Exercise 08-18:
Modify Program 8.26 to receive two optional parameters. One is to indicate the character to print before the number, with white space being the default value. The second optional parameter is how many characters to add per level, with 2 as the default value.
Answer:
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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 08/exercise-08-18.py.py
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def print_lists(values, level=0, character=" ", increment=2):
for x in values:
if isinstance(x, int):
print(f"{character * (level * increment)}{x}")
else:
print_lists(x, level + 1, character, increment)
# Usage example:
# print_lists([1, 2, 3, [4, 5, 6, [7, 8, 9]], 10], character="*", increment=4)