#!/usr/bin/env python3
+# © Copyright 2021-2022, Scott Gasch
+
"""Code involving querying various smart home thermometers."""
import logging
}
def read_temperature(self, location: str, *, convert_to_fahrenheit=False) -> Optional[float]:
+ """Read the current value of a thermometer (in celsius unless
+ convert_to_fahrenheit is True) and return it. Return None on
+ error.
+
+ >>> registry = ThermometerRegistry()
+ >>> registry.read_temperature('unknown') is None
+ True
+
+ >>> temp = registry.read_temperature('house_computer_closet')
+ >>> temp is None
+ False
+ >>> temp > 0.0
+ True
+
+ """
+
record = self.thermometers.get(location, None)
if record is None:
logger.error(
self.thermometers.keys(),
)
return None
+
url = f'http://{record[0]}/~pi/{record[1]}'
logger.debug('Constructed URL: %s', url)
try:
if www is not None:
www.close()
return temp
+
+
+if __name__ == '__main__':
+ import doctest
+
+ doctest.testmod()