A Pressure Converter Script (#242)

* added the pressure converter script

* added the pressure converter script

* added the pressure converter script
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# Developed and maintained by [Osagie Iyayi](https://github.com/E-wave112)
- This simple program converts between different common units of pressure such as
Pascal(Pa),Bar(bar),Millimeter Mercury(mmHg) and atmosphere(atm).
the test cases are based on the fact that the value of pressure
on it's own can never be negative,except in cases where it is relative to another kind of pressure.
- Run the doctest via the command
```
$ python -m doctest -v Pressure_Converter/pressure_converter_script.py
```

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from typing import Union
def atmospeheres_to_bars(atm: float, unit: str) -> Union[float, str]:
"""
This function converts atm to bar
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
>>> atmospeheres_to_bars(2.5, "atm")
2.533125
>>> atmospeheres_to_bars("12", "atm")
12.158999999999999
>>> atmospeheres_to_bars(0, "atm")
0.0
>>> atmospeheres_to_bars(35, "mmHg")
'Invalid unit'
>>> atmospeheres_to_bars("atmospheres", "atm")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'atmospheres'
"""
if unit == "atm":
bar = float(atm) * 1.01325
return bar
else:
return "Invalid unit"
def bars_to_atmospheres(bar: float, unit: str) -> Union[float, str]:
"""
This function converts bar to atm
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
>>> bars_to_atmospheres(36, "bar")
35.529237601776465
>>> bars_to_atmospheres("57.6", "bar")
56.84678016284234
>>> bars_to_atmospheres(0, "bar")
0.0
>>> bars_to_atmospheres(35, "Pa")
'Invalid unit'
>>> bars_to_atmospheres("barrs", "bar")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'barrs'
"""
if unit == "bar":
atm = float(bar) / 1.01325
return atm
else:
return "Invalid unit"
def atmospheres_to_milimeter_mercury(atm: float, unit: str) -> Union[float, str]:
"""
This function converts atm to mmHg
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
>>> atmospheres_to_milimeter_mercury(2, "atm")
1520.0
>>> atmospheres_to_milimeter_mercury("6.9", "atm")
5244.0
>>> atmospheres_to_milimeter_mercury(0, "atm")
0.0
>>> atmospheres_to_milimeter_mercury(35, "torr")
'Invalid unit'
>>> atmospheres_to_milimeter_mercury("atmos", "atm")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'atmos'
"""
if unit == "atm":
mm_hg = float(atm) * 760
return mm_hg
else:
return "Invalid unit"
def milimeter_mercury_to_atmospheres(mm_hg: float, unit: str) -> Union[float, str]:
"""
This function converts mmHg to atm
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
>>> milimeter_mercury_to_atmospheres(23506.92, "mmHg")
30.93015789473684
>>> milimeter_mercury_to_atmospheres("304000", "mmHg")
400.0
>>> milimeter_mercury_to_atmospheres(0, "mmHg")
0.0
>>> milimeter_mercury_to_atmospheres(35, "bar")
'Invalid unit'
>>> milimeter_mercury_to_atmospheres("merc", "mmHg")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'merc'
"""
if unit == "mmHg":
atm = float(mm_hg) / 760
return atm
else:
return "Invalid unit"
def atmospheres_to_pascals(atm: float, unit: str) -> Union[float, str]:
"""
This function converts atm to Pa
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> atmospheres_to_pascals(5.4, "atm")
547155.0
>>> atmospheres_to_pascals("7.098", "atm")
719204.85
>>> atmospheres_to_pascals(0, "atm")
0.0
>>> atmospheres_to_pascals(35, "Pa")
'Invalid unit'
>>> atmospheres_to_pascals("ats", "atm")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'ats'
"""
if unit == "atm":
pa = float(atm) * 101325
return pa
else:
return "Invalid unit"
def pascals_to_atmospheres(pa: float, unit: str) -> Union[float, str]:
"""
This function converts Pa to atm
Wikipedia reference: https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> pascals_to_atmospheres(202650, "Pa")
2.0
>>> pascals_to_atmospheres("1013250", "Pa")
10.0
>>> pascals_to_atmospheres(0, "Pa")
0.0
>>> pascals_to_atmospheres(35, "mmhg")
'Invalid unit'
>>> pascals_to_atmospheres("Pas", "Pa")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'Pas'
"""
if unit == "Pa":
atm = float(pa) / 101325
return atm
else:
return "Invalid unit"
def bars_to_milimeter_mercury(bar: float, unit: str) -> Union[float, str]:
"""
This function converts bar to mmHg
