-1

I'm doing a simple addition "11111.66+1111.38+60000" using python. Why python gives me "72223.04000000001" rather than "72223.04"?

I've tried python2.7.12/Python3.5.2 in Linux and Python3.7.2 in Windows.

11111.66+1111.38+60000

Charing Lau
  • 52
  • 4

1 Answers1

0

This is a run-of-the-mill floating point coding issue, it's not an error. It just reflects the way numbers are represented in the belly of the machine.

Try this: 

from decimal import Decimal
float(Decimal(11111.66)+Decimal(1111.38)+Decimal(60000))

Where the decimal library irons out these little squiggles.

More here: https://docs.python.org/2/tutorial/floatingpoint.html

Yishai E
  • 481
  • 3
  • 9