I have two integer values a
and b
, but I need their ratio in floating point. I know that a < b
and I want to calculate a / b
, so if I use integer division I'll always get 0 with a remainder of a
.
How can I force c
to be a floating point number in Python 2 in the following?
c = a / b
Floating point error means that there is a division by a zero value in your code. It can be a variable, input, or a function in use that returns zero value. You need to identify this variable/input/function and make sure that the returned value is not zero.
To divide float values in Python, use the / operator. The Division operator / takes two parameters and returns the float division. Float division produces a floating-point conjecture of the result of a division. If you are working with Python 3 and you need to perform a float division, then use the division operator.
First, use division or long division ignoring the decimal point. Next, put the decimal point in the same spot as the dividend (the number being divided). Note that the dividend is the number being divided so it goes into our division box and the divisor is the number doing the dividing.
Adding subtracting or multiplying two ints always yields an int result, but division is different. The result of division is always a float value, even if the division comes out even.
In Python 2, division of two ints produces an int. In Python 3, it produces a float. We can get the new behaviour by importing from __future__
.
>>> from __future__ import division >>> a = 4 >>> b = 6 >>> c = a / b >>> c 0.66666666666666663
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