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"""

Conversion of volume units.

Available Units:- Cubic metre,Litre,KiloLitre,Gallon,Cubic yard,Cubic foot,cup

USAGE :

-> Import this file into their respective project.

-> Use the function length_conversion() for conversion of volume 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/Cubic_metre

-> Wikipedia reference: https://en.wikipedia.org/wiki/Litre

-> Wikipedia reference: https://en.wiktionary.org/wiki/kilolitre

-> Wikipedia reference: https://en.wikipedia.org/wiki/Gallon

-> Wikipedia reference: https://en.wikipedia.org/wiki/Cubic_yard

-> Wikipedia reference: https://en.wikipedia.org/wiki/Cubic_foot

-> Wikipedia reference: https://en.wikipedia.org/wiki/Cup_(unit)

"""

from collections import namedtuple

from_to = namedtuple("from_to", "from_ to")

METRIC_CONVERSION = {

"cubicmeter": from_to(1, 1),

"litre": from_to(0.001, 1000),

"kilolitre": from_to(1, 1),

"gallon": from_to(0.00454, 264.172),

"cubicyard": from_to(0.76455, 1.30795),

"cubicfoot": from_to(0.028, 35.3147),

"cup": from_to(0.000236588, 4226.75),

}

def volume_conversion(value: float, from_type: str, to_type: str) -> float:

"""

Conversion between volume units.

>>> volume_conversion(4, "cubicmeter", "litre")

4000

>>> volume_conversion(1, "litre", "gallon")

0.264172

>>> volume_conversion(1, "kilolitre", "cubicmeter")

>>> volume_conversion(3, "gallon", "cubicyard")

0.017814279

>>> volume_conversion(2, "cubicyard", "litre")

1529.1

>>> volume_conversion(4, "cubicfoot", "cup")

473.396

>>> volume_conversion(1, "cup", "kilolitre")

0.000236588

>>> volume_conversion(4, "wrongUnit", "litre")

Traceback (most recent call last):

File "/usr/lib/python3.8/doctest.py", line 1336, in __run

exec(compile(example.source, filename, "single",

File "<doctest __main__.volume_conversion[7]>", line 1, in <module>

volume_conversion(4, "wrongUnit", "litre")

File "<string>", line 62, in volume_conversion

ValueError: Invalid 'from_type' value: 'wrongUnit' Supported values are:

cubicmeter, litre, kilolitre, gallon, cubicyard, cubicfoot, cup

"""

if from_type not in METRIC_CONVERSION:

raise ValueError(

f"Invalid 'from_type' value: {from_type!r} Supported values are:\n"

+ ", ".join(METRIC_CONVERSION)

)

if to_type not in METRIC_CONVERSION:

raise ValueError(

f"Invalid 'to_type' value: {to_type!r}. Supported values are:\n"

+ ", ".join(METRIC_CONVERSION)

)

return value * METRIC_CONVERSION[from_type].from_ * METRIC_CONVERSION[to_type].to

if __name__ == "__main__":

import doctest

doctest.testmod()

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