Taurus eval using python variable defined in the current python module

[almarass]

Hi,
I tried to visualize in a TaurusLabel the content of a variable defined in the current python module, but without success.
The code is as follows:

import sys
from taurus.external.qt import Qt
from taurus.qt.qtgui.application import TaurusApplication

app = TaurusApplication(sys.argv)
panel = Qt.QWidget()
layout = Qt.QHBoxLayout()
panel.setLayout(layout)

s = 'MAINTENANCE'

from taurus.qt.qtgui.display import TaurusLabel
w = TaurusLabel()
layout.addWidget(w)

w.model = 'eval:a=s1'
#w.model = 'eval:a=@self.*/s1'

panel.show()
sys.exit(app.exec_())

The commented instruction was another attempt.
Is it somehow possible?

thanks

[teresanunez]

Hi,       do you have any reason for not using: w.setText(s) ?, or you didn't know about that possibility?. This will work.                Regards,                               Teresa

…

On 04/27/18 10:21, almarass wrote: Hi, I tried to visualize in a TaurusLabel the content of a variable defined in the current python module, but without success. The code is as follows: import sys from taurus.external.qt import Qt from taurus.qt.qtgui.application import TaurusApplication app = TaurusApplication(sys.argv) panel = Qt.QWidget() layout = Qt.QHBoxLayout() panel.setLayout(layout) s = 'MAINTENANCE' from taurus.qt.qtgui.display import TaurusLabel w = TaurusLabel() layout.addWidget(w) w.model = 'eval:a=s1' #w.model = ***@***.*** <https://github.com/self>.*/s1' panel.show() sys.exit(app.exec_()) The commented instruction was another attempt. Is it somehow possible? thanks — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#745>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFSqiOwoAdZx11jEhNAmSnmcx9_ElraSks5tstT2gaJpZM4Tp916>.

[almarass]

Hi, the local variable has to be written via PyTango reading the string from a DevEnum type attribute in order to bypass the problem that Taurus is not ready to manage DevEnum type. Could you suggest anything else? thanks, Alex 2018-04-27 10:34 GMT+02:00 teresanunez <notifications@github.com>:

…

Hi, do you have any reason for not using: w.setText(s) ?, or you didn't know about that possibility?. This will work. Regards, Teresa On 04/27/18 10:21, almarass wrote: > > Hi, > I tried to visualize in a TaurusLabel the content of a variable > defined in the current python module, but without success. > The code is as follows: > > import sys > from taurus.external.qt import Qt > from taurus.qt.qtgui.application import TaurusApplication > > app = TaurusApplication(sys.argv) > panel = Qt.QWidget() > layout = Qt.QHBoxLayout() > panel.setLayout(layout) > > s = 'MAINTENANCE' > > from taurus.qt.qtgui.display import TaurusLabel > w = TaurusLabel() > layout.addWidget(w) > > w.model = 'eval:a=s1' > #w.model = ***@***.*** <https://github.com/self>.*/s1' > > panel.show() > sys.exit(app.exec_()) > > The commented instruction was another attempt. > Is it somehow possible? > > thanks > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub > <#745>, or mute the thread > <https://github.com/notifications/unsubscribe-auth/ AFSqiOwoAdZx11jEhNAmSnmcx9_ElraSks5tstT2gaJpZM4Tp916>. > — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#745 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXZERwdSoYZFljJorEbQzqMPvvgkwPcFks5tstgAgaJpZM4Tp916> .

