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IPython
IPython
IPython
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Original authorFernando Perez[1]
DevelopersBrian E. Granger, Min Ragan-Kelley, Paul Ivanov, Thomas Kluyver, Matthias Bussonnier
Initial release2001; 24 years ago (2001)[1]
Stable release
9.5.0[2] Edit this on Wikidata / 29 August 2025; 2 months ago (29 August 2025)
Repository
Written inPython, JavaScript, CSS, HTML
Operating systemCross-platform
TypeShell
LicenseBSD
Websiteipython.org Edit this on Wikidata

IPython (Interactive Python) is a command shell for interactive computing in multiple programming languages, originally developed for the Python programming language, that offers introspection, rich media, shell syntax, tab completion, and history. IPython provides the following features:

  • Interactive shells (terminal and Qt-based).
  • A browser-based notebook interface with support for code, text, mathematical expressions, inline plots and other media.
  • Support for interactive data visualization and use of GUI toolkits.
  • Flexible, embeddable interpreters to load into one's own projects.
  • Tools for parallel computing.

IPython is a NumFOCUS fiscally sponsored project.[3]

Parallel computing

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Architectural View of IPython's parallel machinery

IPython is based on an architecture that provides parallel and distributed computing. IPython enables parallel applications to be developed, executed, debugged and monitored interactively, hence the I (Interactive) in IPython.[4] This architecture abstracts out parallelism, enabling IPython to support many different styles of parallelism[5] including:

  • Single program, multiple data (SPMD) parallelism
  • Multiple program, multiple data (MPMD) parallelism
  • Message passing using MPI
  • Task parallelism
  • Data parallelism
  • Combinations of these approaches
  • Custom user defined approaches

With the release of IPython 4.0, the parallel computing capabilities were made optional and released under the ipyparallel python package. And most of the capabilities of ipyparallel are now covered by more mature libraries like Dask.

IPython frequently draws from SciPy stack[6] libraries like NumPy and SciPy, often installed alongside one of many Scientific Python distributions.[6] IPython provides integration with some libraries of the SciPy stack, notably matplotlib, producing inline graphs when used with the Jupyter notebook. Python libraries can implement IPython specific hooks to customize rich object display. SymPy for example implements rendering of mathematical expressions as rendered LaTeX when used within IPython context, and Pandas dataframe use an HTML representation.[7]

Other features

[edit]

IPython allows non-blocking interaction with Tkinter, PyGTK, PyQt/PySide and wxPython (the standard Python shell only allows interaction with Tkinter). IPython can interactively manage parallel computing clusters using asynchronous status callbacks and/or MPI. IPython can also be used as a system shell replacement.[8] Its default behavior is largely similar to Unix shells, but it allows customization and the flexibility of executing code in a live Python environment.

End of Python 2 support

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IPython 5.x (Long Time Support) series is the last version of IPython to support Python 2. The IPython project pledged to not support Python 2 beyond 2020[9] by being one of the first projects to join the Python 3 Statement, the 6.x series is only compatible with Python 3 and above. It is still possible though to run an IPython kernel and a Jupyter Notebook server on different Python versions allowing users to still access Python 2 on newer version of Jupyter.

Project Jupyter

[edit]
Main article: Project Jupyter
Old IPython Notebook interface

In 2014, IPython creator Fernando Pérez announced a spin-off project from IPython called Project Jupyter.[10] IPython continued to exist as a Python shell and kernel for Jupyter, but the notebook interface and other language-agnostic parts of IPython were moved under the Jupyter name.[11][12] Jupyter is language agnostic and its name is a reference to core programming languages supported by Jupyter, which are Julia, Python, and R.[13]

Jupyter Notebook (formerly IPython Notebook) is a web-based interactive computational environment for creating, executing, and visualizing Jupyter notebooks. It is similar to the notebook interface of other programs such as Maple, Mathematica, and SageMath, a computational interface style that originated with Mathematica in the 1980s.[14] It supports execution environments (aka kernels) in dozens of languages. By default Jupyter Notebook ships with the IPython kernel, but there are over 100 Jupyter kernels as of May 2018.

