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from decimal import Decimal, ROUND_HALF_UP
def round_half(number):
"""
Python's round() function behaves differently in Python 2 and 3
This method makes it consistent.
:param number: The number to round
"""
return Decimal(number).quantize(Decimal("1"), rounding=ROUND_HALF_UP)
def fahrenheit_to_celsius(fahrenheit):
"""
Convert Fahrenheit to Celsius
:param fahrenheit: The temperature to convert to Celsius
"""
return int(round_half((fahrenheit - 32) / 1.8))
def fahrenheit_to_nuheat(fahrenheit):
"""
Convert Fahrenheit to a temperature value that NuHeat understands
Formula f(x) = ((x - 33) * 56) + 33
:param fahrenheit: The temperature to convert to NuHeat
"""
return int(round_half(((fahrenheit - 33) * 56) + 33))
def celsius_to_fahrenheit(celsius):
"""
Convert Celsius to Fahrenheit
:param celsius: The temperature to convert to Fahrenheit
"""
return int(round_half(celsius * 1.8 + 32))
def celsius_to_nuheat(celsius):
"""
Convert Celsius to a temperature value that NuHeat understands
Formula f(x) = ((x - 33) * 56) + 33
:param celsius: The temperature to convert to NuHeat
"""
fahrenheit = celsius_to_fahrenheit(celsius)
return int(round_half(((fahrenheit - 33) * 56) + 33))
def nuheat_to_fahrenheit(nuheat_temperature):
"""
Convert the NuHeat temp value to Fahrenheit
Formula f(x) = ((x - 33) / 56) + 33
:param nuheat_temperature: The temperature to convert to Fahrenheit
"""
return int(round_half(((nuheat_temperature - 33) / 56.0) + 33))
def nuheat_to_celsius(nuheat_temperature):
"""
Convert the NuHeat temp value to Celsius
:param nuheat_temperature: The temperature to convert to Celsius
"""
fahrenheit = nuheat_to_fahrenheit(nuheat_temperature)
return fahrenheit_to_celsius(fahrenheit)
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