feat(python-sdk): add py.typed marker for PEP 561 type checking support

[FisherXZ]

Context

Python packages can opt into PEP 561 by shipping a py.typed marker file alongside their source. Without it, type checkers like mypy --strict and pyright treat the package as untyped and suppress all type errors at the import boundary — meaning users get no type safety from e2b even though the SDK ships full annotations.

Issue: #888

Investigation

The e2b Python SDK already ships complete type annotations across all public APIs (sandbox/, sandbox_async/, sandbox_sync/, etc.). The only missing piece was the py.typed marker file that signals to type checkers that the package is typed.

Checked pyproject.toml — no additional configuration needed. The existing:

packages = [{ include = "e2b" }, { include = "e2b_connect" }]

tells Poetry to include the entire e2b/ directory recursively in the built wheel, which picks up py.typed automatically.

Fix

Added an empty py.typed marker file at packages/python-sdk/e2b/py.typed per the PEP 561 spec. No pyproject.toml or __init__.py changes required.

Also includes a pre-existing ruff formatting fix in test_stacktrace.py surfaced by make format.

Test Plan

• make lint (ruff check + ruff format --check) — passes
• make typecheck — local Poetry venv has a broken Python 3.13 dylib (pre-existing env issue unrelated to this change); CI should confirm
• Downstream verification: add e2b to a mypy --strict or pyright project and confirm no Cannot find implementation or library stub errors

🤖 Generated with Claude Code

[claude]

Claude Code Review

This pull request is from a fork — automated review is disabled. A repository maintainer can comment @claude review to run a one-time review.

[changeset-bot]

🦋 Changeset detected

Latest commit: bd18fcd

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@e2b/python-sdk	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR