0.3.5

What's Changed

This release includes contributions from several contributors -- thanks @wasimsandhu , @dmadisetti , and @deepyaman!

Highlights. This release includes a new public API for programmatically running multiple apps (in run/read-only mode) -- this lets you create multi-page apps out of marimo notebooks, as well as seamlessly serve marimo apps as part of, eg, a larger FastAPI app.

Docs: https://docs.marimo.io/guides/deploying/programmatically.html

Example:

from typing import Annotated, Callable, Coroutine
from fastapi.responses import HTMLResponse, RedirectResponse
import marimo
from fastapi import FastAPI, Form, Request, Response


# Create a marimo asgi app
server = (
    marimo.create_asgi_app()
    .with_app(path="", root="./pages/index.py")
    .with_app(path="/dashboard", root="./pages/dashboard.py")
    .with_app(path="/sales", root="./pages/sales.py")
)

# Create a FastAPI app
app = FastAPI()

app.add_middleware(auth_middleware)
app.add_route("/login", my_login_route, methods=["POST"])

app.mount("/", server.build())

# Run the server
if __name__ == "__main__":
    import uvicorn

    uvicorn.run(app, host="localhost", port=8000)

All changes.

• Deduplicate code completion form description field by @deepyaman in #991
• feat: Limit maximum selections in mo.ui.multiselect by @wasimsandhu in #996
• bug fix: support env / status without pip (#992) by @dmadisetti in #999
• fix(deps): update dependency katex to v0.16.10 [security] by @renovate in #1000
• improvement: use url hash instead of query param by @mscolnick in #1001
• feat: create_asgi_app to programatically run marimo apps by @mscolnick in #1002
• 0.3.5 by @akshayka in #1007

New Contributors

• @deepyaman made their first contribution in #991
• @wasimsandhu made their first contribution in #996

Full Changelog: 0.3.4...0.3.5

0.3.4

What's Changed

Highlights

Automatic package discovery and installation. marimo now automatically detects when you're missing packages in your Python environment, and gives you the option to install them using pip, uv, or rye. When installation is successful, cells depending on the packages are automatically re-run!

marimo will alert you to missing packages:

and keeps you updated on installation progress:

This feature makes it really easy to get started with new notebooks and projects, especially when working in a fresh Python environment: just install packages as you go!

Visualize arrays and matrices with mo.image()! mo.image() can now visualize NumPy arrays, torch Tensors, and Scipy sparse matrices as images.

• fix: try to load worker from file, and fallback to inline by @mscolnick in #959
• fix: load worker from url again by @mscolnick in #960
• fix: update user config in wasm to fallback to config from html by @mscolnick in #967
• mo.image(): visualize NumPy array, torch.tensor, scipy.sparse matrix by @dmadisetti in #964
• [Snyk] Upgrade copilot-node-server from 1.19.2 to 1.20.1 by @mscolnick in #963
• feat: package installation from pypi by @akshayka in #961
• improvment: consistent error toasting on all request by @mscolnick in #969
• feat: configurable package manager + uv, rye support by @akshayka in #971
• fix: graceful shutdown for uvicorn==0.29.0 by @akshayka in #972
• improvements for running as a script by @akshayka in #973
• faq: document how to make marimo accessible on all network interfaces by @akshayka in #980
• Fix mpl interactive: remove asyncio.run() by @akshayka in #981
• tests: add data-testids to components by @mscolnick in #983
• feat: cell actions in the command-pallete by @mscolnick in #984
• improvement: configure package manager in the missing package alert by @akshayka in #985
• 0.3.4 by @akshayka in #986

New Contributors

• @dmadisetti made their first contribution in #964

Full Changelog: 0.3.3...0.3.4

0.3.3

What's Changed

Improvements and bug fixes

• improvement: patch urllib in bootstrap to support networking by @akshayka in #934
• dev release workflow for marimo python by @akshayka in #935
• dev release fixes by @akshayka in #936
• bump patch version for dev release by @akshayka in #937
• chore: add frontend dev release by @mscolnick in #939
• chore: add PR comment with dev url by @mscolnick in #940
• chore: pass marimo version to worker by @mscolnick in #941
• fix: add additional padding for scrollbar on resize by @mscolnick in #942
• fix: __ for cell names in marimo convert by @akshayka in #943
• fix: file upload should serialize raw bytes by @akshayka in #949
• chore: improves typings of webworker rpc by @mscolnick in #952
• fix: copy styles by @mscolnick in #953
• chore: fix comment on PR by @mscolnick in #954
• Revert "chore: improves typings of webworker rpc" by @mscolnick in #955
• Revert "Revert "chore: improves typings of webworker rpc"" by @mscolnick in #956
• 0.3.3 by @akshayka in #957

Full Changelog: 0.3.2...0.3.3

0.3.2

What's Changed

Bug fixes and improvements.

