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Questions tagged [slots]

`__slots__` is a python language feature to reduce size of object instances by dropping the builtin dictionary every python instance normally features in order to support dynamic assignment of attributes and replacing it with a fixed set of attributes (the 'slots').

__slots__ is a python language feature to reduce size of object instances by dropping the builtin dictionary every python instance normally features in order to support dynamic assignment of attributes and replacing it with a fixed set of attributes (the 'slots'). See: https://docs.python.org/2/reference/datamodel.html#slots

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Cant get PyQt5Designer LCD box to receive display signal and update display

I am super confused after searching and searching for the solution to how to have a thread send an integer value to my "LCD" display in PyQT. Below is my code that takes the values of an ADC and takes a adafruit GPS module to gather some data. I…
Raul Caballero
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Qt5: Though connected, Signal emmited but Slot not being called

So I have a Qt class MyQtClass, and a QOject inherited class Sender. I want to access the Ui from the Senderclass (Which by the way only consists static members), so I set up the static Sender& instance(), static void emitSignal()functions and the…
user9910916
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Pixi JS Slot Game count specific sprite

So i am using a demo that pixi js made them self. http://pixijs.io/examples/#/demos/slots-demo.js and i can't figure out or find anywhere on the web how i count a sprite as an example: https://i.stack.imgur.com/EunhC.png i want to count the…
TehGaz7
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SafeNet ProtectServer External 2 HSM

I could not find the maximum number of slots that we can create on SafeNet ProtectServer External 2 hardware security module If anyone know that please help!
smart trust
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What isolation level exist between Azure deployment slots?

It would like to know how Azure handles isolation for Web App deployment slots? For example if I have production and staging deployment slots on the same instance (a pattern that I've seen recommended many times in articles), what happens if my …
user2695105
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Why can't slots be used alongside decorators to enforce encapsulation in Python?

I've read that there is no strict enforcement of Encapsulation in Python. slots is generally used for purposes of faster attribute access and memory savings as reflected in here. However can encapsulation be enforced strictly with the usage of slots…
P. Sai Prasanth
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SQL - Find free slots for booking system

I got a simple mysql table for already booked rooms. Here the sql structure: CREATE TABLE Rooms ( `ID` int, `Description` varchar(50) ); INSERT INTO Rooms values (123, 'Room in Frankfurt'), (234, 'Room in Wiesbaden'), (245, 'Room in…
endcoreCL
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QT C++ How to call lambda one?

I want to call some lambda function A once, and all the next time I want to call the lambda function B. For example: connect(someButton, &QPushButton::clicked, this, [=]() { QMessageBox::information(this, "Function A", "This is FIRST…
Joe
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Python 3 compatible slots

I am trying to go from Python2 to Python3. So the first step is to program forward compatible. Thus I use the from __future__ and the from builtins imports. However this breaks slots. While class _Test(object): __slots__ = ('a', ) test =…
DerWeh
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PyQt5 QSlider value is always 0

I'm having an issue with PyQt5 QSlider. I have multiple QSliders in a Widget. Now I want to update a corresponding QLabel when the handle of the slider is released. Therefore I connected all sliders inside a for loop, where I pass the slider and the…
MrMarlin
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Error when adding buttons, No such slot exists even though it is there

This is the full error i am getting, I do have the moc file in my build folder I am trying to debug and this message apears Debugging starts QObject::connect: No such slot MainWindow::numberClicked(QString buttonInput) in…
rednefed
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QSlider postion changes only when minimazing app

I am using QSlider element in my app as a toogle switch. I took this project over from a colleage of mine who left. So far so good, except, that this switch has a black label around it. I can't really change the style and rework everything so, I am…
Them4
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Why does this mypy, slots, and abstract class hack work?

I've got a relatively big Python project and in an effort to minimise debugging time I'm trying to emulate a few aspects of a lower-level language. Specifically Ability to type cast (Static Typing) Prevent dynamic attribute addition to classes.…
m4p85r
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How to derive from int/str with __slots__?

I have a need to derive a class from int/str that does pretty-printing, however the printing must be parameterised, and therefore would require a slot. This hits a Python limitation that classes derived from int/str cannot have non-empty slots. Can…
ArekBulski
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Python __slots__ metaclass issue

I'm currently implementing slotted metaclasses using type(): type(i, (), {'__slots__': tuple(data) I would of course ideally keep with slots as I have a usecase that would benefit from their smaller memory footprint and improved access speed. when…
SerialDev
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