В фреймворке PyQt (и PySide тоже) часто встречается настройка чего-либо с помощью так называемых флагов.
widget.setWindowFlags(Qt.Window)
Взаимодействие нескольких флагов делается с помощью бинарных (или побитовых) операторов.
Несколько флагов можно указать с помощью оператора "|"
list_item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled)
исключить флаг из уже имеющегося набора можно так
list_item.setFlags(list_item.flags() ^ Qt.ItemIsEnabled)
Добавить новый флаг к имеющимся можно так
list_item.setFlags(list_item.flags() | Qt.ItemIsEnabled)
А проверка наличия делается так
is_enabled = item.flags() & Qt.ItemIsEnabled > 0
Почему именно так? Всё дело в том как именно работают побитовые операторы. Но об этом в следующем посте.
#qt
The Tuskegee Study was a government experiment from 1932 to 1972. It involved Black men with syphilis who were told they were getting free health care. But doctors did not give them medicine to cure the disease. They just watched the sickness get worse. The men did not know the truth and were not allowed to leave the study. This caused a lot of harm and suffering.
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HeLa cells – taken from Henrietta Lacks in 1951 without her consent – became the first immortal human cell line.
They helped develop the polio vaccine, cancer treatments, and gene mapping, revolutionizing medicine. 7
Her story highlights major ethical questions in science and patient rights.
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Active euthanasia is when a doctor directly ends a patient’s life, like using a lethal injection. Passive euthanasia is when doctors stop treatment or life support, letting the person die naturally.
Passive euthanasia is legal in many countries. Active euthanasia is only legal in a few, like the Netherlands, Belgium, Luxembourg, Canada, Spain, Portugal, Colombia, Ecuador, and New Zealand. Some U.S. states allow assisted dying, but not active euthanasia.
Many people find passive euthanasia more acceptable. Active euthanasia is more controversial. People worry about abuse or moral problems. Support often depends on whether a person is terminally ill or in unbearable suffering.
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