ps-mem

import subprocess import os # Example 1: Run ps_mem as a command to get total memory usage # Note: ps_mem often requires root privileges for full accuracy. # This example tries without sudo first. try: # Using a common flag like -t for total or no flags for default output result = subprocess.run(['ps_mem', '-t'], capture_output=True, text=True, check=True) print("\n--- ps_mem (total) output ---") print(result.stdout) except FileNotFoundError: print("Error: 'ps_mem' command not found. Ensure it's installed and in your PATH.") except subprocess.CalledProcessError as e: print(f"Error running ps_mem: {e}") print(f"Stderr: {e.stderr}") print("Note: ps_mem often requires root privileges. Try running with sudo if you encounter permission errors.") # Example 2: Programmatic call to ps_mem's main function (more advanced, requires mocking) # This is illustrative and not typically recommended for simple use cases due to sys.argv/stdout manipulation. import sys from io import StringIO from unittest.mock import patch # Assuming ps_mem is installed and available in your Python environment try: import ps_mem # Capture stdout and mock sys.argv captured_output = StringIO() with patch('sys.argv', ['ps_mem', '-S']), \ patch('sys.stdout', captured_output): # Call the main function with desired arguments (e.g., -S for swap info) # ps_mem.main() might call sys.exit(), so wrap it if needed or catch SystemExit. try: ps_mem.main() except SystemExit as e: if e.code != 0: # 0 means successful exit print(f"ps_mem.main() exited with error code {e.code}") output_from_main = captured_output.getvalue() print("\n--- ps_mem.main() programmatic output ---") print(output_from_main) except ImportError: print("Error: 'ps_mem' module not found. Install with 'pip install ps-mem'.") except Exception as e: print(f"An unexpected error occurred during programmatic call: {e}")