Question:

Invoking Python script from scons and pass ARGLIST

Solution

Using the Command() function and the ARGUMENTS dictionary that SCons provides, you can run a Python script from SCons and pass it arguments. Here's a detailed tutorial with sample code:

Make a Python script that will accept and process command-line arguments. Let's call it myscript.py. As an illustration:

# myscript.py

import sys

if __name__ == "__main__":

# Access command-line arguments passed to the script

arguments = sys.argv[1:]

# Process and print the arguments

for arg in arguments:

print(arg)

Define how to use the Command() function in your SConstruct file (or SConscript if you're using a more complicated SCons setup) to run the Python script and pass the arguments from SCons:

# SConstruct

import os

import subprocess

# Define the Python script file and its arguments

python_script = 'myscript.py'

arguments = ["arg1", "arg2", "arg3"] # Modify this list with your desired arguments

# Create a custom builder to run the Python script

run_python_script = Command(

source=[],

target=[],

action=[sys.executable, python_script] + arguments,

# Pass the arguments as part of the action

)

# Add the custom builder to the Environment

env = Environment(BUILDERS={'RunPythonScript': run_python_script})

# Add a target to call the custom builder

target = env.RunPythonScript(target=[], source=[])

# Build the target

Default(target)

Run SCons from the command line:

bash

scons

Your custom RunPythonScript builder will be executed as a result, and your myscript.py script will be run with the given arguments. To pass any arguments you require, you can edit the arguments list.

Ensure that your SConstruct file is located in the same directory as myscript.py, or supply the proper path in python_script.

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