title: Understand exponent in python quantize method
body: <p>I am not a math guy, so I am struggling to understand the difference below:</p>
  
  <pre><code>&gt;&gt;&gt; Decimal(1.144).quantize(Decimal('0.01'))
  Decimal('1.14')
  &gt;&gt;&gt; Decimal(1.144).quantize(Decimal('0.00'))
  Decimal('1.14')
  &gt;&gt;&gt; Decimal(1.145).quantize(Decimal('0.00'))
  Decimal('1.15')
  &gt;&gt;&gt; Decimal(1.145).quantize(Decimal('0.01'))
  Decimal('1.15')
  </code></pre>
  
  <p>So what's the difference having <code>0.00</code> vs <code>0.01</code> in exponent value?</p>