Question

I am trying to write some variables that convert inches and pounds to centimeters and kilos. I’m trying to work out the math in Python and having some trouble.

After struggling a while, I managed to do this in Python:

inches = 19
centimeters = inches * 2.54
print "%r inches equals %r centimeters." % (inches, centimeters)


pounds = 180
kilos = pounds /2.2
print "%r pounds equals %r kilos." % (pounds, kilos)

While the inch to cm calculation works great, I get an incorrect result on pounds to kilos (e.g. wolframalpha says it should be 81.65kg.)

What am I doing wrong and how can I fix this in order to get the right result?

Thanks!

Answer 1

1 pound = 0.45359237 kilograms

So your code has to be:

pounds = 180
kilos = pounds * 0.45359237
print "%r pounds equals %r kilos." % (pounds, kilos)

And you get the correct result.