Exercise 10-02:
Currently, the Television class initializes the channel with 2. Modify the Television class to receive the initial channel in its constructor as an optional parameter.
Answer:
##############################################################################
# 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 10/exercise-10-02.py.py
##############################################################################
class Television:
def __init__(self, initial_channel, min, max):
self.powered = False
self.channel = initial_channel
self.min_channel = min
self.max_channel = max
def channel_down(self):
if self.channel - 1 >= self.min_channel:
self.channel -= 1
def channel_up(self):
if self.channel + 1 <= self.max_channel:
self.channel += 1
tv = Television(5, 1, 99)
print(tv.channel)