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length_conversion.py: Deal with uppercase and abbreviations (#5433)

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* length_conversion.py: Deal with uppercase and abbreviations

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
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Christian Clauss 2021-10-19 11:11:49 +02:00 committed by GitHub
parent 4880931c24
commit f7804334f1
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2 changed files with 40 additions and 22 deletions
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2
DIRECTORY.md
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@ -113,7 +113,7 @@
* [Decimal To Octal](https://github.com/TheAlgorithms/Python/blob/master/conversions/decimal_to_octal.py)
* [Hex To Bin](https://github.com/TheAlgorithms/Python/blob/master/conversions/hex_to_bin.py)
* [Hexadecimal To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/hexadecimal_to_decimal.py)
* [Length Conversions](https://github.com/TheAlgorithms/Python/blob/master/conversions/length_conversions.py)
* [Length Conversion](https://github.com/TheAlgorithms/Python/blob/master/conversions/length_conversion.py)
* [Molecular Chemistry](https://github.com/TheAlgorithms/Python/blob/master/conversions/molecular_chemistry.py)
* [Octal To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/octal_to_decimal.py)
* [Prefix Conversions](https://github.com/TheAlgorithms/Python/blob/master/conversions/prefix_conversions.py)

60
conversions/length_conversions.py → conversions/length_conversion.py
View File

@ -26,16 +26,28 @@ from collections import namedtuple
from_to = namedtuple("from_to", "from_ to")
TYPE_CONVERSION = {
"millimeter": "mm",
"centimeter": "cm",
"meter": "m",
"kilometer": "km",
"inch": "in",
"inche": "in", # Trailing 's' has been stripped off
"feet": "ft",
"foot": "ft",
"yard": "yd",
"mile": "mi",
}
METRIC_CONVERSION = {
"meter": from_to(1, 1),
"kilometer": from_to(1000, 0.001),
"feet": from_to(0.3048, 3.28084),
"inch": from_to(0.0254, 39.3701),
"centimeter": from_to(0.01, 100),
"yard": from_to(0.9144, 1.09361),
"foot": from_to(0.3048, 3.28084),
"mile": from_to(1609.34, 0.000621371),
"millimeter": from_to(0.001, 1000),
"mm": from_to(0.001, 1000),
"cm": from_to(0.01, 100),
"m": from_to(1, 1),
"km": from_to(1000, 0.001),
"in": from_to(0.0254, 39.3701),
"ft": from_to(0.3048, 3.28084),
"yd": from_to(0.9144, 1.09361),
"mi": from_to(1609.34, 0.000621371),
}
@ -43,7 +55,9 @@ def length_conversion(value: float, from_type: str, to_type: str) -> float:
"""
Conversion between length units.
>>> length_conversion(4, "meter", "feet")
>>> length_conversion(4, "METER", "FEET")
13.12336
>>> length_conversion(4, "M", "FT")
13.12336
>>> length_conversion(1, "meter", "kilometer")
0.001
@ -73,29 +87,33 @@ def length_conversion(value: float, from_type: str, to_type: str) -> float:
36.00001944
>>> length_conversion(4, "mile", "kilometer")
6.43736
>>> length_conversion(2, "mile", "inch")
>>> length_conversion(2, "miles", "InChEs")
126719.753468
>>> length_conversion(3, "millimeter", "centimeter")
0.3
>>> length_conversion(3, "millimeter", "inch")
>>> length_conversion(3, "mm", "in")
0.1181103
>>> length_conversion(4, "wrongUnit", "inch")
Traceback (most recent call last):
...
ValueError: Invalid 'from_type' value: 'wrongUnit' Supported values are:
meter, kilometer, feet, inch, centimeter, yard, foot, mile, millimeter
ValueError: Invalid 'from_type' value: 'wrongUnit'.
Conversion abbreviations are: mm, cm, m, km, in, ft, yd, mi
"""
if from_type not in METRIC_CONVERSION:
new_from = from_type.lower().rstrip("s")
new_from = TYPE_CONVERSION.get(new_from, new_from)
new_to = to_type.lower().rstrip("s")
new_to = TYPE_CONVERSION.get(new_to, new_to)
if new_from not in METRIC_CONVERSION:
raise ValueError(
f"Invalid 'from_type' value: {from_type!r} Supported values are:\n"
+ ", ".join(METRIC_CONVERSION)
f"Invalid 'from_type' value: {from_type!r}.\n"
f"Conversion abbreviations are: {', '.join(METRIC_CONVERSION)}"
)
if to_type not in METRIC_CONVERSION:
if new_to not in METRIC_CONVERSION:
raise ValueError(
f"Invalid 'to_type' value: {to_type!r}. Supported values are:\n"
+ ", ".join(METRIC_CONVERSION)
f"Invalid 'to_type' value: {to_type!r}.\n"
f"Conversion abbreviations are: {', '.join(METRIC_CONVERSION)}"
)
return value * METRIC_CONVERSION[from_type].from_ * METRIC_CONVERSION[to_type].to
return value * METRIC_CONVERSION[new_from].from_ * METRIC_CONVERSION[new_to].to
if __name__ == "__main__":