In the media

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IPython has been mentioned in the popular computing press and other popular media,[15][14] and it has a presence at scientific conferences.[16] For scientific and engineering work, it is often presented as a companion tool to matplotlib.[17]

Grants and awards

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Beginning 1 January 2013, the Alfred P. Sloan Foundation announced that it would support IPython development for two years.[18]

On 23 March 2013, Fernando Perez was awarded the Free Software Foundation Advancement of Free Software award for IPython.

In August 2013, Microsoft made a donation of $100,000 to sponsor IPython's continued development.[19]

In January 2014, it won the Jolt Productivity Award[20] from Dr. Dobb's in the category of coding tools. In July 2015, the project won a funding of $6 million from Gordon and Betty Moore Foundation, Alfred P. Sloan Foundation and Leona M. and Harry B. Helmsley Charitable Trust.[21]

In May 2018, it was awarded the 2017 ACM Software System Award.[22] It is the largest team to have won the award.[23]

See also

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References

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[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

IPython

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IPython is an open-source project that provides a powerful interactive shell and kernel for Python, designed to enhance exploratory and interactive with features such as tab completion, object , command , and magic commands for tasks like timing code execution and . Originally developed as a to improve upon the standard Python REPL, it has evolved into a core component of the broader Jupyter ecosystem, serving as the Python-specific execution engine for notebooks and other frontends. The project originated in 2001 when Fernando Pérez, then a graduate student at the University of Colorado, Boulder, integrated elements from three earlier prototypes—his own ipython for flexible configuration and output access, Janko Hauser's IPP for usability and help systems, and Nathan Gray's LazyPython for syntax enhancements and colored tracebacks—to create a more robust interactive environment for scientific computing. IPython quickly gained popularity among researchers and developers for its support of parallel computing, embeddability in applications, and extensibility, with early releases focusing on Python 2 compatibility before shifting to Python 3.3+ starting with version 6.0 in 2017. A pivotal evolution occurred in 2014, when the IPython team announced at the separation of language-agnostic components into the new , allowing broader support for multiple programming languages; IPython 3.0, released in February 2015, was the final monolithic version, while IPython 4.0 and later focused solely on the Python kernel and interactive shell. This transition enabled Jupyter to handle notebooks, conversion tools, and widgets independently, while IPython retained its BSD-licensed core for Python execution, now powering interactive sessions in terminals, IDEs, and Jupyter interfaces. Today, IPython continues to emphasize high-performance interactive features, including a kernel-client model for remote execution and integration with libraries like ipyparallel for .

Overview

Definition and Purpose

IPython is an enhanced interactive command shell and computing environment designed primarily for the Python programming language, with extensible support for other languages through kernel mechanisms, focusing on facilitating exploratory and interactive workflows. It extends the capabilities of the standard Python REPL by providing a robust platform for executing code in real-time, inspecting variables, and integrating computational results seamlessly into sessions. This design emphasizes user productivity in dynamic, iterative tasks rather than linear scripting. Initiated in 2001 by Fernando Pérez, a graduate student at the , IPython emerged as a response to the shortcomings of the vanilla Python interactive shell, which lacked sufficient features for demanding scientific computing applications, such as advanced code introspection, session history, and system integration. Pérez developed it as a personal tool to streamline his physics research, merging enhancements with existing open-source projects to create a more capable interactive environment. The core purpose of IPython is to enable comprehensive interactive and exploratory , supporting rapid of algorithms, in-depth , and instructional use in computational disciplines including science, , and . It caters to developers, researchers, and educators seeking an advanced interactive paradigm that goes beyond conventional or simple script execution. IPython forms the foundational technology for , extending its interactive model to a broader array of languages and applications.

