Skip to main content

Mountaineer

Mountaineer Logo

Python Version Test status

Move fast. Climb mountains. Don't break things.

Mountaineer 🏔️ is a framework to easily build webapps in Python and React. If you've used either of these languages before for development, we think you'll be right at home.

Main Features

Each framework has its own unique features and tradeoffs. Mountaineer focuses on developer productivity above all else, with production speed a close second.

  • 📝 Typehints up and down the stack: frontend, backend, and database
  • 🎙️ Trivially easy client<->server communication, data binding, and function calling
  • 🌎 Optimized server rendering for better accessibility and SEO
  • 🏹 Static analysis of web pages for strong validation: link validity, data access, etc.
  • 🤩 Skip the API or Node.js server just to serve frontend clients

Getting Started

New Project

To get started as quickly as possible, we bundle a project generator that sets up a simple project after a quick Q&A. Make sure you have pipx installed.

$ pipx run create-mountaineer-app

Mountaineer projects all follow a similar structure. After running this CLI you should see a new folder called my_webapp, with folders like the following:

my_webapp
  /controllers
    /home.py
  /models
    /mymodel.py
  /views
    /app
      /home
        /page.tsx
      /layout.tsx
    /package.json
    /tsconfig.json
  /app.py
  /cli.py
pyproject.toml

Every service file is nested under the my_webapp root package. Views are defined in a disk-based hierarchy (views) where nested routes are in nested folders. This folder acts as your React project and is where you can define requirements and build parameters in package.json and tsconfig.json. Controllers are defined nearby in a flat folder (controllers) where each route is a separate file. Everything else is just standard Python code for you to modify as needed.

Development

If you're starting a new application from scratch, you'll typically want to create your new database tables. Make sure you have postgres running. We bundle a docker compose file for convenience with create-mountaineer-app.

docker compose up -d
uv run createdb

Of course you can also use an existing database instance, simply configure it in the .env file in the project root.

Mountaineer relies on watching your project for changes and doing progressive compilation. We provide a few CLI commands to help with this.

While doing development work, you'll usually want to preview the frontend and automatically build dependent files. You can do this with:

$ uv run mountaineer-dev

Found 4 Python libraries for warm reload: click, fastapi, mountaineer, pydantic
Started Python backend in 2.05s
Local http://127.0.0.1:5006

Navigate to http://127.0.0.1:5006 to see your new webapp running.

Or, if you just want to watch the source tree for changes without hosting the server. Watching will allow your frontend to pick up API definitions from your backend controllers:

$ uv run mountaineer-watch

Both native commands are installed with Mountaineer and discover the project automatically.

Documentation

Metadata

Release files for mountaineer 0.20.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for mountaineer 0.20.0
File Size Uploaded
mountaineer-0.20.0.tar.gz 891.5 kB Details

Built distributions (wheels)

Table of built distributions (wheels) for mountaineer 0.20.0
File
mountaineer-0.20.0-cp310-abi3-win_amd64.whl CPython 3.10 abi3 Windows x86-64 Details
mountaineer-0.20.0-cp310-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.10 abi3 Linux glibc 2.17+ x86-64 Details
mountaineer-0.20.0-cp310-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl CPython 3.10 abi3 Linux glibc 2.17+ ARM64 Details
mountaineer-0.20.0-cp310-abi3-macosx_11_0_arm64.whl CPython 3.10 abi3 macOS 11.0+ ARM64 Details
mountaineer-0.20.0-cp310-abi3-macosx_10_12_x86_64.whl CPython 3.10 abi3 macOS 10.12+ x86-64 Details

Total release size: 86.1 MB

Release files / mountaineer-0.20.0.tar.gz

Download URL mountaineer-0.20.0.tar.gz
Size 891.5 kB
Tags Source
SHA-256 checksum
How to use checksums
9ce364d34da4598c25d0a67e5a8028da048ec9f79112d02af60e984307d5db8e
BLAKE2b-256 checksum
How to use checksums
dca691254f04a1e14e41ce6ae040173d02993b34a92d4b7de245ad7217db60dd
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release files / mountaineer-0.20.0-cp310-abi3-win_amd64.whl

Download URL mountaineer-0.20.0-cp310-abi3-win_amd64.whl
Size 15.8 MB
Tags CPython 3.10 Windows x86-64 abi3
SHA-256 checksum
How to use checksums
2d00ed2573ab8002e02d603500f5ea0ce366f3aff0f44c77f82b2a2be7fc84e1
BLAKE2b-256 checksum
How to use checksums
4ec28f7b03cb11029e5f10cb3c7e15f4c1212796d87b951f6fbfcddb63743b3e
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release files / mountaineer-0.20.0-cp310-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

Download URL mountaineer-0.20.0-cp310-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Size 17.9 MB
Tags CPython 3.10 Linux glibc 2.17+ x86-64 abi3
SHA-256 checksum
How to use checksums
9a7ec21968596083d36c29b79f70ec2da15f839626f660068fd7f08a95190bf8
BLAKE2b-256 checksum
How to use checksums
ef161d141ece22fc4e5fe6ef993a0a5e85b8b5faf1e4a51367039c527f9abb64
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release files / mountaineer-0.20.0-cp310-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL mountaineer-0.20.0-cp310-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size 18.3 MB
Tags CPython 3.10 Linux glibc 2.17+ ARM64 abi3
SHA-256 checksum
How to use checksums
dd4508db75213d5538f8fd04417ebd6d27b5d80bcdaf5ee8c58dc2a1d2ae1f48
BLAKE2b-256 checksum
How to use checksums
09e80b29a260e769892d35381c9b9f64ce6ef2e786bd0adc15a3ef76463cef2f
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release files / mountaineer-0.20.0-cp310-abi3-macosx_11_0_arm64.whl

Download URL mountaineer-0.20.0-cp310-abi3-macosx_11_0_arm64.whl
Size 16.1 MB
Tags CPython 3.10 abi3 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
ed1aecf901262936d640d74d83f22acfaaf849fa49b8606f81420018f34f215f
BLAKE2b-256 checksum
How to use checksums
cdedfb2e42a239281cd15610da784d42086981f8d333b06d98ed648cccfe6121
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release files / mountaineer-0.20.0-cp310-abi3-macosx_10_12_x86_64.whl

Download URL mountaineer-0.20.0-cp310-abi3-macosx_10_12_x86_64.whl
Size 17.0 MB
Tags CPython 3.10 abi3 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
14b9c566ad8c9c3b50ce59f19231cf85965f765429b338f5d178d5ea1546eb34
BLAKE2b-256 checksum
How to use checksums
0b6c941c3a5fb2de7177ddc7245dbd2054c52bb128269475801aea8fdeafbfc1
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Sep 23, 2026.

Transparency log

Release history Release notifications | RSS feed

This release

0.20.0 This release

6 release files

0.12.3

6 release files

0.12.2

6 release files

0.12.1

6 release files

0.11.1

6 release files

0.11.0

6 release files

0.10.3

6 release files

0.10.2

6 release files

0.9.2

6 release files

0.9.1

6 release files

0.9.0

6 release files

0.7.1

16 release files

0.6.0

16 release files

0.5.1

16 release files

0.4.1

11 release files

0.3.1

7 release files

0.2.0

26 release files

0.1.4

26 release files

0.1.3

26 release files

0.1.2

26 release files

0.1.1

2 release files

0.1.0

27 release files

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page