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add Rankine scale (#2232)

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* add Rankine scale
black formatting

* add Wikipedia links

* add optional rounding, default to 2 digits

* fix variable name

* fixed variable name; helps to stage before commiting
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lance-pyles 2020-07-24 13:55:18 -07:00 committed by GitHub
parent a823a86a29
commit 99b40e2a26
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1 changed files with 199 additions and 17 deletions
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216
conversions/temperature_conversions.py
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@ -1,9 +1,11 @@
""" Convert between different units of temperature """
def celsius_to_fahrenheit(celsius: float) -> float:
def celsius_to_fahrenheit(celsius: float, ndigits: int = 2) -> float:
"""
Convert a given value from Celsius to Fahrenheit and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
>>> celsius_to_fahrenheit(-40.0)
-40.0
@ -20,12 +22,54 @@ def celsius_to_fahrenheit(celsius: float) -> float:
...
ValueError: could not convert string to float: 'celsius'
"""
return round((float(celsius) * 9 / 5) + 32, 2)
return round((float(celsius) * 9 / 5) + 32, ndigits)
def fahrenheit_to_celsius(fahrenheit: float) -> float:
def celsius_to_kelvin(celsius: float, ndigits: int = 2) -> float:
"""
Convert a given value from Celsius to Kelvin and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
>>> celsius_to_kelvin(0)
273.15
>>> celsius_to_kelvin(20.0)
293.15
>>> celsius_to_kelvin("40")
313.15
>>> celsius_to_kelvin("celsius")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'celsius'
"""
return round(float(celsius) + 273.15, ndigits)
def celsius_to_rankine(celsius: float, ndigits: int = 2) -> float:
"""
Convert a given value from Celsius to Rankine and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
>>> celsius_to_rankine(0)
491.67
>>> celsius_to_rankine(20.0)
527.67
>>> celsius_to_rankine("40")
563.67
>>> celsius_to_rankine("celsius")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'celsius'
"""
return round((float(celsius) * 9 / 5) + 491.67, ndigits)
def fahrenheit_to_celsius(fahrenheit: float, ndigits: int = 2) -> float:
"""
Convert a given value from Fahrenheit to Celsius and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
>>> fahrenheit_to_celsius(0)
-17.78
@ -44,30 +88,66 @@ def fahrenheit_to_celsius(fahrenheit: float) -> float:
...
ValueError: could not convert string to float: 'fahrenheit'
"""
return round((float(fahrenheit) - 32) * 5 / 9, 2)
return round((float(fahrenheit) - 32) * 5 / 9, ndigits)
def celsius_to_kelvin(celsius: float) -> float:
def fahrenheit_to_kelvin(fahrenheit: float, ndigits: int = 2) -> float:
"""
Convert a given value from Celsius to Kelvin and round it to 2 decimal places.
Convert a given value from Fahrenheit to Kelvin and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
>>> celsius_to_kelvin(0)
273.15
>>> celsius_to_kelvin(20.0)
293.15
>>> celsius_to_kelvin("40")
313.15
>>> celsius_to_kelvin("celsius")
>>> fahrenheit_to_kelvin(0)
255.37
>>> fahrenheit_to_kelvin(20.0)
266.48
>>> fahrenheit_to_kelvin(40.0)
277.59
>>> fahrenheit_to_kelvin(60)
288.71
>>> fahrenheit_to_kelvin(80)
299.82
>>> fahrenheit_to_kelvin("100")
310.93
>>> fahrenheit_to_kelvin("fahrenheit")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'celsius'
ValueError: could not convert string to float: 'fahrenheit'
"""
return round(float(celsius) + 273.15, 2)
return round(((float(fahrenheit) - 32) * 5 / 9) + 273.15, ndigits)
def kelvin_to_celsius(kelvin: float) -> float:
def fahrenheit_to_rankine(fahrenheit: float, ndigits: int = 2) -> float:
"""
Convert a given value from Fahrenheit to Rankine and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
>>> fahrenheit_to_rankine(0)
459.67
>>> fahrenheit_to_rankine(20.0)
479.67
>>> fahrenheit_to_rankine(40.0)
499.67
>>> fahrenheit_to_rankine(60)
519.67
>>> fahrenheit_to_rankine(80)
539.67
>>> fahrenheit_to_rankine("100")
559.67
>>> fahrenheit_to_rankine("fahrenheit")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'fahrenheit'
"""
return round(float(fahrenheit) + 459.67, ndigits)
def kelvin_to_celsius(kelvin: float, ndigits: int = 2) -> float:
"""
Convert a given value from Kelvin to Celsius and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
>>> kelvin_to_celsius(273.15)
0.0
@ -80,9 +160,111 @@ def kelvin_to_celsius(kelvin: float) -> float:
...
ValueError: could not convert string to float: 'kelvin'
"""
return round(float(kelvin) - 273.15, 2)
return round(float(kelvin) - 273.15, ndigits)
def kelvin_to_fahrenheit(kelvin: float, ndigits: int = 2) -> float:
"""
Convert a given value from Kelvin to Fahrenheit and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
>>> kelvin_to_fahrenheit(273.15)
32.0
>>> kelvin_to_fahrenheit(300)
80.33
>>> kelvin_to_fahrenheit("315.5")
108.23
>>> kelvin_to_fahrenheit("kelvin")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'kelvin'
"""
return round(((float(kelvin) - 273.15) * 9 / 5) + 32, ndigits)
def kelvin_to_rankine(kelvin: float, ndigits: int = 2) -> float:
"""
Convert a given value from Kelvin to Rankine and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
>>> kelvin_to_rankine(0)
0.0
>>> kelvin_to_rankine(20.0)
36.0
>>> kelvin_to_rankine("40")
72.0
>>> kelvin_to_rankine("kelvin")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'kelvin'
"""
return round((float(kelvin) * 9 / 5), ndigits)
def rankine_to_celsius(rankine: float, ndigits: int = 2) -> float:
"""
Convert a given value from Rankine to Celsius and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
Wikipedia reference: https://en.wikipedia.org/wiki/Celsius
>>> rankine_to_celsius(273.15)
-121.4
>>> rankine_to_celsius(300)
-106.48
>>> rankine_to_celsius("315.5")
-97.87
>>> rankine_to_celsius("rankine")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'rankine'
"""
return round((float(rankine) - 491.67) * 5 / 9, ndigits)
def rankine_to_fahrenheit(rankine: float, ndigits: int = 2) -> float:
"""
Convert a given value from Rankine to Fahrenheit and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
Wikipedia reference: https://en.wikipedia.org/wiki/Fahrenheit
>>> rankine_to_fahrenheit(273.15)
-186.52
>>> rankine_to_fahrenheit(300)
-159.67
>>> rankine_to_fahrenheit("315.5")
-144.17
>>> rankine_to_fahrenheit("rankine")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'rankine'
"""
return round(float(rankine) - 459.67, ndigits)
def rankine_to_kelvin(rankine: float, ndigits: int = 2) -> float:
"""
Convert a given value from Rankine to Kelvin and round it to 2 decimal places.
Wikipedia reference: https://en.wikipedia.org/wiki/Rankine_scale
Wikipedia reference: https://en.wikipedia.org/wiki/Kelvin
>>> rankine_to_kelvin(0)
0.0
>>> rankine_to_kelvin(20.0)
11.11
>>> rankine_to_kelvin("40")
22.22
>>> rankine_to_kelvin("rankine")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'rankine'
"""
return round((float(rankine) * 5 / 9), ndigits)
if __name__ == "__main__":
import doctest
doctest.testmod()