Fail to download python(3.11) on Windows platform

[PeerXu]

Summary

Hi, everybody. UV is an amazing tool for Python.
I try to download another version for Python, but failed without any usefully message.

C:\Users\nyt\workspaces\maliang_next
λ uv python install 3.12 -vvv
DEBUG uv 0.7.18 (87e9ccfb9 2025-07-01)
TRACE Checking lock for `C:\Users\nyt\AppData\Roaming\uv\python` at `C:\Users\nyt\AppData\Roaming\uv\python\.lock`
DEBUG Acquired lock for `C:\Users\nyt\AppData\Roaming\uv\python`
WARN Ignoring malformed managed Python entry:
    Failed to parse Python installation key `downloads`: not enough `-`-separated values
DEBUG No installation found for request `Python 3.12`
DEBUG Found download `cpython-3.12.11-windows-x86_64-none` for request `Python 3.12`
DEBUG Using request timeout of 30s
DEBUG Downloading https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
DEBUG Extracting cpython-3.12.11-20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz to temporary location: C:\Users\nyt\AppData\Roaming\uv\python\.temp\.tmpZCgGtI
TRACE Handling request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz with authentication policy auto
TRACE Request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz is unauthenticated, checking cache
TRACE No credentials in cache for URL https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
TRACE Attempting unauthenticated request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
TRACE checkout waiting for idle connection: ("https", github.com)
DEBUG starting new connection: https://github.com/
TRACE Http::connect; scheme=Some("https"), host=Some("github.com"), port=None
DEBUG connecting to 20.205.243.166:443

C:\Users\nyt\workspaces\maliang_next
λ

Then, it's maybe the network problem(I am in China). So I try to using proxy with uv.

But got the same resolve.

C:\Users\nyt\workspaces\maliang_next
λ set HTTP_PROXY=http://10.1.0.90:1087

C:\Users\nyt\workspaces\maliang_next
λ set HTTPS_PROXY=http://10.1.0.90:1087

C:\Users\nyt\workspaces\maliang_next
λ curl -I https://github.com --proxy http://10.1.0.90:1087
HTTP/1.0 200 Connection established

HTTP/1.1 200 OK
Date: Wed, 02 Jul 2025 10:05:58 GMT
Content-Type: text/html; charset=utf-8
Vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Accept-Language,Accept-Encoding, Accept, X-Requested-With
content-language: en-US
ETag: W/"669f2ff590386a5ca738bf82e327d8a8"
Cache-Control: max-age=0, private, must-revalidate
Strict-Transport-Security: max-age=31536000; includeSubdomains; preload
X-Frame-Options: deny
X-Content-Type-Options: nosniff
X-XSS-Protection: 0
Referrer-Policy: origin-when-cross-origin, strict-origin-when-cross-origin
Content-Security-Policy: default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net/ productionresultssa1.blob.core.windows.net/ productionresultssa2.blob.core.windows.net/ productionresultssa3.blob.core.windows.net/ productionresultssa4.blob.core.windows.net/ productionresultssa5.blob.core.windows.net/ productionresultssa6.blob.core.windows.net/ productionresultssa7.blob.core.windows.net/ productionresultssa8.blob.core.windows.net/ productionresultssa9.blob.core.windows.net/ productionresultssa10.blob.core.windows.net/ productionresultssa11.blob.core.windows.net/ productionresultssa12.blob.core.windows.net/ productionresultssa13.blob.core.windows.net/ productionresultssa14.blob.core.windows.net/ productionresultssa15.blob.core.windows.net/ productionresultssa16.blob.core.windows.net/ productionresultssa17.blob.core.windows.net/ productionresultssa18.blob.core.windows.net/ productionresultssa19.blob.core.windows.net/ github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com github.githubassets.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com www.youtube-nocookie.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com images.ctfassets.net/8aevphvgewt8/; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com github.githubassets.com assets.ctfassets.net/8aevphvgewt8/ videos.ctfassets.net/8aevphvgewt8/; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
Server: github.com
Accept-Ranges: bytes
Set-Cookie: _gh_sess=3fI4gdvjxyQ8Sibr%2FH%2B%2FDh9A1JX4msTMCllCgKqzeEFzHSMu1o903bq%2BNCxUxTPAEFhbPAxLl7Y9cyrqUIFzlL8mO9hv0%2BX%2FT3%2BAbZyYOFrVxEBa7z%2F9F1Ge3noFubz9lNRYND%2BY2e71yQqcMRCF4uQIY3DFhAJqaCGX%2BKlztILIPmtw4VNFNsVRUv%2BvFfGEUsT9ygtggp4cU9%2FbzpZzWKT0n6ksoLblGqRu2hPfpPVWAX%2BNMhtWjn3v7lgNRW98T7NRbWZyVPEpgviZ3%2FRvZQ%3D%3D--SecZsIakOvTr0%2FyV--m0s3s1IZVxMIDpMWk%2BYtzQ%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
Set-Cookie: _octo=GH1.1.321417867.1751450767; Path=/; Domain=github.com; Expires=Thu, 02 Jul 2026 10:06:07 GMT; Secure; SameSite=Lax
Set-Cookie: logged_in=no; Path=/; Domain=github.com; Expires=Thu, 02 Jul 2026 10:06:07 GMT; HttpOnly; Secure; SameSite=Lax
X-GitHub-Request-Id: 99D0:DF069:189D1AD:21F8A0C:6865048F


