pandas README

The project's README from github.com/pandas-dev/pandas. As one markdown file: README.md.

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pandas: A Powerful Python Data Analysis Toolkit

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What is it?

pandas is a Python package that provides fast, flexible, and expressive data structures designed to make working with "relational" or "labeled" data both easy and intuitive. It aims to be the fundamental high-level building block for doing practical, real-world data analysis in Python. Additionally, it has the broader goal of becoming the most powerful and flexible open-source data analysis/manipulation tool available in any language. It is already well on its way towards this goal.

Table of Contents

Main Features

Here are just a few of the things that pandas does well:

Where to get it

The source code is currently hosted on GitHub at: https://github.com/pandas-dev/pandas

Binary installers for the latest released version are available at the Python Package Index (PyPI) and on Conda.

# conda
conda install -c conda-forge pandas
# or PyPI
pip install pandas

The list of changes to pandas between each release can be found here. For full details, see the commit logs at https://github.com/pandas-dev/pandas.

Dependencies

See the full installation instructions for minimum supported versions of required, recommended and optional dependencies.

Installation from sources

To install pandas from source you need Cython in addition to the normal dependencies above. Cython can be installed from PyPI:

pip install cython

In the pandas directory (same one where you found this file after cloning the git repo), execute:

pip install .

or for installing in development mode:

python -m pip install -ve . --no-build-isolation --config-settings editable-verbose=true

See the full instructions for installing from source.

License

BSD 3

Documentation

The official documentation is hosted on PyData.org.

Background

Work on pandas started at AQR (a quantitative hedge fund) in 2008 and has been under active development since then.

Getting Help

For usage questions, the best place to go to is Stack Overflow. Further, general questions and discussions can also take place on the pydata mailing list.

Discussion and Development

Most development discussions take place on GitHub in this repo, via the GitHub issue tracker.

Further, the pandas-dev mailing list can also be used for specialized discussions or design issues, and a Slack channel is available for quick development related questions.

There are also frequent community meetings for project maintainers open to the community as well as monthly new contributor meetings to help support new contributors.

Additional information on the communication channels can be found on the contributor community page.

Contributing to pandas

Open Source Helpers

All contributions, bug reports, bug fixes, documentation improvements, enhancements, and ideas are welcome.

A detailed overview on how to contribute can be found in the contributing guide.

You can also triage issues which may include reproducing bug reports, or asking for vital information such as version numbers or reproduction instructions. If you would like to start triaging issues, one easy way to get started is to subscribe to pandas on CodeTriage.

Or maybe through using pandas you have an idea of your own or are looking for something in the documentation and thinking ‘this can be improved’... you can do something about it!

Feel free to ask questions on the mailing list or on Slack.

As contributors and maintainers to this project, you are expected to abide by pandas' code of conduct. More information can be found at: Contributor Code of Conduct


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pandas (pandas-dev/pandas)

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What is this?pandas is a Python library providing fast, flexible data structures (Series and DataFrame) for working with labeled/relational data, aiming to be the fundamental building block for practical data analysis in Python.
Is it a framework or just a library I import?It's a library: you import pandas into your Python code and use its DataFrame/Series objects, not a standalone application or framework you build around.
How do I add it to a project?Install the binary release from PyPI with pip or from Conda; alternatively build from source using the pandas repo, which requires Cython in addition to the normal dependencies.
What does pandas need to run?It requires NumPy for array operations, python-dateutil for datetime extensions, and tzdata for timezone data (tzdata is only mandatory on Windows/Emscripten).
Does it handle missing or messy data well?Yes, pandas has built-in handling for missing data (NaN, NA, or NaT) across floating point and non-floating point data, plus data alignment so mismatched indices are reconciled automatically.
What kinds of data operations does pandas make easy?It supports group-by split-apply-combine operations, intuitive merging and joining of datasets, flexible reshaping and pivoting, hierarchical (multi-level) indexing, and robust I/O for CSV, Excel, databases, and the ultrafast HDF5 format.
Does pandas handle time series data?Yes, it includes time-series-specific functionality such as date range generation, frequency conversion, moving window statistics, and date shifting/lagging.
Where did pandas come from?Work on pandas started at AQR, a quantitative hedge fund, in 2008 and has been under active development since.
Can I resize a DataFrame after creating it?Yes, pandas supports size mutability, letting you insert and delete columns from a DataFrame or higher-dimensional objects after creation.
Creator
pandas-dev
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Age
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Commits · 90 Days