commentify.py

def commentify(text, start, end, width=32, fill="="):
    content = f' {text} '.center(width - len(start) - len(end) - 2, fill)
    return f'{start} {content} {end}'

while True:
    text = input('Enter text: ')
    if not text:
        break
    print(commentify(text.upper(), '//', '//', width=42))