[cmft]

Hi @almarass ,
Yes, It can be done. Be aware of the PyTango limitation

See the first example. If you need to do something more fancy, check the documentation

Some examples:

taurusform 'eval:foo="hello";foo'
taurusform 'eval:@random.*/foo=choice("abcd");foo'
taurusform 'eval:string="--> "+ {sys/tg_test/1/string_scalar};string'

[almarass]

Hi, in the first example foo is explicitly given a value in the eval instruction. In my case I want to use a variable which has been previously defined in the current python module, like: foo = "something" taurusform 'eval:a=foo;a' Is it possible? thanks 2018-04-27 10:57 GMT+02:00 Carlos Falcon <notifications@github.com>:

…

Hi @almarass <https://github.com/almarass> , Yes, It can be done. Be aware of the PyTango limitation <tango-controls/pytango#188> See the first example. If you need to do something more fancy, check the documentation <http://taurus-scada.org/devel/api/taurus/core/evaluation.html> Some examples: taurusform 'eval:foo="hello";foo' taurusform ***@***.****/foo=choice("abcd");foo' taurusform 'eval:string="--> "+ {sys/tg_test/1/string_scalar};string' — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#745 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXZER773atGmRKnJfOaYr9GWD6RHlL_9ks5tst1ugaJpZM4Tp916> .

[cmft]

Hi @almarass,
I used taurusform to avoid writing extra code. In your example should be like this:

w.model = 'eval:a="{0}";a'.format(s)

[cpascual]

I am not sure, but I think that the solution from #745 (comment) is not what @almarass is after, because it is static (the model is set to a string with the value of the variable at the moment of setting the model).
I understand that what @almarass wants is to be able to update the value of s and see the display updated.

If the module where the s variable is stored is called foo.py and it is in the python path, the following should work:

 w.model = 'eval:@foo.*/s'

BUT: when I tried I found that it does not work if used from the same module foo (it seems to get stuck). As a workaround, if you can use 2 modules:

• main.py

import sys
from taurus.qt.qtgui.application import TaurusApplication
from taurus.qt.qtgui.display import TaurusLabel

app = TaurusApplication(sys.argv)

w = TaurusLabel()
w.model = 'eval:@foo.*/s'

w.show()
sys.exit(app.exec_())

• foo.py (note that this file must be in the python path!!!)

s = "WHATEVER"

[almarass]

In order to show the value of an enum attribute (dishmode), I tried the following: w = TaurusLabel() layout.addWidget(w) w.model = 'eval:a="{0}";a'.format(power_supply.attribute_query('dishMode').enum_labels[power_supply.read_attribute('dishMode').value]) panel.show() given that: power_supply = PyTango.DeviceProxy("// 151.97.17.82:10000/mid_dish_0001/elt/master") It seems to work, but when the value of dishmode is changed, it does not show the new value. Is there any way to update it? thanks 2018-04-30 11:51 GMT+02:00 Carlos Pascual <notifications@github.com>:

…

I am not sure, but I think that the solution from #745 (comment) <#745 (comment)> is not what @almarass <https://github.com/almarass> is after, because it is static (the model is set to a string with the value of the variable *at the moment of setting the model*). I understand that what @almarass <https://github.com/almarass> wants is to be able to update the value of s and see the display updated. If the module where the s variable is stored is called foo.py *and it is in the python path*, the following *should* work: w.model = ***@***.****/s' *BUT*: when I tried I found that it does not work if do it from the *same* module foo (it seems to get stuck). As a workaround, if you can use 2 modules: - main.py import sysfrom taurus.qt.qtgui.application import TaurusApplicationfrom taurus.qt.qtgui.display import TaurusLabel app = TaurusApplication(sys.argv) w = TaurusLabel() w.model = ***@***.****/s' w.show() sys.exit(app.exec_()) - foo.py (note that this file must be in the python path!!!) s = "WHATEVER" — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#745 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AXZER34rqG6rYarA4rCZlQnqyWRwRdrkks5ttt6WgaJpZM4Tp916> .

[cpascual]

It seems to work, but when the value of dishmode is changed, it does not show the new value.

This is because your code is essentially following the recipe from #745 (comment).

Have a look at the alternative that I propose in #745 (comment)

[almarass]

I followed the alternative proposed in #745 (comment), but it seems to behave in the same way (it does not update)