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View Code? Open in Web Editor NEWA cross-platform Python interface for the Aranet4 CO₂ meter
License: MIT License
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pyaranet4 --history Invocation Raises ValueError Exception
Issue Summary:
pyaranet4 --history raises ValueError exception.
See Issue Details section below for more information.
Python Version Details:
% python -VV
Python 3.10.8 (main, Oct 13 2022, 09:48:40) [Clang 14.0.0 (clang-1400.0.29.102)]Aranet4 Sensor Details:
Firmware: v1.2.0
Smart Home Integration: enabled
Issue Details:
I am receiving a ValueError runtime exception when attempting to pull back history from my Aranet4:
% pyaranet4 --history
Traceback (most recent call last):
File "/<redacted>/pyaranet4/.venv/bin/pyaranet4", line 8, in <module>
sys.exit(main())
File "/<redacted>/pyaranet4/.venv/lib/python3.10/site-packages/pyaranet4/__main__.py", line 56, in main
collect_data(a4, args, sensors)
File "/<redacted>/pyaranet4/.venv/lib/python3.10/site-packages/pyaranet4/__main__.py", line 114, in collect_data
history = a4.get_history(sensors)
File "/<redacted>/pyaranet4/.venv/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 219, in get_history
return self.loop.run_until_complete(self._get_history(sensors, start, end))
File "/<redacted>/homebrew/Cellar/[email protected]/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
return future.result()
File "/<redacted>/pyaranet4/.venv/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 410, in _get_history
index_map[max(self._datapoints)] = last_timestamp
ValueError: max() arg is an empty sequence
% I can pull back the most recent measurement without issue using pyaranet4:
% pyaranet4
--------------------------------------
Connected: Aranet4 03263 | v0.4.10
Updated 40 s ago. Intervals: 60 s
5040 total readings
--------------------------------------
CO2: 846 ppm
Temperature: 20.00 C
Humidity: 32 %
Pressure: 980.50 hPa
Battery: 33 %
--------------------------------------But for some reason when I pass the --history flag, I get the ValueError exception. Based on the detail message max() arg is an empty sequence, I wonder if self._datapoints isn't getting set for some reason.
Desired Resolution:
Can you provide any guidance on why I might be receiving this error, and how to resolve it?
Please let me know if I can provide any additional details!
Failed to read temperature, humidity, co2, pressure
pyaranet4 --history works as expected, but pyaranet4 produces the error:
--------------------------------------
Connected: Aranet4 1BAE8 | v0.4.14
Updated 20 s ago. Intervals: 60 s
249 total readings
--------------------------------------
Traceback (most recent call last):
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 477, in _read_value
value = await self._client.read_gatt_char(uuid)
File "/home/ighor/.local/lib/python3.10/site-packages/bleak/__init__.py", line 571, in read_gatt_char
return await self._backend.read_gatt_char(char_specifier, **kwargs)
File "/home/ighor/.local/lib/python3.10/site-packages/bleak/backends/bluezdbus/client.py", line 679, in read_gatt_char
assert_reply(reply)
File "/home/ighor/.local/lib/python3.10/site-packages/bleak/backends/bluezdbus/utils.py", line 20, in assert_reply
raise BleakDBusError(reply.error_name, reply.body)
bleak.exc.BleakDBusError: [org.bluez.Error.NotPermitted] Read not permitted
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/ighor/.local/bin/pyaranet4", line 8, in <module>
sys.exit(main())
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/__main__.py", line 61, in main
basic_overview(a4)
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/__main__.py", line 76, in basic_overview
print("CO2: {:d} ppm".format(a4.current_readings.co2))
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 155, in current_readings
return self._get_readings(simple=False)
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 284, in _get_readings
data = self.read_from_uuid(uuid)
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 230, in read_from_uuid
value = self.loop.run_until_complete(self._read_value(uuid))
File "/usr/lib/python3.10/asyncio/base_events.py", line 646, in run_until_complete
return future.result()
File "/home/ighor/.local/lib/python3.10/site-packages/pyaranet4/pyaranet4.py", line 479, in _read_value
raise Aranet4UnpairedException("Error reading from device. Check if it is properly paired.")
pyaranet4.exceptions.Aranet4UnpairedException: Error reading from device. Check if it is properly paired.
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