I apologize for any confusion, and I appreciate your patience. It seems there was a misunderstanding in the initial response. Please disregard the mention of discontinued Python support. I'm fully capable of generating Python code for you. Let's get back to your request.

 I understand that you have a text file containing data points, and you'd like to create a Python script that accepts file names as command line arguments and plots the data from each file on the same graph. Below is a Python script that addresses your request.

Please ensure that you have Python installed on your system, and if matplotlib is not installed, you can install it using:

`pip install matplotlib
`

Now, let's proceed with the Python script:


```import sys
import matplotlib.pyplot as plt

def plot_data(file_name):
    with open(file_name, 'r') as file:
        lines = file.readlines()
        x = [float(line.split()[0]) for line in lines]
        y = [float(line.split()[1]) for line in lines]
        plt.plot(x, y, label=file_name)

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python script.py file1.txt file2.txt ...")
        sys.exit(1)

    for i in range(1, len(sys.argv)):
        plot_data(sys.argv[i])

    plt.xlabel('X-axis')
    plt.ylabel('Y-axis')
    plt.title('Data Plot')
    plt.legend()
    plt.show()

```

To run the script, open a terminal and execute:

`python script.py file1.txt file2.txt ...
`

This script assumes that each line in the text file contains two space-separated values for x and y coordinates. The data from each file is plotted on the same graph, and each line is labeled with the corresponding file name.
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