title: How to fix an expected an indented block error?
body: <p>I was trying to create a BMI calculator in Python, but when I run the program, it says: 'IndentationError: expected an indented block'. It says that the error is in line 7, but what did I wrong? I'm using Python 3.5.1</p>
  
  <pre><code>print ('Give your weight in kg: ')
  weight_kg = float(raw_input())
  print ('Give your length in meters: ')
  length_meters = float(raw_input())
  bmi = weight_kg / (length_meters * length_meters)
  if bmi &lt;= 18.5:
  print ('Your BMI is'), bmi, ('what means that you have got underweight')
  elif bmi &gt; 18.5 and bmi &lt;= 25:
  print ('Your BMI is'), bmi, ('what means that you have got a normal weight')
  elif bmi &gt; 25 and bmi &lt; 30:
  print ('Your BMI is'), bmi, 'what means that you have got overweight')
  elif bmi &gt;= 30:
  print ('Your BMI is'), bmi, ('what means that you have got obese')
  </code></pre>