C:\Users\nyt\workspaces\maliang_next
λ uv python install 3.12 -vvv
DEBUG uv 0.7.18 (87e9ccfb9 2025-07-01)
TRACE Checking lock for `C:\Users\nyt\AppData\Roaming\uv\python` at `C:\Users\nyt\AppData\Roaming\uv\python\.lock`
DEBUG Acquired lock for `C:\Users\nyt\AppData\Roaming\uv\python`
WARN Ignoring malformed managed Python entry:
    Failed to parse Python installation key `downloads`: not enough `-`-separated values
DEBUG No installation found for request `Python 3.12`
DEBUG Found download `cpython-3.12.11-windows-x86_64-none` for request `Python 3.12`
DEBUG Using request timeout of 30s
DEBUG Downloading https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
DEBUG Extracting cpython-3.12.11-20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz to temporary location: C:\Users\nyt\AppData\Roaming\uv\python\.temp\.tmpCEd9zE
TRACE Handling request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz with authentication policy auto
TRACE Request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz is unauthenticated, checking cache
TRACE No credentials in cache for URL https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
TRACE Attempting unauthenticated request for https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
TRACE checkout waiting for idle connection: ("https", github.com)
DEBUG starting new connection: https://github.com/
DEBUG proxy(http://10.1.0.90:1087) intercepts 'https://github.com/'
TRACE Http::connect; scheme=Some("http"), host=Some("10.1.0.90"), port=Some(Port(1087))
DEBUG connecting to 10.1.0.90:1087

C:\Users\nyt\workspaces\maliang_next
λ

Thank you for helping me.

Platform

Windows 11 X86_64

Version

uv 0.7.18 (87e9ccf 2025-07-01)

Python version

Python 3.13.2

[zanieb]

Can you share the output of uv python list?

[PeerXu]

Can you share the output of uv python list?

