What defines floating point precision in python?

Question

I learnt of the \"exactly equal to\" operator in Erlang, which compares not only values, but also data types of numbers, and I was curious about how things work in Python an

Answer 1

Please check with the Python documentation:

http://docs.python.org/tutorial/floatingpoint.html

Answer 2

It's a peril of using floating-point numbers.

If you need precision at this deep a level, use the Decimal type.

More here: http://docs.python.org/library/decimal.html