How to Run a C+ + Build File Inside a Python Script?

Learn how to seamlessly integrate C+ + code execution within your Python scripts using the subprocess module to handle build files efficiently.
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How to Run a C+ + Build File Inside a Python Script?

Do you ever find yourself needing to run a C+ + build file while working within a Python environment? Whether you’re looking to process multiple files or utilize a pre-built algorithm, integrating the two languages can seem daunting at first. In today’s blog, we’ll explore a straightforward method to achieve this, specifically focusing on how to execute a C+ + build file from your Python script.

The Problem at Hand

Imagine you have an algorithm written in C+ + designed to convert mesh models into watertight structures, triggered by specific input files. The process requires running a C+ + command line tool similar to the following:

[[See Video to Reveal this Text or Code Snippet]]

In this case:

input.obj: This is the input file containing the mesh model.

manifold.obj: This is the output file generated by your C+ + algorithm after processing.

Now, let’s say you have a multitude of input files located in various directories, and you wish to execute the C+ + program directly from within your Python script. Let's look into a structured way to implement this.

Breaking Down the Solution

To run a C+ + executable from your Python script, Python's subprocess module comes to the rescue. Below is a step-by-step guide to get your script running the C+ + compiled file.

Step 1: Import the Subprocess Module

First off, you need to ensure that you import the necessary module at the beginning of your script:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Modify Your Function

Now, let’s adjust your existing function input_object() to include a call to the subprocess.run() method. This method allows you to run shell commands directly from within Python.

Here's your modified code snippet:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Breaking Down the Command

In the provided code:

The subprocess.run() function takes the command you wish to run as a string. We construct this command using an f-string where {y} is dynamically replaced with the current model being processed.

The argument shell=True is used to allow the command to be executed in the shell where the build file operates.

Step 4: Run Your Script

Save your script and execute it. Python will now iterate through your directories and run the specified C+ + program with the appropriate input files as it goes.

Conclusion

By following these steps, you're now equipped to run a C+ + build file from within your Python script seamlessly. This method allows you not only to automate the process of handling multiple files but also to efficiently leverage existing algorithms written in C+ + .

Feel free to customize the paths and filenames according to your project needs. Happy coding!

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