Python increment operator

Question

So, i'm trying to increment a variable by 0.01

On the 6th iteration, the total seems to be getting incremented by more than 0.01

Can anybody please explain what's going on?

I'm trying to loop through minutes and hours, adding the degrees that the hour and minute hand will move forward.

My screenshot of the issue - https://snipboard.io/NnUhua.jpg — Khwaja Muhammad, Mar 11 '23 at 05:36

score 0 · Answer 1 · answered Mar 11 '23 at 05:42

0

That is because how computers store floating point values in memory. Floating point values are converted to binary.

refer to this documentation to know how floating point numbers are stored in python: https://docs.python.org/3/tutorial/floatingpoint.html

To avoid this issue, you can use a different approach to loop through the values, such as using integers and dividing by 10. For example:

a = 0
while(a < 100):
    print(a/10)
    a += 1

answered Mar 11 '23 at 05:42

Harsh Dobariya

my result is the same... I'm doing this on Google Colab notebook – Khwaja Muhammad Mar 14 '23 at 14:36
can you specify the version of the python interpreter? – Harsh Dobariya Mar 14 '23 at 14:52
Python 3.9.16 - checked on notebook with !python --version – Khwaja Muhammad Mar 15 '23 at 15:09

Roy BA · Answer 2 · 2023-03-11T05:44:53.810

-1

is it occurs only on the 6'th iteration or on every iteration prior to the 6'th? try this out:

   for i in range(x): # x is the number of iterations
    num += 0.01

edited Mar 11 '23 at 05:44

answered Mar 11 '23 at 05:42

Roy BA

Repeating after 6th, excluding 1 value after irregular intervals – Khwaja Muhammad Mar 14 '23 at 14:36

2 Answers2