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105 lines
3.5 KiB
Python
105 lines
3.5 KiB
Python
"""
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Conversion of length units.
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Available Units:- Metre,Kilometre,Feet,Inch,Centimeter,Yard,Foot,Mile,Millimeter
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USAGE :
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-> Import this file into their respective project.
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-> Use the function length_conversion() for conversion of length units.
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-> Parameters :
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-> value : The number of from units you want to convert
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-> from_type : From which type you want to convert
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-> to_type : To which type you want to convert
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REFERENCES :
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Meter
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Kilometer
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Feet
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Inch
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Centimeter
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Yard
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Foot
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Mile
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-> Wikipedia reference: https://en.wikipedia.org/wiki/Millimeter
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"""
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from collections import namedtuple
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from_to = namedtuple("from_to", "from_ to")
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METRIC_CONVERSION = {
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"meter": from_to(1, 1),
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"kilometer": from_to(1000, 0.001),
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"feet": from_to(0.3048, 3.28084),
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"inch": from_to(0.0254, 39.3701),
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"centimeter": from_to(0.01, 100),
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"yard": from_to(0.9144, 1.09361),
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"foot": from_to(0.3048, 3.28084),
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"mile": from_to(1609.34, 0.000621371),
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"millimeter": from_to(0.001, 1000),
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}
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def length_conversion(value: float, from_type: str, to_type: str) -> float:
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"""
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Conversion between length units.
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>>> length_conversion(4, "meter", "feet")
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13.12336
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>>> length_conversion(1, "meter", "kilometer")
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0.001
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>>> length_conversion(1, "kilometer", "inch")
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39370.1
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>>> length_conversion(3, "kilometer", "mile")
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1.8641130000000001
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>>> length_conversion(2, "feet", "meter")
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0.6096
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>>> length_conversion(4, "feet", "yard")
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1.333329312
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>>> length_conversion(1, "inch", "meter")
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0.0254
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>>> length_conversion(2, "inch", "mile")
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3.15656468e-05
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>>> length_conversion(2, "centimeter", "millimeter")
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20.0
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>>> length_conversion(2, "centimeter", "yard")
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0.0218722
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>>> length_conversion(4, "yard", "meter")
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3.6576
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>>> length_conversion(4, "yard", "kilometer")
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0.0036576
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>>> length_conversion(3, "foot", "meter")
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0.9144000000000001
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>>> length_conversion(3, "foot", "inch")
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36.00001944
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>>> length_conversion(4, "mile", "kilometer")
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6.43736
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>>> length_conversion(2, "mile", "inch")
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126719.753468
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>>> length_conversion(3, "millimeter", "centimeter")
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0.3
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>>> length_conversion(3, "millimeter", "inch")
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0.1181103
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>>> length_conversion(4, "wrongUnit", "inch")
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Traceback (most recent call last):
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...
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ValueError: Invalid 'from_type' value: 'wrongUnit' Supported values are:
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meter, kilometer, feet, inch, centimeter, yard, foot, mile, millimeter
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"""
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if from_type not in METRIC_CONVERSION:
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raise ValueError(
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f"Invalid 'from_type' value: {from_type!r} Supported values are:\n"
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+ ", ".join(METRIC_CONVERSION)
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)
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if to_type not in METRIC_CONVERSION:
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raise ValueError(
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f"Invalid 'to_type' value: {to_type!r}. Supported values are:\n"
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+ ", ".join(METRIC_CONVERSION)
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)
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return value * METRIC_CONVERSION[from_type].from_ * METRIC_CONVERSION[to_type].to
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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