#686 Device property substitution for a multi-device server

[Vincent Michel]

Using the new-style Tango device API, I ran into an unexpected behaviour related to the device properties for a multi-device server.

In order to reproduce this bug:

• Use this python code:

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  #!/usr/bin/python from PyTango.server import Device, DeviceMeta, attribute, from PyTango.server import device_property, run class TestDevice(Device): __metaclass__ = DeviceMeta TestProperty = device_property(dtype=str) testAttribute = attribute(dtype=str) def init_device(self): self.get_device_properties() def read_testAttribute(self): return self.TestProperty if __name__ == "__main__": run((TestDevice,))

• Run a server with two different devices (and two different TestProperty values)

• Read testAttribute for both devices.

• Notice that one of the devices is using the property of the other

PS: Good job on that high level API anyway! Feels good to reduce Tango DS code by half, it looks more like actual Python now ;)

[Tiago Coutinho]

Bug confirmed.
Thanks for reporting.

Fix in PyTango SVN trunk since revision #26602
Will become visible in next PyTango 8.1.4