This Python script uses argparse for command-line argument parsing and matplotlib for plotting. It's designed to generate a graph plotting 'logg' against 'teff' from data loaded from an '.iso' file. The script supports input file specification and an optional output path for saving the generated graph.

from load import load
import matplotlib.pyplot as plt
import argparse
 
 
 
if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Generate a loggTeff Graph for testing")
    parser.add_argument("path", help="path to file", type=str)
    parser.add_argument("-o", "--output", help="path to save figure", type=str)
 
    args = parser.parse_args()
 
    assert ".iso" in args.path
    data, metadata = load(args.path)
 
    fig, ax = plt.subplots(1, 1, figsize=(10, 7))
    ax.plot(data['logg'], data['teff'])