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""" | ||
Conversion of pressure units. | ||
Available Units:- Pascal,Bar,Kilopascal,Megapascal,psi(pound per square inch), | ||
inHg(in mercury column),torr,atm | ||
USAGE : | ||
-> Import this file into their respective project. | ||
-> Use the function pressure_conversion() for conversion of pressure units. | ||
-> Parameters : | ||
-> value : The number of from units you want to convert | ||
-> from_type : From which type you want to convert | ||
-> to_type : To which type you want to convert | ||
REFERENCES : | ||
-> Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit) | ||
-> Wikipedia reference: https://en.wikipedia.org/wiki/Pound_per_square_inch | ||
-> Wikipedia reference: https://en.wikipedia.org/wiki/Inch_of_mercury | ||
-> Wikipedia reference: https://en.wikipedia.org/wiki/Torr | ||
-> https://en.wikipedia.org/wiki/Standard_atmosphere_(unit) | ||
-> https://msestudent.com/what-are-the-units-of-pressure/ | ||
-> https://www.unitconverters.net/pressure-converter.html | ||
""" | ||
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from typing import NamedTuple | ||
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class FromTo(NamedTuple): | ||
from_factor: float | ||
to_factor: float | ||
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PRESSURE_CONVERSION = { | ||
"atm": FromTo(1, 1), | ||
"pascal": FromTo(0.0000098, 101325), | ||
"bar": FromTo(0.986923, 1.01325), | ||
"kilopascal": FromTo(0.00986923, 101.325), | ||
"megapascal": FromTo(9.86923, 0.101325), | ||
"psi": FromTo(0.068046, 14.6959), | ||
"inHg": FromTo(0.0334211, 29.9213), | ||
"torr": FromTo(0.00131579, 760), | ||
} | ||
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def pressure_conversion(value: float, from_type: str, to_type: str) -> float: | ||
""" | ||
Conversion between pressure units. | ||
>>> pressure_conversion(4, "atm", "pascal") | ||
405300 | ||
>>> pressure_conversion(1, "pascal", "psi") | ||
0.00014401981999999998 | ||
>>> pressure_conversion(1, "bar", "atm") | ||
0.986923 | ||
>>> pressure_conversion(3, "kilopascal", "bar") | ||
0.029999991892499998 | ||
>>> pressure_conversion(2, "megapascal", "psi") | ||
290.074434314 | ||
>>> pressure_conversion(4, "psi", "torr") | ||
206.85984 | ||
>>> pressure_conversion(1, "inHg", "atm") | ||
0.0334211 | ||
>>> pressure_conversion(1, "torr", "psi") | ||
0.019336718261000002 | ||
>>> pressure_conversion(4, "wrongUnit", "atm") | ||
Traceback (most recent call last): | ||
... | ||
ValueError: Invalid 'from_type' value: 'wrongUnit' Supported values are: | ||
atm, pascal, bar, kilopascal, megapascal, psi, inHg, torr | ||
""" | ||
if from_type not in PRESSURE_CONVERSION: | ||
raise ValueError( | ||
f"Invalid 'from_type' value: {from_type!r} Supported values are:\n" | ||
+ ", ".join(PRESSURE_CONVERSION) | ||
) | ||
if to_type not in PRESSURE_CONVERSION: | ||
raise ValueError( | ||
f"Invalid 'to_type' value: {to_type!r}. Supported values are:\n" | ||
+ ", ".join(PRESSURE_CONVERSION) | ||
) | ||
return ( | ||
value | ||
* PRESSURE_CONVERSION[from_type].from_factor | ||
* PRESSURE_CONVERSION[to_type].to_factor | ||
) | ||
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if __name__ == "__main__": | ||
import doctest | ||
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doctest.testmod() |