Here are a few question-based article titles that fit the content: * How to Execute Python Scripts with User Input Using Subprocess? * Capturing Output from Python Scripts: A Guide to Subprocess Tech

Execute Python Scripts with User Input Using Subprocess

When executing a Python script (a.py) from another script (b.py) via subprocess, capturing the script's output can be a challenge. This article provides alternative methods to retrieve the desired output.

Method 1: Passing Input and Capturing Output with Subprocess

<code class="python">import os
import sys
from subprocess import check_output

script_path = os.path.join(get_script_dir(), 'a.py')
output = check_output([sys.executable, script_path],
                      input='\n'.join(['query 1', 'query 2']),
                      universal_newlines=True)</code>

Method 2: Importing Modules and Calling Functions

A more flexible approach is to import the target module (a) and call a specific function within it. Ensure a.py uses the if __name__ == "__main__" guard to prevent execution of undesired code upon importing.

<code class="python">import a

result = [a.search(query) for query in ['query 1', 'query 2']]</code>

Method 3: Multiprocessing for Parallel Query Execution

If query execution is CPU-intensive, you can utilize multiprocessing to run queries simultaneously:

<code class="python">from multiprocessing import freeze_support, Pool
import a

if __name__ == "__main__":
   freeze_support()
   pool = Pool() # use all available CPUs
   result = pool.map(a.search, ['query 1', 'query 2'])</code>

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