mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-24 05:21:09 +00:00
4b79d771cd
* Add more ruff rules * Add more ruff rules * pre-commit: Update ruff v0.0.269 -> v0.0.270 * Apply suggestions from code review * Fix doctest * Fix doctest (ignore whitespace) * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
"""
|
|
Convert speed units
|
|
|
|
https://en.wikipedia.org/wiki/Kilometres_per_hour
|
|
https://en.wikipedia.org/wiki/Miles_per_hour
|
|
https://en.wikipedia.org/wiki/Knot_(unit)
|
|
https://en.wikipedia.org/wiki/Metre_per_second
|
|
"""
|
|
|
|
speed_chart: dict[str, float] = {
|
|
"km/h": 1.0,
|
|
"m/s": 3.6,
|
|
"mph": 1.609344,
|
|
"knot": 1.852,
|
|
}
|
|
|
|
speed_chart_inverse: dict[str, float] = {
|
|
"km/h": 1.0,
|
|
"m/s": 0.277777778,
|
|
"mph": 0.621371192,
|
|
"knot": 0.539956803,
|
|
}
|
|
|
|
|
|
def convert_speed(speed: float, unit_from: str, unit_to: str) -> float:
|
|
"""
|
|
Convert speed from one unit to another using the speed_chart above.
|
|
|
|
"km/h": 1.0,
|
|
"m/s": 3.6,
|
|
"mph": 1.609344,
|
|
"knot": 1.852,
|
|
|
|
>>> convert_speed(100, "km/h", "m/s")
|
|
27.778
|
|
>>> convert_speed(100, "km/h", "mph")
|
|
62.137
|
|
>>> convert_speed(100, "km/h", "knot")
|
|
53.996
|
|
>>> convert_speed(100, "m/s", "km/h")
|
|
360.0
|
|
>>> convert_speed(100, "m/s", "mph")
|
|
223.694
|
|
>>> convert_speed(100, "m/s", "knot")
|
|
194.384
|
|
>>> convert_speed(100, "mph", "km/h")
|
|
160.934
|
|
>>> convert_speed(100, "mph", "m/s")
|
|
44.704
|
|
>>> convert_speed(100, "mph", "knot")
|
|
86.898
|
|
>>> convert_speed(100, "knot", "km/h")
|
|
185.2
|
|
>>> convert_speed(100, "knot", "m/s")
|
|
51.444
|
|
>>> convert_speed(100, "knot", "mph")
|
|
115.078
|
|
"""
|
|
if unit_to not in speed_chart or unit_from not in speed_chart_inverse:
|
|
msg = (
|
|
f"Incorrect 'from_type' or 'to_type' value: {unit_from!r}, {unit_to!r}\n"
|
|
f"Valid values are: {', '.join(speed_chart_inverse)}"
|
|
)
|
|
raise ValueError(msg)
|
|
return round(speed * speed_chart[unit_from] * speed_chart_inverse[unit_to], 3)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod()
|