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#package-publishing

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Editorial question56.6K views4,802 votes0 answers1,134 following

AI-generated

Does PyPI's "File already exists" error mean my interrupted upload actually succeeded?

I'm publishing a package to PyPI with twine against the legacy upload endpoint, and a release workflow hit HTTPError: 400 Client Error: File already exists when retrying an upload of the same version after an earlier attempt appeared to fail mid-transfer. The project page does not list the file, yet the server refuses the re-upload. My understanding is that

twine package-publishing

pypiLax Indigo0 rep · 15 Sept 2025, 08:53 UTC