Core Components

IPython's architecture is built around three primary components that facilitate interactive : the IPython shell, serving as an enhanced read-eval-print loop (REPL); the IPython kernel, acting as the execution backend; and various frontend interfaces, such as the terminal-based shell, Qt console, and integration with Jupyter notebooks. The IPython shell provides a for direct interaction, while the kernel operates as a separate process to execute code, manage the interactive , and handle communication with frontends. This decoupled design allows multiple frontends to connect to a single kernel, enabling flexible user experiences across different interfaces. The kernel plays a central role in code execution by receiving requests from frontends, evaluating Python code in a controlled environment, maintaining the user's for variables and objects, and returning results including outputs, errors, and execution status. It communicates with frontends using the messaging library, which employs a protocol based on ROUTER/DEALER and PUB/SUB socket patterns to handle asynchronous exchanges over multiple channels, such as the shell channel for execute requests and the IOPub channel for broadcasting outputs. This setup ensures reliable, low-latency interaction, with messages serialized in format and secured via signatures. The components support multi-language execution through the extensible kernel architecture, where language-specific kernels can implement the same messaging protocol to handle code from beyond Python, such as Julia or R, often via integrations like those in the Jupyter ecosystem. In this model, a frontend sends code execution requests to the kernel, which processes them in its native language environment, manages the corresponding namespace, and responds with results, thereby allowing seamless interactivity across languages without altering the core IPython structure. This architecture promotes modularity, as depicted in a typical flow: the frontend initiates a request, the kernel executes and publishes outputs, and the frontend renders the response, supporting both local and remote connections.

History

Origins and Early Development

IPython originated in 2001 as a personal project by Fernando Pérez, then a graduate student pursuing a PhD in at the . Motivated by the limitations of Python's standard interactive interpreter for exploratory scientific computing, Pérez sought to create a more efficient tool for running small code chunks, inspecting data, and iterating on analyses during his research workflow. This initial development addressed the need for enhanced interactivity in numerical simulations and data exploration, drawing from Pérez's experiences in physics where was essential. The project saw its first public release as IPython 0.1 in , introducing key enhancements such as improved tab completion for code and commands, as well as better object to display detailed information about variables and functions directly in the shell. These features made IPython particularly appealing for interactive use, allowing users to query and examine objects without disrupting their workflow. From the outset, IPython was distributed as under the revised BSD , facilitating community contributions and adoption. Early adoption occurred primarily within the scientific Python community, where IPython complemented emerging libraries like for array operations and for scientific algorithms, enabling more fluid integration in research pipelines. By providing a robust interactive environment, it quickly became a staple for physicists, biologists, and other researchers using Python for data analysis and simulation, with integrations that leveraged these ecosystems for tasks like numerical computing and visualization. Key early contributors included Brian Granger, who joined in 2004 to expand the project's capabilities in , and Min Ragan-Kelley, who began contributing in 2006 on web-based interfaces and other enhancements. Around 2008, these efforts coalesced into a more formalized IPython development team, with Pérez, Granger, and Ragan-Kelley leading collaborative advancements that solidified its role in interactive scientific workflows.

Key Releases and Transitions

IPython 1.0, released on August 8, 2013, marked a significant milestone after nearly twelve years of development, introducing robust notebook support alongside numerous enhancements to the interactive shell, such as improved tab completion and better integration with scientific computing libraries. This version solidified IPython's role as a comprehensive environment for interactive Python computing, emphasizing stability and user productivity through refined and documentation updates. In 2014, the project transitioned from a standalone initiative to the core of , a broader aimed at interactive ; this shift was formalized with the release of IPython 4.0 in August 2015, which decoupled the notebook server, Qt console, and other components into separate Jupyter subprojects, allowing IPython to focus solely on the Python kernel while promoting modularity and extensibility. Concurrently, IPython adopted semantic versioning practices and centralized development on , facilitating collaborative contributions and consistent release cycles that enhanced maintainability. IPython 6.0, released on April 19, 2017, dropped support for Python 2, requiring Python 3.3 or later. IPython 7.0, released on September 27, 2018, raised the minimum to Python 3.5 or later, while introducing native support for top-level async/await execution to streamline asynchronous programming workflows. This release improved overall stability through architectural refinements and began emphasizing modern Python features, setting the stage for subsequent enhancements in error handling and performance. As of November 2025, the 9.x series serves as the current stable branch (latest version 9.7.0, released November 5, 2025), requiring Python 3.11 or higher and incorporating key enhancements such as integration with large language models (LLMs) for completions, support for 256-color themes including Gruvbox Dark, improved magics like %autoreload and %timeit, initial compatibility with Python 3.14, and refined handling of safer sys.path configurations. These updates, alongside patches and type annotations for better compatibility with static analysis tools, have bolstered IPython's reliability and integration with contemporary Python ecosystems, including type hints and advanced support.

