ImportError: DLL load failed while importing _rust : The specified module could not be found

[CoderYunTang]

Bug Description

Python::with_gil(|py|
{
let ts = py.import("cryptography.hazmat.bindings._rust");
if let Err(err) = ts {
println!("{}", err);
}
}

ImportError: DLL load failed while importing _rust : The specified module could not be found

Importing with the python interpreter is no problem:

Steps to Reproduce

1. python3.11.5
2. windows 10
3. py.import("cryptography.hazmat.bindings._rust");
4. ImportError: DLL load failed while importing _rust : The specified module could not be found

Backtrace

No response

Your operating system and version

Windows 10

Your Python version (python --version)

python 3.11.5

Your Rust version (rustc --version)

rustc 1.70.0

Your PyO3 version

0.19.2

How did you install python? Did you use a virtualenv?

https://www.python.org/

Additional Info

No response

[davidhewitt]

Do you use a virtualenv? This is probably just #1896

[CoderYunTang]

The same goes for not using a virtual environment. I've tried a lot of things and they don't work.

[CoderYunTang]

I tried it on another computer and it was the same

[davidhewitt]

Have you checked what libraries the cryptography extension is linked against, and are they available on your PATH when running your program?

[chatdeschroedinger]

I had the same issue with a venv on windows with python 3.9.1
The issue was solved by upgrading to python 3.9.7

[chai-dev682]

I have got a same issue when usign scrapy for web scraping
does anyone help me?

[davidhewitt]

@QsageHint what OS? What steps did you take to set up your environment and install cryptography?

[chai-dev682]

OS: Windows 10
PythonL 3.9.0
I have create virtual environment using virtualenv (20.25.1), and installed scrapy (2.11.1)
Of course, I have installed MSVC and windows sdk

[davidhewitt]

Can you try a newer Python version? It seemed like just above 3.9.1 had a problem and I wonder if we'll see the same thing here.

[chai-dev682]

Good
I have just installed python 3.9.13 and now it is working well

[richyk1]

Good I have just installed python 3.9.13 and now it is working well

I'm using pyenv so I just upgraded my Python version to 3.10.0 and it seems to have fixed the issue.
I did:
pyenv install 3.10.0
pyenv global 3.10.0