C:\Users\nyt\workspaces\maliang_next
λ uv python list
cpython-3.14.0b3-windows-x86_64-none                 <download available>
cpython-3.14.0b3+freethreaded-windows-x86_64-none    <download available>
cpython-3.13.5-windows-x86_64-none                   <download available>
cpython-3.13.5+freethreaded-windows-x86_64-none      <download available>
cpython-3.13.2-windows-x86_64-none                   C:\Users\nyt\scoop\apps\python\current\python.exe
cpython-3.12.11-windows-x86_64-none                  <download available>
cpython-3.12.8-windows-x86_64-none                   C:\Users\nyt\scoop\shims\python3.exe
cpython-3.12.8-windows-x86_64-none                   C:\Users\nyt\scoop\shims\python.exe
cpython-3.11.13-windows-x86_64-none                  <download available>
cpython-3.10.18-windows-x86_64-none                  <download available>
cpython-3.9.23-windows-x86_64-none                   <download available>
cpython-3.8.20-windows-x86_64-none                   <download available>
pypy-3.11.11-windows-x86_64-none                     <download available>
pypy-3.10.16-windows-x86_64-none                     <download available>
pypy-3.9.19-windows-x86_64-none                      <download available>
pypy-3.8.16-windows-x86_64-none                      <download available>
graalpy-3.11.0-windows-x86_64-none                   <download available>
graalpy-3.10.0-windows-x86_64-none                   <download available>

C:\Users\nyt\workspaces\maliang_next
λ

[PeerXu]

@zanieb hello, anything should I upload anymore?

[zanieb]

I don't know what's going on there. I presume the process is getting interrupted?

Can you get the $LASTEXITCODE?

[konstin]

Do wget or curl work?

wget "https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz"

[PeerXu]

Yes, the wget works. <img width="2232" height="830" alt="Image" src="https://github.com/user-attachments/assets/34eccb3b-6122-42b4-8a52-0b0855c585b2" /> konsti ***@***.***> 于2025年8月2日周六 00:19写道：

…

*konstin* left a comment (astral-sh/uv#14414) <#14414 (comment)> Do wget or curl work? wget "https://github.com/astral-sh/python-build-standalone/releases/download/20250630/cpython-3.12.11%2B20250630-x86_64-pc-windows-msvc-install_only_stripped.tar.gz" — Reply to this email directly, view it on GitHub <#14414 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAH2F6VLAURYAPL7X3EXC4D3LOHQZAVCNFSM6AAAAACATPJAJWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTCNBVGEYDINZYGE> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[PeerXu]

I don't know what's going on there. I presume the process is getting interrupted?

Can you get the $LASTEXITCODE?

PS C:\Users\peer> uv venv --seed --managed-python --python 3.11 -vv
DEBUG uv 0.7.20 (251420396 2025-07-09)
DEBUG Using Python request `3.11` from explicit request
DEBUG Searching for Python 3.11 in managed installations
DEBUG Searching for managed installations at `AppData\Roaming\uv\python`
DEBUG Requested Python not found, checking for available download...
TRACE Checking lock for `AppData\Roaming\uv\python` at `AppData\Roaming\uv\python\.lock`
DEBUG Acquired lock for `AppData\Roaming\uv\python`
DEBUG Using request timeout of 30s
INFO Fetching requested Python...
DEBUG Downloading https://github.com/astral-sh/python-build-standalone/releases/download/20250708/cpython-3.11.13%2B20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
DEBUG Extracting cpython-3.11.13-20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz to temporary location: C:\Users\peer\AppData\Roaming\uv\python\.temp\.tmph9uZAK
TRACE Handling request for https://github.com/astral-sh/python-build-standalone/releases/download/20250708/cpython-3.11.13%2B20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz with authentication policy auto
TRACE Request for https://github.com/astral-sh/python-build-standalone/releases/download/20250708/cpython-3.11.13%2B20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz is unauthenticated, checking cache
TRACE No credentials in cache for URL https://github.com/astral-sh/python-build-standalone/releases/download/20250708/cpython-3.11.13%2B20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
TRACE Attempting unauthenticated request for https://github.com/astral-sh/python-build-standalone/releases/download/20250708/cpython-3.11.13%2B20250708-x86_64-pc-windows-msvc-install_only_stripped.tar.gz
PS C:\Users\peer> echo $LASTEXITCODE
-1073741819
PS C:\Users\peer>

The last exit code. @zanieb