Copy the portion between ----------- and create a validate_ascii.py file with that content.

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import sys

def validate(filename):
    content = None
    defective_lines = []
    with open(filename, "r") as f:
        content = f.readlines()
    if content:
        for i, line in enumerate(content):
            try:
                line.encode('ascii')
            except UnicodeEncodeError:
                defective_lines.append(i+1)

    else:
        print("There was an issue reading the file. Please try again. ")

    return defective_lines

if __name__ == '__main__':
    if len(sys.argv) < 2:
        print("Usage: python3 validate.py ")
        sys.exit(1)
    result = validate(sys.argv[1])
    if not result:
        pass
    else:
        print("Non ascii character at line(s):", result)

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