This is an update to my previous post.
Here is an abstract of the code for easier reading:
class B(object):
def __init__(self):
self.a1 = A()
self.a1.signal1.connect(self.handler) # Fails in PyQt, succeeds
in PySide
def handler(self):
pass
class A (Mixin, SubclassOfQObject):
def __init__(self):
super().__init__()
class Mixin(object):
signal1 = Signal()
def __init__(self):
super().__init__()
Again, AFAIK this works in PySide, but not in PyQt.
The MRO of a1, an instance of class A, is (Mixin, SubclassOfQObject,
QObject, object).
And Mixin.__init__ calls super, which calls QObject.__init__ for
instance a1,
so the signal instance should be bound by the time its connect method is
called?
I found that a workaround is to eliminate the mixin:
class A (SubclassOfQObject):
signal1 = Signal()
def __init__(self):
super().__init__()
... methods that were in Mixin ...
I just don't understand why. Should I submit an executable test case?
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