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Dataclass solution in Clear category for Voice TV Control by r_tchaik
from dataclasses import dataclass
@dataclass
class VoiceCommand:
channels: list
current: int = 0
def state(self, channel):
self.current = channel
return self.channels[self.current]
def first_channel(self):
return self.state(0)
def last_channel(self):
return self.state(len(self.channels) - 1)
def turn_channel(self, channel):
return self.state(channel - 1)
def next_channel(self):
return self.state((self.current + 1) % len(self.channels))
def previous_channel(self):
return self.state((self.current - 1) % len(self.channels))
def current_channel(self):
return self.state(self.current)
def is_exist(self, channel):
return 'Yes' if channel in self.channels or 0 < channel <= len(self.channels) else 'No'
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
CHANNELS = ["BBC", "Discovery", "TV1000"]
controller = VoiceCommand(CHANNELS)
assert controller.first_channel() == "BBC"
assert controller.last_channel() == "TV1000"
assert controller.turn_channel(1) == "BBC"
assert controller.next_channel() == "Discovery"
assert controller.previous_channel() == "BBC"
assert controller.current_channel() == "BBC"
assert controller.is_exist(4) == "No"
assert controller.is_exist("TV1000") == "Yes"
print("Coding complete? Let's try tests!")
Aug. 19, 2020
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