How to Dynamically Pass Multiple Arguments to Python's subprocess.run() on Windows

---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Python subprocess run() with multiple arguments on Windows

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---

The Problem: Dynamic Argument Passing

Suppose you have a game that is typically launched with a variety of command-line arguments. For example, the target line in Windows might look something like this:

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

You have a fixed configuration source (like a variable containing the executable path) and a dynamic list of arguments that depends on the user's previous selections, which can result in a lengthy parameter list.

Previous Attempts

You've attempted the following approaches:

Using a Single String for Command:

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

Attempting to Print Arguments Using List Comprehension:

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

This led to a syntax error because of incorrect list comprehension usage.

The Solution: Building the Argument List Dynamically

Step 1: Initialize Your Argument List

First, create a list to hold all of your arguments:

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

Step 2: Construct the Command

You will initiate the subprocess with the executable path followed by all the arguments from the list:

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

Step 3: Handle Multi-Word Arguments

If some of your arguments require values, such as "--arg3 50", you need to split these into separate entries. For example:

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

Example Code

Putting it all together, here's a complete example that incorporates the above steps:

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

Summing Up

Whether you're launching a game, a tool, or any other executable, managing parameters efficiently will streamline your scripts and enhance functionality. Happy coding!