title: Discrepancy between the results of inbuild sum and pd.Series.sum function
body: <p>This is the Series which I am using,</p>
  <p><a href="https://paste.ubuntu.com/p/Wd3czXj9Fc/" rel="nofollow noreferrer">https://paste.ubuntu.com/p/Wd3czXj9Fc/</a></p>
  <pre><code>&gt;&gt;&gt; sum(series)
  185048.7799999991
  &gt;&gt;&gt; series.sum()
  185048.78000000003
  </code></pre>
  <p>Why is there a difference between those values? Although there's a floating point error associated with both the values but that shouldn't be the reason for this difference.</p>