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
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If you're a UPSC student and thinking about a Plan B, this could be the perfect opportunity for you. The IISPPR Field Research Fellowship is a one-month, fully online program that allows you to explore the world of qualitative research methods. It's a great way to test your interests and see if research could be your Plan B. The program runs from September 1 to 30, 2024, and you won't need to travel for fieldwork—everything can be done in your own neighborhood. With limited seats, this is a chance to explore new opportunities without a long-term commitment. Apply by August 15
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If you're a UPSC student and thinking about a Plan B, this could be the perfect opportunity for you. The IISPPR Field Research Fellowship is a one-month, fully online program that allows you to explore the world of qualitative research methods. It's a great way to test your interests and see if research could be your Plan B. The program runs from September 1 to 30, 2024, and you won't need to travel for fieldwork—everything can be done in your own neighborhood. With limited seats, this is a chance to explore new opportunities without a long-term commitment. Apply by August 15
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