●Change8

Migrating to Starlette 0.46.0

Version 0.46.0 introduces 1 breaking change. This guide details how to update your code.

Released: 2/22/2025

1
Breaking Changes
2
Migration Steps
4
Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

GZipMiddlewareBaseHTTPMiddlewareMultiPartParserTestClient

Breaking Changes

●Issue #1

`MultiPartParser`: renamed parameter `max_file_size` to `spool_max_size`. Update any code that passes `max_file_size` to use `spool_max_size`.

Migration Steps

  1. 1
    Replace any usage of `MultiPartParser(max_file_size=…)` with `MultiPartParser(spool_max_size=…)`.
  2. 2
    If you rely on `TestClient(timeout=…)`, adjust your code to the recommended timeout configuration to avoid deprecation warnings.

Release Summary

Starlette 0.46.0 adds a Vary header to GZipMiddleware, renames MultiPartParser’s `max_file_size` to `spool_max_size`, and deprecates `TestClient(timeout=…)`, while fixing background task exception handling and SSE compression.

Need More Details?

View the full release notes and all changes for Starlette 0.46.0.

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