Core Features

Interactive Shell Functionality

The IPython interactive shell enhances the standard Python REPL with several user-facing features designed to improve productivity during interactive coding sessions. Syntax highlighting colors code elements such as keywords, strings, and comments as they are typed, making the input more readable and reducing errors. Tab completion supports exploration of objects and methods by pressing the Tab key after typing an object name followed by a dot (e.g., str.), displaying available attributes and methods; since version 6.0, it leverages the library for static to provide more accurate suggestions, including for container elements like data[0].. Additionally, automatic parentheses matching detects incomplete expressions and prompts for continuation with new lines upon pressing Enter, preventing premature execution of partial code. History management in the IPython shell allows seamless recall and persistence of commands across sessions. Inputs and outputs are automatically stored in numbered lists accessible as In and Out variables, with up- and down-arrow keys enabling navigation through previous entries during a session. The %history magic command displays or searches the full command history, which is saved persistently in a database located by default at ~/.ipython/profile_default/history.sqlite for retrieval in future sessions. This feature is particularly useful in Jupyter notebooks, where users can recover previously executed code by running %history in a new notebook or terminal; however, it recovers only the executed input code, not unsaved edits or markdown cells. For longer-term storage, the %store magic command serializes and saves Python variables or outputs to disk, enabling their restoration via %store -r in subsequent sessions. Introspection tools facilitate quick examination of objects and without leaving the shell. The ? operator, appended to an object name (e.g., print?), displays its and basic information, while ?? provides additional details, including the source code if available. The %who magic command lists all interactive variables in the current , with options like %whos for a tabular summary including types and values, aiding in and . Shell access integrates system-level operations directly into the Python environment. The ! prefix executes operating system commands from within the shell (e.g., !ls -l), with output capturable in a list via assignment like files = !ls; Python variables can be interpolated using $ for dynamic commands (e.g., !echo $HOME). This functionality builds on Python's subprocess module, allowing seamless invocation of external processes while maintaining the interactive context.

Magic Commands and Extensions

IPython provides a rich system of magic commands, which are special commands prefixed with % for line magics or %% for cell magics, enabling concise execution of common tasks directly within the interactive shell. Line magics operate on a single input line following the command, making them suitable for quick operations like timing code execution, while cell magics apply to the entire cell, allowing multi-line content to be processed as a unit, such as writing output to files. This distinction enhances workflow efficiency by tailoring commands to the scope of the task. Among built-in magics, %timeit exemplifies line magics by benchmarking code performance through repeated executions and statistical analysis, such as %timeit sum(range(1000)), which reports average time over multiple loops. For cell magics, %%writefile facilitates file by saving the cell's contents to a specified file, as in %%writefile example.py followed by code lines, optionally appending with the -a flag to avoid overwriting. Other notable built-ins include %matplotlib, a line magic that configures inline plotting for libraries like (e.g., %matplotlib inline embeds figures in the output), %pdb for toggling the Python debugger on errors (e.g., %pdb on), and %run to execute external Python scripts interactively (e.g., %run script.py), preserving variables in the current namespace. Users can extend IPython's functionality by creating custom magics via its , registering functions as line, cell, or hybrid magics to suit specific needs like tailored or performance analysis. For instance, a standalone line magic for simple data loading might be defined using the @register_line_magic decorator:

python

from IPython.core.magic import register_line_magic @register_line_magic def load_data(line): "Load data from a file path provided in the line." import [pandas](/page/PANDAS) as pd path = line.strip() return pd.read_csv(path)

from IPython.core.magic import register_line_magic @register_line_magic def load_data(line): "Load data from a file path provided in the line." import [pandas](/page/PANDAS) as pd path = line.strip() return pd.read_csv(path)

This registers load_data as %load_data, callable as %load_data file.csv to return a DataFrame. For more complex, stateful magics like custom profiling, one can inherit from IPython.core.magic.Magics with the @magics_class decorator and register via an extension loader function, enabling access to the shell instance for deeper integration. Extensions further augment IPython by loading modular enhancements through the %load_ext magic, which imports and activates Python modules containing load_ipython_extension functions. A prominent example is the built-in autoreload extension, loaded with %load_ext autoreload, which supports dynamic code reloading during development to reflect external edits without restarting the session. Its modes, set via %autoreload, include mode 0 (disabled), mode 1 (reload explicit imports marked by %aimport), mode 2 (reload all modules except those excluded), and mode 3 (mode 2 plus new module objects), with %autoreload 2 being common for comprehensive updates in iterative workflows.

Advanced Capabilities

Parallel Computing

IPython introduced its parallel computing framework in version 0.10, released in 2009, enabling distributed execution within interactive sessions through a client-server architecture. The framework comprises controllers, which coordinate task distribution, engines that execute computations, and hubs that manage connections between clients and engines. This setup allows users to leverage multiple processes or nodes for parallel workloads directly from an IPython shell. The framework supports both direct (blocking) and asynchronous (non-blocking) execution modes, facilitated by View objects that abstract interactions with the cluster. In blocking mode, operations such as view.execute() wait for completion before returning control, suitable for sequential workflows, while non-blocking mode returns an AsyncResult object immediately, enabling continued interaction during computation. View objects, including DirectView for targeted engine execution and LoadBalancedView for dynamic task assignment, simplify managing these modes across engines. Load-balanced execution distributes independent tasks across available engines to optimize resource use, while broadcast execution applies operations uniformly to all engines. For example, the @lview.parallel decorator from the ipyparallel client can parallelize a function over an iterable, splitting inputs and gathering results:

python

from ipyparallel import Client rc = Client() lview = rc.load_balanced_view() @lview.parallel(block=True) def square(x): return x * x results = lview.map(square, range(10))

from ipyparallel import Client rc = Client() lview = rc.load_balanced_view() @lview.parallel(block=True) def square(x): return x * x results = lview.map(square, range(10))

This approach supports function-level parallelization without manual task management. Magic commands like %px provide brief enhancements for quick parallel runs on selected engines. For scalability, the framework integrates with clusters using MPI for high-performance interconnects or SSH for launching engines on remote hosts, supporting setups from multicore machines to distributed systems. It includes mechanisms, such as automatic detection and handling of engine failures, allowing tasks to continue on surviving engines. Post-2017 developments, including the separation into the standalone ipyparallel package, have emphasized compatibility with modern tools, with recommendations to favor Dask for large-scale, task-based parallelism where IPython's model may limit scaling beyond hundreds of engines.

Integration with Other Tools

IPython supports embeddability through its embed() function, which allows developers to insert an interactive IPython shell directly into Python scripts or applications for on-the-fly debugging and exploration. This feature is particularly useful in environments, such as embedding IPython within Django's management shell, where Django automatically detects and utilizes IPython if installed, enhancing the interactive shell with features like tab completion and . For instance, running python manage.py shell in a Django project launches an IPython-enhanced console, enabling seamless interaction with models and ORM queries. Integration with integrated development environments (IDEs) extends IPython's utility beyond the command line. Spyder, a scientific Python IDE, incorporates an IPython console by default, providing , inline plotting, and variable exploration tailored for workflows. In , the official Python extension leverages IPython for interactive windows and Jupyter support, allowing users to execute code cells with rich outputs like plots and DataFrames directly in the editor. Similarly, offers native IPython console support, including magic commands and variable inspection, configurable via project settings to enable enhanced interactivity over the standard Python REPL. IPython also facilitates rich output in terminal-based environments through ANSI escape sequences, enabling colored and formatted displays without requiring graphical interfaces. Within the broader Python ecosystem, IPython integrates smoothly with data manipulation and visualization libraries. It works seamlessly with for handling DataFrames, where users can inspect and manipulate tabular data interactively; for example, loading a CSV into a DataFrame and exploring it via IPython's . The %matplotlib inline magic command embeds plots directly in the output, a common practice for visualizing pandas data without external viewers, ensuring plots appear inline during sessions. For , ipdb serves as an IPython-enhanced for the standard pdb module, offering tab completion, , and postmortem analysis to streamline troubleshooting in complex scripts. As of 2025, IPython maintains strong compatibility with asynchronous programming tools, particularly asyncio, through its built-in autoawait mechanism introduced in version 7.0, which automatically awaits coroutines in the interactive shell without explicit syntax changes. This enables efficient handling of concurrent I/O operations in modern applications. Additionally, IPython's kernel powers extensions in environments like JupyterLab, facilitating integration with web frameworks such as or Flask for interactive development and testing of asynchronous endpoints. These ties underscore IPython's role in bridging interactive with production-grade tools.

Relationship to Project Jupyter

Evolution and Separation

In 2014, Fernando Pérez, Brian Granger, and collaborators announced at the SciPy conference, aiming to extend IPython's notebook interface to support interactive computing across multiple programming languages beyond Python. This initiative sought to address the growing demand for tools in scientific computing and , decoupling the notebook's architecture from Python-specific components to enable broader adoption. The separation, often termed the "Big Split," was driven by the need to manage divergent development needs, such as stable APIs in shell versus experimental features in environment, while fostering a unified under NumFOCUS to sustain open-source growth. As a result, IPython transitioned into a subproject focused on Python enhancements, while encompassed the generalized components. The IPython 4.0 release in 2015 marked the structural division, with the codebase extracted and rebranded as , allowing IPython to concentrate on its interactive shell and kernel functionalities. The IPython 3.x series represented the final unified versions containing all components. Subsequently, expanded with the stable release of JupyterLab in June 2019, providing a more flexible interface for notebooks and tools, and the introduction of Voilà in 2019, which enables conversion of notebooks into standalone web applications. Throughout this evolution, IPython has remained the default kernel for executing Python code within the Jupyter ecosystem.

Role as Jupyter Kernel

IPython serves as the of a Jupyter kernel, providing the execution engine for Python code within the Jupyter ecosystem. The IPython kernel communicates with Jupyter frontends, such as or JupyterLab interfaces, using the Jupyter protocol, which is a JSON-based messaging system transported over sockets. This protocol facilitates various message types for code execution, including execute requests and replies, object introspection via completion and messages, and handling of outputs such as stdout, stderr, and results. In the context of Jupyter, the IPython kernel supports rich MIME-type outputs, enabling the display of diverse content beyond plain text, such as for formatted tables, images for visualizations like plots, and for mathematical expressions. It also integrates with ipywidgets, allowing interactive elements like sliders and buttons to be embedded directly in cells for dynamic data exploration and application building. Additionally, the Jupyter environment permits multi-kernel switching, where users can select the IPython kernel alongside other kernels, ensuring seamless transitions without restarting the session. The execution model of the IPython kernel is primarily designed for single-user scenarios in standard Jupyter setups, where one kernel instance handles code execution for an individual user's frontend. However, it can be extended to multi-user environments through tools like JupyterHub, which spawns isolated kernel instances per user to maintain separation and . Security features include token-based , introduced in Jupyter Notebook 4.3 in late 2016, which generates a temporary token on server startup to prevent unauthorized access to the kernel; this was further hardened in subsequent releases to mitigate risks like in untrusted notebooks. As of November 2025, the IPython kernel, via ipykernel 7.1.0 and later, offers enhanced compatibility with Python 3.13 and higher, incorporating tokenizer improvements for advanced f-string handling introduced in IPython 8.x to support Python 3.12+ features. In conjunction with JupyterLab 4.x, released in 2023, it benefits from optimizations like kernel subshells for concurrent execution (experimental in ipykernel 7.0), faster initial rendering through visible-cell-only loading, and improved reporting, including clickable tracebacks and table-of-contents indicators for failed cells to aid .