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
>>> bars_to_milimeter_mercury(3.75, "bar")
2812.725
>>> bars_to_milimeter_mercury("0.82", "bar")
615.0491999999999
>>> bars_to_milimeter_mercury(0, "bar")
0.0
>>> bars_to_milimeter_mercury(3, "atm")
'Invalid unit'
>>> bars_to_milimeter_mercury("brs", "bar")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'brs'
"""
if unit == "bar":
mm_hg = float(bar) * round(760 / 1.01325, 2)
return mm_hg
else:
return "Invalid unit"
def milimeter_mercury_to_bars(mm_hg: float, unit: str) -> Union[float, str]:
"""
This function converts mmHg to bar
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
>>> milimeter_mercury_to_bars(4970.5, "mmHg")
6.626803189078208
>>> milimeter_mercury_to_bars("378", "mmHg")
0.503959683225342
>>> milimeter_mercury_to_bars(0, "mmHg")
0.0
>>> milimeter_mercury_to_bars(3, "bar")
'Invalid unit'
>>> milimeter_mercury_to_bars("brs", "mmHg")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'brs'
"""
if unit == "mmHg":
bar = float(mm_hg) / round(760 / 1.01325, 2)
return bar
else:
return "Invalid unit"
def bars_to_pascals(bar: float, unit: str) -> Union[float, str]:
"""
This function converts bar to Pa
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> bars_to_pascals(0.653, "bar")
65300.0
>>> bars_to_pascals("1.2", "bar")
120000.0
>>> bars_to_pascals(0, "bar")
0.0
>>> bars_to_pascals(3.1, "Pa")
'Invalid unit'
>>> bars_to_pascals("bP", "bar")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'bP'
"""
if unit == "bar":
pa = float(bar) * 100000
return pa
else:
return "Invalid unit"
def pascals_to_bars(pa: float, unit: str) -> Union[float, str]:
"""
This function converts Pa to bar
Wikipedia reference: https://en.wikipedia.org/wiki/Bar_(unit)
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> pascals_to_bars(45000, "Pa")
0.45
>>> pascals_to_bars("1200000", "Pa")
12.0
>>> pascals_to_bars(0, "Pa")
0.0
>>> pascals_to_bars(3.1, "mmHg")
'Invalid unit'
>>> pascals_to_bars("pass", "Pa")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'pass'
"""
if unit == "Pa":
bar = float(pa) / 100000
return bar
else:
return "Invalid unit"
def milimeter_mercury_to_pascals(mm_hg: float, unit: str) -> Union[float, str]:
"""
This function converts mmHg to Pa
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> milimeter_mercury_to_pascals(25, "mmHg")
3333.0
>>> milimeter_mercury_to_pascals("652", "mmHg")
86924.64
>>> milimeter_mercury_to_pascals(0, "mmHg")
0.0
>>> milimeter_mercury_to_pascals(342.1, "bar")
'Invalid unit'
>>> milimeter_mercury_to_pascals("mercurium", "mmHg")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'mercurium'
"""
if unit == "mmHg":
pa = float(mm_hg) * round(101325 / 760, 2)
return pa
else:
return "Invalid unit"
def pascals_to_milimeter_mercury(pa: float, unit: str) -> Union[float, str]:
"""
This function converts Pa to mmHg
Wikipedia reference: https://en.wikipedia.org/wiki/Millimetre_of_mercury
Wikipedia reference: https://en.wikipedia.org/wiki/Pascal_(unit)
>>> pascals_to_milimeter_mercury(153000, "Pa")
1147.6147614761476
>>> pascals_to_milimeter_mercury("97650.8", "Pa")
732.4542454245425
>>> pascals_to_milimeter_mercury(0, "Pa")
0.0
>>> pascals_to_milimeter_mercury(342.1, "mmhg")
'Invalid unit'
>>> pascals_to_milimeter_mercury("merc", "Pa")
Traceback (most recent call last):
...
ValueError: could not convert string to float: 'merc'
"""
if unit == "Pa":
mm_hg = float(pa) / round(101325 / 760, 2)
return mm_hg
else:
return "Invalid unit"
if __name__ == "__main__":
import doctest
doctest.testmod()

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doctest

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@ -185,6 +185,7 @@ So far, the following projects have been integrated to this repo:
|[csv_to_json](https://github.com/hastagAB/Awesome-Python-Scripts/tree/master/csv_to_json)|[MoiZ](https://github.com/TechBoyy6)|
|[Battery_notification](https://github.com/hastagABAwesome-Python-Scripts/Battery_notification/)|[Krishna Sharma](https://github.com/krishnasharma1386)|
|[Steg_Tool](https://github.com/hastagABAwesome-Python-Scripts/Steg_Tool/)|[Shankar JP](https://github.com/shankarjp)|
|[Pressure_Converter](https://github.com/E-wave112/Awesome-Python-Scripts/tree/master/Pressure_Converter)|[E-Wave](https://github.com/E-wave112)|
## How to use :