How To Convert Int To Float In Python?

Does anyone know how to convert int to float. For some reason, it keeps on printing 0. I want it to print a specific decimal. sum = 144 women_onboard = 314 proportion_womenclass3_s

Solution 1:

To convert an integer to a float in Python you can use the following:

float_version = float(int_version)

The reason you are getting 0 is that Python 2 returns an integer if the mathematical operation (here a division) is between two integers. So while the division of 144 by 314 is 0.45~~~, Python converts this to integer and returns just the 0 by eliminating all numbers after the decimal point.

Alternatively you can convert one of the numbers in any operation to a float since an operation between a float and an integer would return a float. In your case you could write float(144)/314 or 144/float(314). Another, less generic code, is to say 144.0/314. Here 144.0 is a float so it’s the same thing.

Solution 2:

Other than John's answer, you could also make one of the variable float, and the result will yield float.

>>>144 / 314.0
0.4585987261146497

Solution 3:

In Python 3 this is the default behavior, but if you aren't using that you can import division like so:

>>>from __future__ import division>>>144/314
0.4585987261146497

Alternatively you can cast one of the variables to a float when doing your division which will do the same thing

sum = 144women_onboard = 314proportion_womenclass3_survived = sum / float(np.size(women_onboard))

Solution 4:

You can just multiply 1.0

>>>1.0*144/314
0.4585987261146497

Solution 5:

You can literally convert it into float using:

float_value = float(integer_value)

Likewise, you can convert an integer back to float datatype with:

integer_value = int(float_value)

Hope it helped. I advice you to read "Build-In Functions of Python" at this link: https://docs.python.org/2/library/functions.html