Development and Maintenance

End of Python 2 Support

In 2016, with the release of IPython 5.0, the project announced that future major versions would drop support for Python 2, culminating in IPython 6.0, which required Python 3.3 or later and was released on April 19, 2017. This decision aligned with the broader Python community's timeline, as Python 2 reached its official end-of-life on January 1, 2020, after which no security updates or bug fixes were provided. Users migrating from Python 2 faced challenges due to key syntax and feature differences, such as the transition from print statements to the print() function, integer division behavior, and Unicode handling, often necessitating compatibility libraries like six or the future imports during the porting process. The IPython team and Python core developers provided resources to ease this transition, including official porting guides that outlined automated tools and manual adjustments for interactive shells and notebooks. Dropping Python 2 support enabled a cleaner, more maintainable codebase for by eliminating dual-version compatibility layers, allowing developers to leverage Python 3-exclusive features like improved async/await syntax and type hints. This shift also contributed to performance gains through access to Python 3's ongoing optimizations, such as faster string handling and garbage collection refinements in later versions. By 2025, Python 3 adoption among developers had reached near-universal levels, with surveys indicating over 99% of active Python projects and users having migrated, minimizing legacy usage. For users tied to legacy Python 2 environments, alternatives included sticking with the frozen IPython 5.x long-term support branch, which remained compatible but unmaintained after 2017, or employing conversion tools like 2to3 to automatically refactor code for Python 3 compatibility.

Community Contributions and Funding

IPython's development is governed by a steering council as part of the broader Project Jupyter governance structure, which has been under the fiscal sponsorship of NumFOCUS since IPython became one of its first sponsored projects in 2013. NumFOCUS provides organizational support, including financial management and community resources, while the steering council oversees technical decisions, contributor guidelines, and project direction to ensure stability and inclusivity. Contributor guidelines are hosted on GitHub, emphasizing code of conduct adherence, pull request (PR) submissions for features and bug fixes, and documentation improvements, with the project accumulating over 891 contributors by 2025. Funding for IPython has been sustained through a mix of grants and corporate sponsorships channeled via NumFOCUS. In 2015, the provided significant support as part of a $6 million grant to the Jupyter/IPython for advancing collaborative data science tools. Additional funding came from (NSF) awards, such as grants 1928406 and 1928374, which bolstered Jupyter-related efforts including IPython's role as the core kernel. Corporate sponsors like Anaconda have contributed through multi-year partnerships with NumFOCUS, enabling employee time for code contributions and event support that indirectly sustain IPython maintenance. The community drives contributions via models such as submitting bug fixes and feature PRs through , enhancing documentation, and participating in collaborative coding sprints. Annual sprints at PyCon conferences allow developers to tackle specific issues, from resolving bugs to improving , fostering a collaborative environment for open-source advancement. As of November 2025, IPython remains in active development with regular releases, including version 9.7.0 on November 5, emphasizing enhancements for broader accessibility and seamless integrations in AI and workflows within the Jupyter ecosystem.

Impact and Reception

Adoption in Industry and Academia

IPython has become integral to curricula across numerous universities, where it serves as a foundational tool for teaching interactive computing and . For instance, institutions like the , have adopted Jupyter notebooks—powered by the IPython kernel—in their lower-division courses to facilitate and practical application of Python concepts. Similarly, curricula at other universities emphasize IPython's role in building foundational skills for data manipulation and visualization, often integrating it with libraries like and to simulate real-world analytical workflows. In academic research, IPython supports reproducible workflows by enabling interactive exploration, documentation, and sharing of computational results within a single environment. Organizations such as utilize IPython-based Jupyter notebooks for development on systems, allowing researchers to iteratively analyze large datasets and prototype models efficiently. At , IPython integrates with the Virtual Research Environment through JupyterLab extensions, facilitating containerized, reproducible analysis pipelines for data processing. These applications underscore IPython's value in ensuring transparency and verifiability in scientific computations, as highlighted in broader discussions on Jupyter for reproducible scientific workflows. In industry, IPython is widely employed for and exploration, particularly in tech companies handling large-scale analytics. Google integrates IPython as the core kernel in Google , a cloud-based platform that enables collaborative notebook execution with access to GPUs and TPUs, streamlining experimentation for teams worldwide. Netflix leverages Jupyter notebooks, built on IPython, across its teams for tasks ranging from data access and template-based analysis to scheduled production workflows, enhancing productivity in content recommendation and personalization systems. Google's internal best practices for Jupyter notebooks further illustrate its role in transitioning experimental code to production-ready applications within enterprise environments. As of , IPython demonstrates substantial popularity through PyPI metrics, recording over 85 million downloads in the preceding month, reflecting its essential status in the Python ecosystem. Surveys indicate high adoption among data professionals; for example, approximately 69% of data scientists rely on Jupyter notebooks—dependent on IPython—for , while 50% of Python developers use them for model training. IPython's educational impact is amplified by free, official resources that promote paradigms over traditional static scripting. The IPython project's documentation and Jupyter's "Try Jupyter" interface provide accessible tutorials for beginners, enabling hands-on experimentation with code, visualizations, and narratives in a browser-based setting. These materials foster deeper conceptual understanding, as evidenced by studies showing improved learning outcomes in graduate-level courses through interactive notebook-based instruction.

Media Coverage and Awards

IPython and its evolution into Project Jupyter have garnered significant media attention for advancing interactive computing and open science. A 2014 article in Nature highlighted the IPython notebook's growing role in enabling scientists to maintain detailed records of their work, develop teaching modules, and collaborate effectively, emphasizing its contributions to reproducible research. Coverage in O'Reilly publications, such as the IPython Interactive Computing and Visualization Cookbook, has showcased IPython's practical applications in high-performance numerical computing and data analysis within Jupyter environments. Similarly, IEEE publications have discussed IPython as a foundational system for interactive scientific computing, supporting data visualization and parallel processing facilities. In terms of accolades, Fernando Pérez, IPython's creator, received the 2012 Free Software Foundation Award for the Advancement of Free Software for developing IPython as a rich architecture for interactive computing. The team was honored with the 2018 ACM Software System Award for creating tools including IPython, the Jupyter Notebook, and JupyterHub, which have become standards for in , , and industry. In March 2024, received a special award from the White House Office of Science and Technology Policy recognizing its contributions to . In May 2025, the Jupyter project announced its Distinguished Contributor awards for the 2024 cohort, acknowledging key individuals for advancing the ecosystem. Substantial funding has also underscored the project's impact; for example, the contributed to a $6 million grant in 2015, alongside other organizations, to expand Jupyter's capabilities for collaborative and reproducible workflows. As of 2025, IPython continues to be referenced in developer surveys and media as a foundational tool in the Python ecosystem. For instance, the JetBrains State of Python 2025 report highlights the relevance of interactive environments like Jupyter notebooks in data exploration, noting that 51% of surveyed developers are involved in data exploration and processing tasks. Recent podcast features, such as the April 2025 episode of The Education Podcast featuring Pérez, have explored IPython's legacy in open science and interactive computing education. Minor discussions arose around the 2015 project split, where IPython separated its language-agnostic components into to support broader language interoperability; this restructuring was transparently communicated to the community and resolved without ongoing conflict.

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