title: Calculate logarithm in python
body: <p>I am wondering why the result of <code>log base 10 (1.5)</code> in python = 0.405465108108 while the real answer = 0.176091259.</p>
  
  <p>This is the code that I wrote:</p>
  
  <pre><code>import math
  print math.log(1.5)
  </code></pre>
  
  <p>Can someone tell how to solve this issue?</p>