Project entry point and generated executable not working using Python version 3.7

[kevintuwsp]

When initialising a project on Windows using the below commands, the resulting project executable does not run correctly.

uv init --app --project newpackage
uv run newpackage
SyntaxError: Non-UTF-8 code starting with '\x90' in file C:\Users\mrkev\Documents\Github\newpackage.venv\Scripts\newpackage.exe on line 2, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details
(newpackage)

Is there anything I am doing wrong? How can I check if the generated executable is correct?

[FishAlchemist]

I cannot reproduce the issue you're describing.
However, when I encounter similar encoding problems, it's usually because the source code is not in valid UTF-8.

[kevintuwsp]

I cannot reproduce the issue you're describing. However, when I encounter similar encoding problems, it's usually because the source code is not in valid UTF-8.

Apologies, you will need to change directory to the created project folder

uv init --app --project newpackage
cd newpackage
uv run newpackage

[FishAlchemist]

@kevintuwsp

Which version of UV are you using? I'm using UV 0.5.11 on Windows 11 x86-64, but I can't reproduce the issue.

[kevintuwsp]

I am using version 0.5.11 also.
Seems like your system isn't adding the executable to your path.
Can you try run the executable that UV generates in /.venv/Scripts/newpackage.exe?

[FishAlchemist]

@kevintuwsp No, my Scripts folder doesn't have newpackage.exe, so I want to create it from scratch and it won't have newpackage.exe.

[kevintuwsp]

Sorry it is a little late, my instructions were not correct.
It looks like this is working correctly on the later versions of python, e.g. 3.13.1.

However, for my use case I need to use the older 3.7.9 python version which shows the error.

uv init --app --package newpackage
cd newpackage
uv python install 3.7.9
uv python pin 3.7.9
uv run newpackage

[vivodi]

Python 3.7 is not supported.

uv/pyproject.toml

Line 10 in e6126ce

requires-python = ">=3.8"

[FishAlchemist]

@kevintuwsp
If I use Python 3.7, this issue will occur.
However, as @vivodi mentioned, uv doesn't support 3.7, so even if this issue needs to be fixed, it will probably take a long time.
So the quickest solution is to avoid using 3.7. It seems like 3.8 works fine.

[kevintuwsp]

Thanks all for your help, closing this issue.