projen

library0.100.0pypypi✓ verified 86d ago

Projen is a CDK (Cloud Development Kit) for software projects, allowing you to define and manage project configurations (e.g., build scripts, dependencies, CI/CD) using code. Version 0.99.52, with active development and regular releases.

devops aws

pip install projen

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · PROJEN

projen

devopspythonv0.100.0

Install

3.9s avg

Import

—

Disk

40MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v0.100.0 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.000s · 39.2MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 3.9s · import 0.000s · 40MB

40MB installed

● package 40MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Project

✓ from projen import Project

standard top-level import

TypeScriptProject

✓ from projen.typescript import TypeScriptProject

submodule for TypeScript projects

PythonProject

✓ from projen.python import PythonProject

submodule for Python projects

Create and synthesize a basic Projen project.

from projen import Project project = Project( name="my-project", project_type="library", python_executable="python3", ) project.synth()

projen --version

Debug

Known issues

breakingIn projen 0.80+, the `Project` class no longer accepts `name` as a positional argument; it must be a keyword argument.

fix

Use `Project(name="my-project")` instead of `Project("my-project")`.

affects: >=0.80.0

deprecatedThe `TypeScriptProject` option `jest` is deprecated; use `jestOptions` instead.

fix

Replace `jest=True` with `jestOptions=JestOptions(...)`

affects: >=0.70.0

gotchaProjen uses `~=3.9` for Python requirement, which means Python 3.9 exactly. Using Python 3.10+ may cause unexpected issues.

fix

Use Python 3.9 in your environment, or check for compatibility with newer versions.

affects: all

gotchaThe `synth()` method is required to generate project files; forgetting to call it results in an empty directory.

fix

Always call `project.synth()` after configuration.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'projen'

Projen not installed in the current Python environment.

fix

Run `pip install projen`

TypeError: Project.__init__() takes 1 positional argument but 2 were given

Passing `name` as a positional argument in projen 0.80+.

fix

Use keyword argument: `Project(name="my-project")`

AttributeError: module 'projen' has no attribute 'TypeScriptProject'

Importing from wrong submodule or using outdated import path.

fix

Use `from projen.typescript import TypeScriptProject`

Upgrade

Version history

0.100.0latest on PyPI · released Jun 19, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

23 hits · last 30 days

node

Resources

githubhttps://github.com/projen/projen.git ↗

packagehttps://pypi.org/project/projen/ ↗

homepagehttps://projen.io ↗