def to_meters(length, unit):
"""
Convert the given length to meters.
"""
length = int(length)
if length < 0:
raise ValueError("Length must be a positive integer")
valid_units = CableLengthUnitChoices.values()
if unit not in valid_units:
raise ValueError(
"Unknown unit {}. Must be one of the following: {}".format(
unit, ', '.join(valid_units)))
if unit == CableLengthUnitChoices.UNIT_KILOMETER:
return length * 1000
if unit == CableLengthUnitChoices.UNIT_METER:
return length
if unit == CableLengthUnitChoices.UNIT_CENTIMETER:
return length / 100
if unit == CableLengthUnitChoices.UNIT_MILE:
return length * 1609.344
if unit == CableLengthUnitChoices.UNIT_FOOT:
return length * 0.3048
if unit == CableLengthUnitChoices.UNIT_INCH:
return length * 0.3048 * 12
raise ValueError(
f"Unknown unit {unit}. Must be 'km', 'm', 'cm', 'mi', 'ft', or 'in'.")
def to_meters(length, unit):
"""
Convert the given length to meters.
"""
try:
if length < 0:
raise ValueError("Length must be a positive number")
except TypeError:
raise TypeError(f"Invalid value '{length}' for length (must be a number)")
valid_units = CableLengthUnitChoices.values()
if unit not in valid_units:
raise ValueError(f"Unknown unit {unit}. Must be one of the following: {', '.join(valid_units)}")
if unit == CableLengthUnitChoices.UNIT_KILOMETER:
return length * 1000
if unit == CableLengthUnitChoices.UNIT_METER:
return length
if unit == CableLengthUnitChoices.UNIT_CENTIMETER:
return length / 100
if unit == CableLengthUnitChoices.UNIT_MILE:
return length * Decimal(1609.344)
if unit == CableLengthUnitChoices.UNIT_FOOT:
return length * Decimal(0.3048)
if unit == CableLengthUnitChoices.UNIT_INCH:
return length * Decimal(0.3048) * 12
raise ValueError(f"Unknown unit {unit}. Must be 'km', 'm', 'cm', 'mi', 'ft', or 'in'.")