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Ensure CompositeDevice._order has deterministic behaviour

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... by sorting the kwargs, if no _order was specifically supplied.
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Andrew Scheller
2016-04-07 17:50:00 +01:00
parent 4f7e1f003e
commit 53dc1750c1
1 changed files with 1 additions and 1 deletions
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2
gpiozero/devices.py
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@@ -261,7 +261,7 @@ class CompositeDevice(Device):
self._tuple = None self._tuple = None
self._order = kwargs.pop('_order', None) self._order = kwargs.pop('_order', None)
if self._order is None: if self._order is None:
self._order = kwargs.keys() self._order = sorted(kwargs.keys())
self._order = tuple(self._order) self._order = tuple(self._order)
for missing_name in set(kwargs.keys()) - set(self._order): for missing_name in set(kwargs.keys()) - set(self._order):
raise CompositeDeviceBadOrder('%s missing from _order' % missing_name) raise CompositeDeviceBadOrder('%s missing from _order' % missing_name)