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https://github.com/Electric-Special/ha-core.git
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2c7e895105
* Climate: more consistent units * Prevent unnecessary conversion in entity component * int -> round * Disable Google tests because they connect to the internet * Remove default conversion rounding F->C * Add rounding of temp to weather comp * Fix equality * Maintain precision when converting temp in entity * Revert "Disable Google tests because they connect to the internet" This reverts commit b60485dc19bb97f4a502854d5ff2297330df0b40.
35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
"""Temperature util functions."""
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from homeassistant.const import (
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TEMP_CELSIUS,
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TEMP_FAHRENHEIT,
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UNIT_NOT_RECOGNIZED_TEMPLATE,
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TEMPERATURE
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)
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def fahrenheit_to_celsius(fahrenheit: float) -> float:
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"""Convert a Fahrenheit temperature to Celsius."""
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return (fahrenheit - 32.0) / 1.8
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def celsius_to_fahrenheit(celsius: float) -> float:
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"""Convert a Celsius temperature to Fahrenheit."""
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return celsius * 1.8 + 32.0
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def convert(temperature: float, from_unit: str, to_unit: str) -> float:
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"""Convert a temperature from one unit to another."""
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if from_unit not in (TEMP_CELSIUS, TEMP_FAHRENHEIT):
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raise ValueError(UNIT_NOT_RECOGNIZED_TEMPLATE.format(from_unit,
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TEMPERATURE))
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if to_unit not in (TEMP_CELSIUS, TEMP_FAHRENHEIT):
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raise ValueError(UNIT_NOT_RECOGNIZED_TEMPLATE.format(to_unit,
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TEMPERATURE))
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if from_unit == to_unit:
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return temperature
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elif from_unit == TEMP_CELSIUS:
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return celsius_to_fahrenheit(temperature)
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else:
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return fahrenheit_to_celsius(temperature)
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