Exercise 09-01:

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# Python From Scratch
# Author: Nilo Ney Coutinho Menezes
# Editora Novatec (c) 2010-2025 - LogiKraft 2025
# Site: https://pythonfromscratch.com
# ISBN: 978-85-7522-949-1 (Paperback), 978-85-7522-950-7 (hardcover), 978-85-7522-951-4 (ebook)
#
# File: chapter 09/exercise-09-01.py.py
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import sys

# Check if the parameter was passed
if len(sys.argv) != 2:  # Remember that the program name is the first in the list
    print("\nUsage: e09-01.py filename\n\n")
else:
    name = sys.argv[1]
    file = open(name, "r")
    for line in file.readlines():
        # Since the line ends with ENTER,
        # we remove the last character before printing
        print(line[:-1])
    file.close()

# Don't forget to read about encodings
# Depending on the file type and your operating system,
# it may not print correctly on screen.