https://github.com/sdpython/pandas-streaming

Streaming API for pandas applied to big datasets
https://github.com/sdpython/pandas-streaming

numpy pandas python3 streaming-data streaming-data-processing

Last synced: about 7 hours ago
JSON representation

Streaming API for pandas applied to big datasets

• Host: GitHub
• URL: https://github.com/sdpython/pandas-streaming
• Owner: sdpython
• License: mit
• Created: 2017-09-21T16:45:17.000Z (about 7 years ago)
• Default Branch: main
• Last Pushed: 2024-01-27T11:29:56.000Z (8 months ago)
• Last Synced: 2024-04-27T21:05:04.789Z (5 months ago)
• Topics: numpy, pandas, python3, streaming-data, streaming-data-processing
• Language: Python
• Homepage: https://sdpython.github.io/doc/pandas-streaming/dev/
• Size: 790 KB
• Stars: 27
• Watchers: 7
• Forks: 8
• Open Issues: 3
• Metadata Files:
  • Readme: README.rst
  • Changelog: CHANGELOGS.rst
  • License: LICENSE.txt
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

README

        
pandas-streaming: streaming API over pandas

===========================================

.. image:: https://ci.appveyor.com/api/projects/status/4te066r8ne1ymmhy?svg=true

    :target: https://ci.appveyor.com/project/sdpython/pandas-streaming

    :alt: Build Status Windows

.. image:: https://dev.azure.com/xavierdupre3/pandas_streaming/_apis/build/status/sdpython.pandas_streaming

    :target: https://dev.azure.com/xavierdupre3/pandas_streaming/

.. image:: https://badge.fury.io/py/pandas_streaming.svg

    :target: http://badge.fury.io/py/pandas_streaming

.. image:: https://img.shields.io/badge/license-MIT-blue.svg

    :alt: MIT License

    :target: https://opensource.org/license/MIT/

.. image:: https://codecov.io/gh/sdpython/pandas-streaming/branch/main/graph/badge.svg?token=0caHX1rhr8 

    :target: https://codecov.io/gh/sdpython/pandas-streaming

.. image:: http://img.shields.io/github/issues/sdpython/pandas_streaming.png

    :alt: GitHub Issues

    :target: https://github.com/sdpython/pandas_streaming/issues

.. image:: https://pepy.tech/badge/pandas_streaming/month

    :target: https://pepy.tech/project/pandas_streaming/month

    :alt: Downloads

.. image:: https://img.shields.io/github/forks/sdpython/pandas_streaming.svg

    :target: https://github.com/sdpython/pandas_streaming/

    :alt: Forks

.. image:: https://img.shields.io/github/stars/sdpython/pandas_streaming.svg

    :target: https://github.com/sdpython/pandas_streaming/

    :alt: Stars

.. image:: https://img.shields.io/github/repo-size/sdpython/pandas_streaming

    :target: https://github.com/sdpython/pandas_streaming/

    :alt: size

`pandas-streaming `_

aims at processing big files with `pandas `_,

too big to hold in memory, too small to be parallelized with a significant gain.

The module replicates a subset of *pandas* API

and implements other functionalities for machine learning.

.. code-block:: python

    from pandas_streaming.df import StreamingDataFrame

    sdf = StreamingDataFrame.read_csv("filename", sep="\t", encoding="utf-8")

    for df in sdf:

        # process this chunk of data

        # df is a dataframe

        print(df)

The module can also stream an existing dataframe.

.. code-block:: python

    import pandas

    df = pandas.DataFrame([dict(cf=0, cint=0, cstr="0"),

                           dict(cf=1, cint=1, cstr="1"),

                           dict(cf=3, cint=3, cstr="3")])

    from pandas_streaming.df import StreamingDataFrame

    sdf = StreamingDataFrame.read_df(df)

    for df in sdf:

        # process this chunk of data

        # df is a dataframe

        print(df)

It contains other helpers to split datasets into

train and test with some weird constraints.