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

[Tarun Sharma]

Hi

I'm trying to use the snowflake connector and i've installed the all cryptography dependencies with latest versions. When i'm trying to run the project python manage.py run server then it's working fine. When i tried to run on 80 number port or domain then it' showing me this error

DLL load failed while importing _rust: The specified module could not be found.
Here is my OS environment.
1. Windows server 2019
2. Django working with xampp (apache2)

Please let me know if anyone can help me. 

Thanks

[RANGA BHARATH JINKA]

The error you're encountering, *"DLL load failed while importing _rust: The specified module could not be found"*, typically indicates a compatibility issue between your Python environment and the cryptography library (or one of its dependencies) used by the Snowflake connector.

Here's how you can troubleshoot and resolve the issue:

### 1. **Check Cryptography and Dependencies Installation**
   - The cryptography package used by Snowflake requires Rust to compile certain dependencies, especially for Windows.
   - Ensure you have installed the required dependencies with Rust correctly by following these steps:
     - Open your terminal or command prompt.
     - Run the following command to install the Rust toolchain:
       ```bash
       pip install cryptography
       ```
     - Alternatively, you can try installing it with Rust support enabled:
       ```bash
       pip install cryptography --use-pep517
       ```

### 2. **Check Compatibility with Windows**
   - Since you are on Windows Server 2019, ensure that the Snowflake connector and its dependencies (like cryptography) are compatible with the Python version and Windows Server.
   - It might help to uninstall cryptography and reinstall it specifically with the correct version that supports your environment:
     ```bash
     pip uninstall cryptography
     pip install cryptography==36.0.0  # or the latest version supporting your setup
     ```

### 3. **Reinstall Snowflake Connector**
   - Uninstall and reinstall the Snowflake connector in case of a corrupt or incomplete installation:
     ```bash
     pip uninstall snowflake-connector-python
     pip install snowflake-connector-python
     ```

### 4. **Check Apache Configuration (For Production Use)**
   - You mentioned it's working with `python manage.py runserver` but fails when running on port 80 or domain with Apache.
   - Ensure that Apache has permission to access all necessary Python packages and environment variables.
   - Verify that the virtual environment (if using one) is activated when running the application via Apache.
   - You can configure this in the `wsgi.py` file or your Apache config, ensuring the correct Python environment is being used.

### 5. **DLL Dependencies**
   - If you're still facing issues, you might be missing some DLLs. Install the [Microsoft Visual C++ Redistributable](https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170), which is sometimes needed for some Python libraries to run on Windows.

After following these steps, try running the project again on the desired port or domain. 

All the best 👍

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Thanks and Regards

J. Ranga Bharath

cell: 9110334114

[Tarun Sharma]

Hello Ranga

Thanks for the reply, I already tried these same steps which you mentioned, But still facing the same issue. My main concern is when i'm trying to run the project on an 8080 or 8000 port then it's working fine.
But when i'm trying to run this project through apache then it's giving the DLL load failed while importing _rust: The specified module could not be found.

When I tried to remove the code from views.py then the site is working fine on domain or 80 number port that means there is no issue with environment variables and apache or xampp.
If we tried to run on a python manage.py runserver 127.0.0.1:8080 or 8000 port then the cryptography module is working fine that means there is no cryptography version issue. It's a really weird thing. Please let me know if you have any other solution.

Thanks
Tarun

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[RANGA BHARATH JINKA]

If you integrate sentry for capturing error logs , then check there

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[Nilesh Mishra]

Plz help

I am new to python

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[Anish Kumar]

Creating a Virtual Environment and Installing Packages
Introduction
A virtual environment is a self-contained environment for Python projects, isolating your project's dependencies from other projects on your system. This helps prevent conflicts and ensures that your project uses the exact versions of libraries it needs.
Steps
* Create a Virtual Environment:
   * Open your terminal or command prompt.
   * Navigate to the directory where you want to create the virtual environment.
   * Use the following command to create a new virtual environment named myenv:
     python -m venv myenv

* Activate the Virtual Environment:
   * Windows:
     myenv\Scripts\activate

   * macOS/Linux:
     source myenv/bin/activate

   * Once activated, your terminal prompt will likely change to indicate that you're working within the virtual environment.
* Install Packages:
   * Use the pip command to install packages within the virtual environment. For example, to install the numpy package:
     pip install numpy

   * You can install multiple packages at once by separating them with spaces:
     pip install numpy pandas matplotlib

Additional Notes
* If you're using a development environment like Jupyter Notebook or Visual Studio Code, you may need to configure it to use the virtual environment. Refer to your IDE's documentation for specific instructions.
* To deactivate the virtual environment, simply type deactivate in your terminal.
* For more advanced package management, consider using tools like pipenv or poetry.
Example
# Create a virtual environment
python -m venv myproject

# Activate the virtual environment
source myproject/bin/activate

# Install packages
pip install numpy pandas matplotlib

# Deactivate the virtual environment
deactivate

By following these steps, you can effectively manage your Python project dependencies using virtual environments.
* https://allanmuturi.medium.com/converting-soap-ui-to-rest-using-flask-4b26f9d5138

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[Nilesh Mishra]

Thanks for your help

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[Herman Afandi]

You can download vscode or pycharm the community edition. I don't think you can install pip inside windows 10.

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[Nilesh Mishra]

It's done thanks

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[Nilesh Mishra]

Y= a+bX2

a and b are constant 

Where X is a variable and user input in the range 0 to 400 

[Vishesh Mangla]

Use matplotlib and numpy, ask chatgpt

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[Nilesh Mishra]

There is no output for this ?

Import matplotlib.pyplot as plt

Import Numpy as np

Qi=np.linspace(0,20,5)

QHc=["980","940","920","900","890"]

# this pair should form and plotted

 # (0,980),(5,940),(10,920),(15,900),(20,890)

Plt.plot (Qi,QHc)

Plt.grid(True)

Plt.show()

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[Kiotseaeton Lancaster]

I use wsl for all my dev needs on windows.

To install pip, simply: sudo apt install python3-pip

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[manohar chundru]

yes it correct but some times I got issue

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[Nilesh Mishra]

On Tue, Sep 17, 2024 at 3:57 PM Nilesh Mishra <k.niles...@gmail.com> wrote:

There is no output for this ?

Import matplotlib.pyplot as plt

Import Numpy as np

Qi=np.linspace(0,20,5)

QHc=["980","940","920","900","890"]

# this pair should form and plotted

 # (0,980),(5,940),(10,920),(15,900),(20,890)

Plt.plot (Qi,QHc)

Plt.grid(True)

Plt.show()