Ранее я уже упоминал о другой фишке из ˍˍfutureˍˍ , это оператор деления.
from __future__ import division
Суть проста. Раньше сложность типа данных результата поределялась типом самого сложного операнда.
Например:
int/int => int
int/float => float
В первом случае оба операнда int, значит и результат будет int. Во втором float более сложный тип, поэтому результат будет float.
Если нам требуется получить дробное значение при делении двух int то приходилось форсированно один из операндов конверировать в float.
12/float(5) => float
Но с новой "философией" это не требуется. В Python3 "floor division" заменили на "true division" а старый способ теперь работает через оператор "//".
>>> 3/2
1.5
>>> 3//2
1
То есть теперь деление int на int даёт float если результат не целое число.
В классах теперь доступны методы __floordiv__() и __truediv__() для определения поведения с этими операторами.
Данный переход описан в PEP238.
#pep#2to3#basic
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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