#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Exacte decimale optelling met het Decimal-type.
Hoofdstuk: 29 — Decimalen in Python & C
"""
from decimal import Decimal, getcontext
getcontext().prec = 28
x = Decimal("0.1")
y = Decimal("0.2")
z = x + y
print("x =", x)
print("y =", y)
print("x + y =", z)
print("Is x + y exact 0.3?", z == Decimal("0.3"))