Files
e2b-dev--e2b/packages/python-sdk
Mish Ushakov 3167e19b4f fix(sdk): buffer template upload to set Content-Length, add regression tests (#1294)
## Summary
Consolidates the fix and tests from #1285 and #1293 into a single PR.

- **js-sdk**: `uploadFile` used to pass a Node `Readable` directly to
`fetch`, causing undici to fall back to `Transfer-Encoding: chunked`. S3
presigned PUT URLs reject chunked with 501 NotImplemented. Fix buffers
the archive first so `Content-Length` is set. Includes:
- Regression test that spins up a local HTTP server and asserts
`Content-Length` is set and matches the body, and `Transfer-Encoding` is
not chunked.
- Type-fix for the CLI's typecheck (cast `Pack` →
`AsyncIterable<Buffer>`).
- Dynamic import of `node:stream/consumers` so the browser bundle
doesn't pull it in.
- **python-sdk**: Adds sync + async regression tests for `upload_file`
that guard against the same class of bug (someone swapping
`tar_buffer.getvalue()` for a stream/generator). No Python code change —
the current implementation already passes bytes to `httpx.put(...,
content=...)`.

Authorship of the original JS fix commit preserved (truffle-dev).

Closes #1243.

## Test plan
- [x] `pnpm run test tests/template/uploadFile.test.ts` — passes
- [x] `pnpm run typecheck` / `lint` clean across js-sdk and cli
- [x] `poetry run pytest tests/sync/template_sync/test_upload_file.py
tests/async/template_async/test_upload_file.py -v` — both pass
- [x] `poetry run make format` / `make lint` / `make typecheck` clean

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: truffle <truffleagent@gmail.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-24 07:14:54 -07:00
..
2025-08-21 08:45:25 -07:00
2025-06-05 07:10:07 -07:00
2026-04-02 19:20:43 +00:00
2026-04-02 19:20:43 +00:00
2026-02-18 11:37:32 +01:00

e2b logo

Last 1 month downloads for the Python SDK

What is E2B?

E2B is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our JavaScript SDK or Python SDK.

Run your first Sandbox

1. Install SDK

pip install e2b

2. Get your E2B API key

  1. Sign up to E2B here.
  2. Get your API key here.
  3. Set environment variable with your API key
E2B_API_KEY=e2b_***

3. Start a sandbox and run commands

from e2b import Sandbox

with Sandbox.create() as sandbox:
    result = sandbox.commands.run('echo "Hello from E2B!"')
    print(result.stdout)  # Hello from E2B!

4. Code execution with Code Interpreter

If you need run_code(), install the Code Interpreter SDK:

pip install e2b-code-interpreter
from e2b_code_interpreter import Sandbox

with Sandbox.create() as sandbox:
    execution = sandbox.run_code("x = 1; x += 1; x")
    print(execution.text)  # outputs 2

5. Check docs

Visit E2B documentation.

6. E2B cookbook

Visit our Cookbook to get inspired by examples with different LLMs and AI frameworks.