• improvement: patch IPython.display.display to call mo.output.append by @akshayka in #919
• fix: pyodide interrupts by @akshayka in #921
• address review comments from previous pr by @akshayka in #922
• fix: fix keyboard controls with carousel by @mscolnick in #925
• fix: content layouting of elements in by @mscolnick in #926
• fix: render altair layered charts (dedupe selection params) by @mscolnick in #927
• fix: function calls in wasm, add error state to pyodide bootstrap by @mscolnick in #928
• fix: disable pdb patch in marimo run by @akshayka in #932
• 0.3.2 by @akshayka in #933

Full Changelog: 0.3.1...0.3.2

0.3.1

What's Changed

This release includes bug fixes.

• chore: _anywidget -> anywidget by @akshayka in #912
• fix: disable touch in carousel for UI element compatibility by @akshayka in #914
• fix: carousel global styles which fixes latex rendering by @mscolnick in #916
• fix: safari overflow on hover by @mscolnick in #917
• 0.3.1 by @akshayka in #918

Full Changelog: 0.3.0...0.3.1

0.3.0

What's Changed

The default host is now 127.0.0.1; previously, marimo listened on all interfaces by default. This is the only change that might be considered breaking in this release.

Highlights.

• This change adds a new layout command, mo.carousel, which lets you create a simple slide-like presentation of of a list of outputs; you can even view a carousel in full screen!
• Some of you thought the default app width was too narrow, while others found full width too wide — we've added a third medium width!
• Experimental AI completion, powered by OpenAI: https://docs.marimo.io/guides/ai_completion.html
• Support for wrapping AnyWidget widgets and making them reactive — this also lets you write custom reactive plugins! https://docs.marimo.io/api/inputs/anywidget.html

All Changes.

• change: make 127.0.0.1 the default host by @akshayka in #909
• feat: add a third width option, "medium", in between normal and full by @akshayka in #888
• feat: mo.carousel and full screen slides by @mscolnick in #908
• feat: add anywidget formatter by @mscolnick in #906
• experimental: ai completion by @mscolnick in #893
• improvement: mock micropip when not running under pyodide by @akshayka in #907
• fix: altair blinking on layered charts by @mscolnick in #887
• fix: remove running script tags html by @mscolnick in #890
• fix example by @akshayka in #891
• pyodide: lazily install black on first format by @akshayka in #894
• fix: traceback formatting with cell composition by @akshayka in #895
• docs: add plotly to reactive plots guide by @akshayka in #898
• docs: grid layout, update layout api, update stale image by @akshayka in #903
• remove margin left from controls in user/app config forms by @akshayka in #902
• fix(deps): update dependency react-resizable-panels to v2.0.12 by @renovate in #884
• 0.2.14 by @akshayka in #910
• 0.3.0 by @akshayka in #911

Full Changelog: 0.2.13...0.3.0

0.2.13

What's Changed

• fix: clear serializedEditorState after used by @mscolnick in #878
• fix: register_transformers when altair is imported by @mscolnick in #879
• fix: don't parse floats as BigInts by @akshayka in #882
• 0.2.13 by @akshayka in #883

Full Changelog: 0.2.12...0.2.13

0.2.12

What's Changed

• fix: ignore vscode bindings in pyodide by @mscolnick in #875
• 0.2.12 by @akshayka in #876

Full Changelog: 0.2.11...0.2.12

0.2.11

What's Changed

Bug fixes and improvements.

• improvement: flush sync in wasm instead of async by @mscolnick in #868
• docs: altair data-transformers by @mscolnick in #869
• fix: inline slider by @mscolnick in #873
• 0.2.11 by @akshayka in #874

Full Changelog: 0.2.10...0.2.11

0.2.10

What's Changed

Improvements and bug fixes.

• improvement: rename files, file viewer, move files by @mscolnick in #849
• docs: we now have code completion in wasm by @akshayka in #854
• chore: fix typo ci by @akshayka in #855
• fix: support big-ints in datatable by @mscolnick in #853
• improvement: format numbers in slider by @mscolnick in #857
• fix: remove multiprocessing mock for WASM by @akshayka in #862
• docs: convert doc example to use wasm by @mscolnick in #859
• improvement: add upload file (dnd and button), render csv in a table by @mscolnick in #858
• improvement: debounce mo.status.progress when flusing to the UI by @mscolnick in #856
• fix: fallback when parsing config by @mscolnick in #863
• fix: wait to render before downloading png by @mscolnick in #864
• fix: opening notebooks from the UI by @mscolnick in #865
• add version to UI dropdown by @mscolnick in #866
• 0.2.10 by @akshayka in #867

Full Changelog: 0.2.9...0.2.10