731 open issues on GitHub

• Breaking behavior when doing a Date is_between on a pl.scan_parquet frame
• pl.from_dicts(..., schema=has_enums, strict=True) silently nulls invalid Enum values
• fix(rust): Fix SchemaError when mixing Boolean and float types
• Invitation to provide feedback on New Parquet Encoding: Adaptive Lossless Floating Point Compression
• perf: Run elementwise CSEE for the streaming engine
• Invitation to add Polars Parquet implementation to the Parquet implementation status web page
• Improve error message: ComputeError: dtypes don't match, got struct[4], expected: struct[4]
• feat: Allow empty LazyFrame in LazyFrame.group_by(...).map_groups
• Allow empty LazyFrame in LazyFrame.group_by(...).map_groups
• #[cfg(feature = "async")] features (collect_batches) completely missing in 0.52.0 crate
• dtype_of raises InvalidOperationError for int / float literals
• Inconsistent access to columns in Polars at Python level and SQL interpreter level from v1.37
• min_by / max_by return null when by= is nested type
• fix(rust): Fix lazy evaluation of replace_strict by making it fallible
• fix(python): Recognize pd.Timestamp values in Series constructor

See more issues on GitHub