Can I call python script in c#? - Stack Overflow

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I have a C# project which is a simple console application, which takes an input from the user and returns an output.

In this solution I have created a Python file named app.py along with a virtual environment named env and a requirements.txt file. This Python file takes an input and returns an output.

Using the following commands I can run the Python file:

python -m venv env

.\env\Scripts\activate

pip list

python -m pip install -U pip

python -m pip install -U groq

python -m pip install -U python-dotenv

Although it seems I didn't use the requirements.txt file (I'm new to Python)

Can I use this Python file with all its dependencies in C#? In a way that I can take input from the user using C# (console application), pass it to the Python file, and receive the output that the Python file gives in C# and display it to the user?

The version is .NET 9 and Python 3.12.

I saw a number of libraries like ironpython, but apparently they are for using Python code in C# or vice versa.

I have a C# project which is a simple console application, which takes an input from the user and returns an output.

In this solution I have created a Python file named app.py along with a virtual environment named env and a requirements.txt file. This Python file takes an input and returns an output.

Using the following commands I can run the Python file:

python -m venv env

.\env\Scripts\activate

pip list

python -m pip install -U pip

python -m pip install -U groq

python -m pip install -U python-dotenv

Although it seems I didn't use the requirements.txt file (I'm new to Python)

Can I use this Python file with all its dependencies in C#? In a way that I can take input from the user using C# (console application), pass it to the Python file, and receive the output that the Python file gives in C# and display it to the user?

The version is .NET 9 and Python 3.12.

I saw a number of libraries like ironpython, but apparently they are for using Python code in C# or vice versa.

• python
• c#

Share Improve this question Follow asked Jan 29 at 7:14 armanarman 89933 gold badges1414 silver badges3030 bronze badges 5

• Starting a new process for each Python script execution is expensive – Bhargav Commented Jan 29 at 7:20
• Could you explain what your overall goal is? Something like this is certainly doable, but including multiple programming languages tend to increase the development cost, and also make deployment and configuration more complex. So are you sure this is the best approach for whatever you are trying to do? – JonasH Commented Jan 29 at 7:30
• @JonasH My goal is to use artificial intelligence. I have written artificial intelligence code with Python. This project is a sample. In the product I use microservices and create a service specifically for artificial intelligence. This is a simple project where I want to create an artificial intelligence in C#. Given that there is no official library for C# or I did not find it (groq), I decided to implement the part of the connection with artificial intelligence with Python itself. – arman Commented Jan 29 at 7:37
• 2 It is not clear what exactly you mean by "Artificial intelligence" since this is a rather broad term. But there are plenty of AI libraries for both c# and python, so if you want an AI in c# you should probably implement it in c#. If you are using microservices it makes even less sense to mix python and c#, since you would just query your microservice. One of the primary advantages of microservices is allowing different services to use different languages. – JonasH Commented Jan 29 at 7:54
• What I meant was that the service is written entirely in Python for artificial intelligence. In this case, the artificial intelligence is a chatbot using groq. – arman Commented Jan 29 at 8:01

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1 Answer 1

Sorted by: Reset to default 1

You can use Process.Start() and call the python script.

C#

using System.Diagnostics;

class Program
{
    static void Main()
    {
        Console.Write("Enter your name: ");
        string? name = Console.ReadLine();

        var startInfo = new ProcessStartInfo
        {
            FileName = "env\\Scripts\\python.exe",
            Arguments = "app.py",
            UseShellExecute = false,
            RedirectStandardInput = true,
            RedirectStandardOutput = true,
            CreateNoWindow = true
        };

        using var process = new Process { StartInfo = startInfo };
        process.Start();
        
        process.StandardInput.WriteLine(name);
        string result = process.StandardOutput.ReadToEnd();
        
        Console.WriteLine("\nPython returned:");
        Console.WriteLine(result);
    }
}

Python app.py

name = input("Enter name: ")
print(f"Hello, {name} from Python!")

As mentioned in comments: It's doable: At what cost?

1. Performance Overhead.
2. Dependency Management.
3. Maintenance

What is best?

1. Consider rewriting the functionality in C# if possible
2. Consider using REST APIs if the Python service is available that way

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