#!/usr/bin/env python
import os,sys
from pprint import pprint
from math import sin, pi
import random


hours = 24
grid_num = 9
base_temperature=20
temperature_sections = []


def simulateTemperatureChange(hr_of_day, change_cofficient =1):
  # 3. Use if-else statements to apply the temperature changes based on the time of day.
  # morning (6-11)
  # afternoon (12-17)
  # evening (18-22)
  # night (23-5)
  if (hr_of_day >= 6 and hr_of_day <= 11):
    change_cofficient = -1
  elif (hr_of_day > 11 and hr_of_day <= 17):
    change_cofficient = 3
  elif (hr_of_day > 17 and hr_of_day <= 22):
    change_cofficient = 2
  else:
    change_cofficient = 1

  return base_temperature  + (random.uniform(-change_cofficient ,change_cofficient) * sin(hr_of_day/24.0* pi))

def initRoomTemperature():
  # 1. Initialize the temperature of the room.
  return [[0]*grid_num]*hours

# 2. Use nested loops to update the temperature of each section of the room at each hour.
def updateTemperature():
  # 5. Use a while loop to simulate the temperature changes over a 24-hour period.
  hr_of_day = 0
  while hr_of_day < hours:
    for section in range(grid_num):
      temperature_sections[hr_of_day][section] = simulateTemperatureChange(hr_of_day)
    hr_of_day += 1

# 4. Print the temperature distribution in the room at each hour.
def printTemperatureOfRooms():
  for hr_of_day in range(hours):
    print(f'hour {hr_of_day+1}')
    for section in range(0,grid_num,3):
      print(f'{temperature_sections[hr_of_day][section]:.1f}', end=' ')
      print(f'{temperature_sections[hr_of_day][section+1]:.1f}', end=' ')
      print(f'{temperature_sections[hr_of_day][section+2]:.1f}', end=' ')
      print()
    print('')
temperature_sections=initRoomTemperature()
updateTemperature()
printTemperatureOfRooms()