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backends/service: normalize UUIDs in get_characteristic() #1551

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merged 1 commit into from
Apr 29, 2024
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backends/service: normalize UUIDs in get_characteristic() #1551

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1 change: 1 addition & 0 deletions CHANGELOG.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ Fixed
* Fixed rare unhandled exception when scanning on macOS when using ``use_bdaddr``. Fixes #1523.
* Fixed scanning silently failing on Windows when Bluetooth is off. Fixes #1535.
* Fixed using wrong value for ``tx_power`` in Android backend. Fixes #1532.
* Fixed 4-character UUIDs not working on ``BleakClient.*_gatt_char`` methods. Fixes #1498.

`0.21.1`_ (2023-09-08)
======================
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4 changes: 3 additions & 1 deletion bleak/backends/service.py
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Expand Up @@ -176,10 +176,12 @@ def get_characteristic(
if isinstance(specifier, int):
return self.characteristics.get(specifier)

uuid = normalize_uuid_str(str(specifier))

# Assume uuid usage.
x = list(
filter(
lambda x: x.uuid == str(specifier).lower(),
lambda x: x.uuid == uuid,
self.characteristics.values(),
)
)
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