When I type regular division, it defaults to floor. Why is it doing this? How do I change it? Will I have to change it every time?
ex:
>>>97/20
4
>>>97//20
4
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97/20.0 will solve the problem – Halil İbrahim Yıldırım May 02 '20 at 22:23
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1You almost certainly should be using Python 3 instead of Python 2, btw – juanpa.arrivillaga May 02 '20 at 22:52
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Does this answer your question? [What is the difference between '/' and '//' when used for division?](https://stackoverflow.com/questions/183853/what-is-the-difference-between-and-when-used-for-division) – AMC May 03 '20 at 00:27
3 Answers
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That's because both numbers are integers, and in Python 2 it works that way: dividing two integers uses floor division. You could see a difference if you did this:
>>>97.0/20.0
4.85
>>>97.0//20.0
4.0
Alejandro De Cicco
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https://stackoverflow.com/questions/183853/what-is-the-difference-between-and-when-used-for-division – AMC May 03 '20 at 00:27
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It seems like you are using python 2.x, this is not the problem with python 3.x
If you want to get precise result use 97/20.0.
Adding 20.0 will do the type casting of the result to float
Anmol Batra
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https://stackoverflow.com/questions/183853/what-is-the-difference-between-and-when-used-for-division – AMC May 03 '20 at 00:27
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You’re using Python2. The behaviour when dividing integers changed to float division by default in Python3. So if you want float division by default for integers use Python3 or place
from __future__ import division
at the top of your code to use that feature.
In fact, there are many reasons why it’s probably better for you start using Python3 right away.
innisfree
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https://stackoverflow.com/questions/183853/what-is-the-difference-between-and-when-used-for-division – AMC May 03 '20 at 00:27